Man I hated that stuff! But I'd gladly take it over the epoxy they seal stuff up with today... hehe and find myself using silicone rtv as potting compound for stuff today!
The godlike amount of work that has gone into this video is probably hard to describe. Congratulations on such a good channel. Enjoyed this longer video a lot :)
Now, that's the proper volt-nut stuff! I love these 5700 series calibrators. Too bad they have high-cost upkeep and now obsoleted for fancy LCD stuff... Dislike must be from somebody trying to buy one of these from epay cheaply... Expected prices after video now +1000% :D My heart still skips a beat watching Marco removing cans off oven hybrids. Memory of cracked unobtainable hybrid under it when cover went tilted still fresh....
Man, your sense of humor is DRY. I'm used to TH-cam presentations where a clown comes out and hits the host with a pie if they make a joke. Keep up the great work!
That kind of humor is not so uncommon in Germany and is probably what makes many people that are not capable of getting it, give them the reputation of "not being funny"
I understand NOTHING in your videos and haven't for some time but every time you post a new video I stop what I am doing because you make it so fun to watch!
Marco, your videos are extraordinarily entertaining. All the puns, technical information, and slapstick are a joy to watch. I don't comment much on TH-cam videos, but this one was just grand. Thank you for taking the time to create it.
I happen to have a set of high quality milli-Ohm shunt resistors for measuring high currents (5A, 25 A, 50A and 100A). They are 1 mOhm, 2 mOhm 4 mOhm and 20 mOhm. Not sure if those could be of any use to you. If so, let me know.
I know compressed air can send shards of molten solder all over the board… But if you pay careful attention as to the direction you’re pointing the compressed air tip… You can remove 99.5% of all solder with only about 35psi. I use an airbrush hose because it is soft and flexible and easy on my wrist, and one of those plastic pistol grip blow gun attachments. The blowgun is angled so it’s very comfortable and easy to access hard to reach places. And even though the blow nozzle hole is only a few millimeters in diameter…I attache a football inflating needle to the tip of the blow gun. So that the air opening is less than a millimeter. This gives me uncompromised control, accuracy, and power but with low pressure. The compressed air is narrowed into a very small stream. Anything over 50 psi and you risk blowing traces off of the board. I stay around 30psi This will remove shit tons more solder than the best hakko solder vacuum, or even the best solder wick. Not only does it remove all this older but it also allows very short heat soaking into the board itself. I use a cheap 40 W iron and I can remove a 16 pin Dip Chip in under 20 seconds. Even in thick multi layer boards. It literally just falls out the other side. So to recap.....no heat going into the board… And all of the solder is removed so it is stress-free. This helps those pesky traces stay where they’re supposed to be. Because even though pulling in prying can loosen traces… It’s not just stress from the component leads that makes the traces the laminate. It’s the heat soaking. Just set the circuitboard down in a shoebox or cardboard box so the splatter doesn’t spread all over your shop. And then check the board carefully under a microscope all over to make sure there are no splatters are shorting out components. (Which on expensive boards I’m sure you are doing anyway.) sometimes I am given the task to restore boards from a few of the local government facilities in my area… Boards that are in machines dating from the 70s and 80s. Boards that are pure unobtanium! Where replacements have never been available and the boards are “priceless“ as tools for these companies or agencies… This is by far the best method to remove 99.5% of the solder quickly and easily. I am nowhere near as advanced as you. But industrial equipment repair /calibration is my specialty. I certainly do not have your understanding of electronics theory. But several years of trial and error I’ve picked up a few things here and there. I love to watch your channel and keep learning!
Many thanks for this tip. How wise. Don't suppose you can also recommend specific attachment(s)? Would a PCL BG405 be suitable? Or perhaps a BGS 3215? I am confused because whether to get 1/4 inch BSPT or 1/8 inch hose diameter... or if it can be metal instead of plastic which is best. If you can let us know? We would really appreciate that thanks.
@@dreamcat4 Glad to help anyway I can. Here is the exact pistol grip blowgun that I use. It is model number MP5143. I’v tried fancy ones and cheap ones… And the more lightweight the better! And Instead of a regular air hose, I use braided nylon airbrush hose. The five dollar harbor freight airbrush hose will be fine. I got lucky and got a brand name Paasche hose. The airbrush hoses are thin and usually only good to about 50 psi. They have a fabric covering and are super soft and flexible almost like silicone test leads. Because with regular regular rubber air hose it’s too heavy and puts too much strain on the wrist. Whether you’re salvaging parts for hours, or removing very delicate parts… Strain on the wrist not only hurts your arm and causes problems… But it also gives less control. I also install a sports ball inflation needle at the end of the blowgun to give extra control and an extremely narrow air jet. I cut a few millimeters off the needle tip so that I have only one hole coming out the end of the needle… Because most of the ball inflating needles have a small side hole which defeats the purpose of desoldering by allowing air to escape. I then shape and polish the end of the needle to a very fine rounded edge working from a file all the way up to a few thousand grit wet sandpaper and even buffing compound. so if I accidentally hit the board I don’t leave big scratches or gashes.
I immediately thought of "Mr. Bean: The Ultimate Disaster Movie" when I saw the cleaning rag moving towards those frail carbon keypad contacts. Poor Whistler's mother.
I absolutely love your videos, you are the one that has brought me to my new job as an "Elektromaschinenbauer" it isn't exactly what you do but it has the right balance between electronics and metalwork for me. Thank you reps! ^^
Круто! +1. Удивительно как для 88 года, такой многофункциональный девайс замутили флюковцы. Автор молодец капитальную работу провел по ремонту и наладке такого серьезного и сложного прибора!
Burning away the problem... in Germany we call it "Freibrennen". When soldering power resistors to a PCB it is better to have a little distance to the PCB for better air flow and keeping the PCB cooler.
As Paul of Mr Carlson's Lab has pointed out (a number of times), there are two different kinds of carbon composition resistors, an Allen-Bradley Hot Molded one with sharp corner ends, and then all the others with porous, rounded end packages. He and I are in full agreement that the Allen-Bradley ones never cause a problem, while all the others sooner or later do. And I would add that their trouble really comes sooner than later. The reason is that the hot molding process gives superior moisture protection. Moreover, their wire attachment is also good. I still keep saving my 1979 Allen-Bradley catalog that states "Allen-Bradley Style RCR resistors not only meet all requirements of MIL-R-39008 but also exceed the S level (best level) of Established Reliability of 0.001 % failure rate per 1000 hours." That tells the story. Except that A-B got out of the business, sorry.
Ah, there it is: another wonderful video in a long time. Had the thing been given to me, I wouldn't have the slightest idea what to do with it. Even if this thing worked right away. And yet I always enjoy watching and being shown that such devices exist and that there is at least one person in the world who knows what to do with them and who treats them well. Biegelehre.
Also, with regards to your component dismantling, I have gotten a TESLA (not the set-on-fire computer-on-wheels Tesla) BM 566A oscilloscope and in the manual for it, the process of replacing parts goes like this: To prevent damage to the boards, if a component is soldered on (which, fun fact, the transistors and chips aren't, they're socketed), snip off the leads as long as you can and solder the new component on the leads.
I am so envious of you! I want these types of equipments too! Guess I'll have to make jokes about the german metrology institute, but considering where I'm from, the germans might occupy us (again)
I used to use the 5700A in a cal lab back in the early 90's, it was one of my favorite pieces of gear, mostly because of the HP bus that let it be controlled remotely and some cal jobs could be done almost fully automatically, just had to change the setup. I don't recall the name of the controller but it had the cal procedures on 5 1/4 floppy disks.
@@droneforfun5384 its a multifunction calibrator used to calibrate voltmeters and multimeters, can output calibrated voltages both ac and dc, resistances and current also ac and dc.
I work in a validation lab where we have two of these - one which failed. If you ever have a chance to acquire the amplifier for this unit, it is an amazing piece of equipment itself - increasing output current to 11A.
I physically flinched at that EEPROM removal clip. Painful. And man, I love your videos. My favourite channel on this page, I'm always looking forward to the next video. Grüße aus dem Badnerland.
You know when as a kid you get bored of your toy until your friend plays with it? Yeah, you just made me love again my Fluke 8502A. Same beautiful modular construction, the boards are not just shielded: they have a plastic, VHS-looking case with a door for access to the test points. Thing of beauty!
26:47 Marco you could make a 5 hour video and not kidding the majority of us would literally watch every second of it. I mean for me they are the perfect videos to watch instead of working on my actual class projects, thanks for the lower gpa ! (p.s. lmao)
Ever seen a Datron 4708? Still one of the best AC calibrators made...which has the unfortunate habit of beeping at you constantly when it is putting out over 100 volts AC.
That weird 26x256 VFD display should be possible to replace with something else.. there are 32x256 vfd's available. Perhaps it could be possible to tap into the serial bus and drive another type of vfd with that data.
I don't know why, even if i don't have a clue what he does in these videos, i always find this astonishing. The world of electrical engineering is so captivating...
Very nice , better then xdev , gloves, proper tools, recapping all electrolyte capacitor, Wonder where you get bending tools from , please send the link for it.
Those AC oscillator, AC control board and AC output design are based on the older 5200A, it has the same setup (I know I had to fix that... a 19 part video series!) the resistance board is based on the 5450A.
Good job Regarding precision resistors Buy the quadtech decade resistor AKA GenRad 1433 Series Decade Resistor Excellent equipment . I have the QUADTECH 1659 RLC digibridge . And with the help of the quadtech / GenRad 1433 Series Decade Resistor You can get any value resistors in accuracy 0.01%
Great video! You're a pro. I was hoping maybe could bend your ear a bit on a calibrator I'm trying to repair. It's a Fluke 5520A. I've checked everything I can thing of and am still getting errors 399 and 309 during the self test and zero. Any help you could offer would be greatly appreciated. Thank you.
Negative resistance (NR) is a property of some electrical circuits and devices in which an increase in voltage across the device's terminals results in a decrease in electric current through it. This is in contrast to an ordinary resistor in which an increase of applied voltage causes a proportional increase in current due to Ohm's law, resulting in a positive resistance. While a positive resistance consumes power from current passing through it, a negative resistance produces power. Under certain conditions it can increase the power of an electrical signal, amplifying it. How a resistor becomes a diode. :D :D
I had one of those old bangers on my workbench at Intel in the Product Development Lab. It served no purpose other than to take up space better served doing actual work. One day I decided to send it to Surplus. Filled out the paper work and sent it off. Two days later I got my ass chewed out over the phone by Andy Grove. It was HIS personal equipment. How was I supposed to know that? No tag, no name and it had been sitting there for at LEAST 10 years. That was in 1998. It came back. This time I shipped it to HIS office/lab in Santa Clara with an apology. He called back and apologized to me for being an old Geezer. Good thing I worked for a partner company and not Intel directly. I might have been transferred to Germany or something. ;)
I love the look of VFD's as well but they have there limits as we all know and in this day and age I am not sure how long they will still keep making them as each company will surely phase them out, that been said i think it might be time for someone to make a project to have like a Universal LCD that could take its place with a programmable GPIO BUS and some basic graphics library I think that would be cool as i have so many AMPS with VFD's that there main issue is The VFD. VFD emu would be a good name... Keep up your videos.
You reprogrammed the EEPROMs? How so? Did you just copied the contents, erased them, and reprogrammed them? Or did you find the original content somewhere else?
Well done. Watching the electronics and listening to your explainations was great but I was also reading the subtitles and I can only imagine that you employ an Indian or Packie typist or use a speach to text program of dubious origin (microsoft or Google?) because it seems crazy that you would "fill it with water" and "Kill it" after doing all that work, the text is full of errors all the way through which I suppose for some viewers that dont understand the instrument functionality may find the written explaination more comical and increase the thumbs up? I am impressed, well impressed.Thank you.
Every minute a new superbe laugh, and i am just halfway now: contactspray ór leaking relaisfluid!! Hahaa yes indeed, these repvids are not only genius but genius hilarious!! Good to follow the technical level but even a greater joy to follow with this superclever ánd superhilarious e-jokes! Tjees, please please don't let these vids ever end
i was just watching a guy play with 40k dollars in euro rack gear, so, not sure why i'm here. but. you dropped a deadpool meme, so.. have to finish the watch now.
Ok so I watched a video by you about 2 years ago on the eleksmaker a3 pro... and ended up with a laser cutter, then ended up later with an oscilloscope when i saw your home lab. I feel like I should warn myself before watching your videos to not go buy stuff bahahaha But in all seriousness love the channel dude keep it up!
Did you count the relays? Other than a visit to an old fashioned telephone exchange back when I was a kid, I don't think I've ever seen so many relays in one place.
I watched to the very end, just waiting to hear what a German smoke detector alarm sounds like. Poor magic smoke released into the cold, cruel world without notice.
Oh no, enemy's' potted.
ogod I missed that opportunity
There it is, that's the comment. You win the internet.
Man I hated that stuff! But I'd gladly take it over the epoxy they seal stuff up with today... hehe and find myself using silicone rtv as potting compound for stuff today!
@@reps I can't believe it wasn't intentional 🤣
This Old Marco Reps has returned!
nice comparison.
K-k-k-k-keithley
hello friend
El Psy Congroo
"...being extra careful not to bend any leads"
_EEPROM tombstones in socket_
I let out a belly laugh.
then "cured" them (and erased some handles)
This level of comedy is illegal in Germany. I'm sending the police.
yep, that had me rolling
I made an odd yelping noise at this point
The godlike amount of work that has gone into this video is probably hard to describe. Congratulations on such a good channel. Enjoyed this longer video a lot :)
That EEPROM bit caused me severe physical pain
same tbh
Near the heart attack :D
In *[ B I E G E L E H R E ]* we trust.
"Being extra Careful not to bend any leads..." *cuts away* 😂👌🏻
I cringed when I watched that! (Been there...)
Funniest guy on youtube, hands down. And the other stuff is great too.
Ah, you're here too! Cool.
@@simont3686 😁👍
came for the electronics, stayed for the lols
"Other stuff"?? I think he has very good understanding about electronics and topotology, how fluke engineers made that thing to work.
@@negumanezer absolutely, was trying to be funny.
Marco, don’t be away for so long.
okay, next one in a few days :)
@@reps we are not worthy
@@reps ok, i'll need to find more goats to sacrifice
@@TheGodCold wait what
@@samdesplancke3906 I'm pretty sure marco is actually THE God of electronics
Now, that's the proper volt-nut stuff! I love these 5700 series calibrators. Too bad they have high-cost upkeep and now obsoleted for fancy LCD stuff...
Dislike must be from somebody trying to buy one of these from epay cheaply... Expected prices after video now +1000% :D
My heart still skips a beat watching Marco removing cans off oven hybrids. Memory of cracked unobtainable hybrid under it when cover went tilted still fresh....
The person calling Marco Reps the king doesn't know of the true king and his stacks of repaired 3458A's and 5700 series calibrators
Jesus Christ!!!! SEVENTEEN GRAND for a "refurbished" version.
@@MrMilarepa108 Back when the 5700A was new you could buy a very well equipped Cadillac...or a 5700A. And that's without any options.
Man, your sense of humor is DRY. I'm used to TH-cam presentations where a clown comes out and hits the host with a pie if they make a joke. Keep up the great work!
Easily one of the funniest channels out there. The perfect amount of humor to where you never expect it coming.
That kind of humor is not so uncommon in Germany and is probably what makes many people that are not capable of getting it, give them the reputation of "not being funny"
I thought British humor was dry, but they've got nothing on Germans, and I love it.
I erased my handles and cured my EEPROMs. Almost missed that, had to do a doubletake :D
I understand NOTHING in your videos and haven't for some time but every time you post a new video I stop what I am doing because you make it so fun to watch!
oh, they simple: ppms good, carbon resistors bad
marry my daughter
I believe the dowry is: "that elusive multimeter" !!
daughters name is "fluke" ?
@@henryganzer4685 My name is Fluke'a
@@jaroslawgrajdek3572 Does she live on the second floor?
Marco, your videos are extraordinarily entertaining. All the puns, technical information, and slapstick are a joy to watch. I don't comment much on TH-cam videos, but this one was just grand. Thank you for taking the time to create it.
I happen to have a set of high quality milli-Ohm shunt resistors for measuring high currents (5A, 25 A, 50A and 100A). They are 1 mOhm, 2 mOhm 4 mOhm and 20 mOhm. Not sure if those could be of any use to you. If so, let me know.
After one month I can finally take a breath
Far too many people are having this experience these days.
I know compressed air can send shards of molten solder all over the board… But if you pay careful attention as to the direction you’re pointing the compressed air tip… You can remove 99.5% of all solder with only about 35psi.
I use an airbrush hose because it is soft and flexible and easy on my wrist, and one of those plastic pistol grip blow gun attachments. The blowgun is angled so it’s very comfortable and easy to access hard to reach places. And even though the blow nozzle hole is only a few millimeters in diameter…I attache a football inflating needle to the tip of the blow gun. So that the air opening is less than a millimeter. This gives me uncompromised control, accuracy, and power but with low pressure.
The compressed air is narrowed into a very small stream. Anything over 50 psi and you risk blowing traces off of the board. I stay around 30psi
This will remove shit tons more solder than the best hakko solder vacuum, or even the best solder wick. Not only does it remove all this older but it also allows very short heat soaking into the board itself. I use a cheap 40 W iron and I can remove a 16 pin Dip Chip in under 20 seconds. Even in thick multi layer boards.
It literally just falls out the other side. So to recap.....no heat going into the board… And all of the solder is removed so it is stress-free. This helps those pesky traces stay where they’re supposed to be. Because even though pulling in prying can loosen traces… It’s not just stress from the component leads that makes the traces the laminate. It’s the heat soaking.
Just set the circuitboard down in a shoebox or cardboard box so the splatter doesn’t spread all over your shop. And then check the board carefully under a microscope all over to make sure there are no splatters are shorting out components. (Which on expensive boards I’m sure you are doing anyway.)
sometimes I am given the task to restore boards from a few of the local government facilities in my area… Boards that are in machines dating from the 70s and 80s. Boards that are pure unobtanium! Where replacements have never been available and the boards are “priceless“ as tools for these companies or agencies… This is by far the best method to remove 99.5% of the solder quickly and easily.
I am nowhere near as advanced as you. But industrial equipment repair /calibration is my specialty. I certainly do not have your understanding of electronics theory. But several years of trial and error I’ve picked up a few things here and there. I love to watch your channel and keep learning!
Many thanks for this tip. How wise. Don't suppose you can also recommend specific attachment(s)? Would a PCL BG405 be suitable? Or perhaps a BGS 3215? I am confused because whether to get 1/4 inch BSPT or 1/8 inch hose diameter... or if it can be metal instead of plastic which is best. If you can let us know? We would really appreciate that thanks.
@@dreamcat4 Glad to help anyway I can. Here is the exact pistol grip blowgun that I use. It is model number MP5143. I’v tried fancy ones and cheap ones… And the more lightweight the better!
And Instead of a regular air hose, I use braided nylon airbrush hose. The five dollar harbor freight airbrush hose will be fine. I got lucky and got a brand name Paasche hose.
The airbrush hoses are thin and usually only good to about 50 psi. They have a fabric covering and are super soft and flexible almost like silicone test leads.
Because with regular regular rubber air hose it’s too heavy and puts too much strain on the wrist. Whether you’re salvaging parts for hours, or removing very delicate parts… Strain on the wrist not only hurts your arm and causes problems… But it also gives less control.
I also install a sports ball inflation needle at the end of the blowgun to give extra control and an extremely narrow air jet. I cut a few millimeters off the needle tip so that I have only one hole coming out the end of the needle… Because most of the ball inflating needles have a small side hole which defeats the purpose of desoldering by allowing air to escape. I then shape and polish the end of the needle to a very fine rounded edge working from a file all the way up to a few thousand grit wet sandpaper and even buffing compound. so if I accidentally hit the board I don’t leave big scratches or gashes.
Thanks for the tip!
Great tip!
I'm still hovering at around 3% comprehension but I can't stop watching.
I immediately thought of "Mr. Bean: The Ultimate Disaster Movie" when I saw the cleaning rag moving towards those frail carbon keypad contacts. Poor Whistler's mother.
I absolutely love your videos, you are the one that has brought me to my new job as an "Elektromaschinenbauer" it isn't exactly what you do but it has the right balance between electronics and metalwork for me.
Thank you reps! ^^
Great. Can you provide the KiCAD PCB source files e.g. on github?
good idea, linked in the description! github.com/marcoreps/5700A
Wait 'till he re-spins the board to fix the fill issues around 'A', 'SPEC' and 'LIMIT' :D
Круто! +1.
Удивительно как для 88 года, такой многофункциональный девайс замутили флюковцы.
Автор молодец капитальную работу провел по ремонту и наладке такого серьезного и сложного прибора!
Burning away the problem... in Germany we call it "Freibrennen".
When soldering power resistors to a PCB it is better to have a little distance to the PCB for better air flow and keeping the PCB cooler.
I just about fell off my chair at the Deadpool smoke sniffing reference! I love the smell of solder and flux in the morning. Smells like victory.
As Paul of Mr Carlson's Lab has pointed out (a number of times), there are two different kinds of carbon composition resistors, an Allen-Bradley Hot Molded one with sharp corner ends, and then all the others with porous, rounded end packages. He and I are in full agreement that the Allen-Bradley ones never cause a problem, while all the others sooner or later do. And I would add that their trouble really comes sooner than later. The reason is that the hot molding process gives superior moisture protection. Moreover, their wire attachment is also good.
I still keep saving my 1979 Allen-Bradley catalog that states "Allen-Bradley Style RCR resistors not only meet all requirements of MIL-R-39008 but also exceed the S level (best level) of Established Reliability of 0.001 % failure rate per 1000 hours." That tells the story. Except that A-B got out of the business, sorry.
would be interesting to see what Marco thinks about this
BOFA fume extractor, good taste, not going for the discount one from Ligma.
Ah, there it is: another wonderful video in a long time.
Had the thing been given to me, I wouldn't have the slightest idea what to do with it. Even if this thing worked right away. And yet I always enjoy watching and being shown that such devices exist and that there is at least one person in the world who knows what to do with them and who treats them well. Biegelehre.
the moment we've all been waiting for, marco new videos
Also, with regards to your component dismantling, I have gotten a TESLA (not the set-on-fire computer-on-wheels Tesla) BM 566A oscilloscope and in the manual for it, the process of replacing parts goes like this: To prevent damage to the boards, if a component is soldered on (which, fun fact, the transistors and chips aren't, they're socketed), snip off the leads as long as you can and solder the new component on the leads.
is it me, or is it crazy that these are selling on eBay for $20,000 still? 30 years later?
It’s not you, it’s just awesome engineering :)
Me looking at all those tantalums everywhere: *orange kinda sus ngl!*
I am so envious of you! I want these types of equipments too! Guess I'll have to make jokes about the german metrology institute, but considering where I'm from, the germans might occupy us (again)
Love the longer video, it was well worth the wait!
14:17 Good to see you’re wearing your safety socks 🧦!
I love German. Biegelehre means 'bending gauge', but according to Google, Biehegelehre means 'bending apprenticeship'.
What a great thumbnail! Good job on the video, too! It is a joy to see such fully packed high quality measuring devices.
Regards,
Etna.
am a bit proud of that thumbnail, ngl :)
I still do not really know what this thing is for but you made great and funny video :D
Me: :(
Reps: uploads
Me: :D
Ich habe zwar kaum Ahnung von Elektrotechnik finde deine Videos trotzdem interessant.👍
Zusätzlich auf Deutsch wäre natürlich besser. ☺️
I used to use the 5700A in a cal lab back in the early 90's, it was one of my favorite pieces of gear, mostly because of the HP bus that let it be controlled remotely and some cal jobs could be done almost fully automatically, just had to change the setup. I don't recall the name of the controller but it had the cal procedures on 5 1/4 floppy disks.
Could you explain what the unit could be used for 😅
@@droneforfun5384 its a multifunction calibrator used to calibrate voltmeters and multimeters, can output calibrated voltages both ac and dc, resistances and current also ac and dc.
I work in a validation lab where we have two of these - one which failed. If you ever have a chance to acquire the amplifier for this unit, it is an amazing piece of equipment itself - increasing output current to 11A.
You need a smoke alarm, that final scene would have been much funnier.
Thank you. It was a privilege to get that deep into one of these Flukes 👍😎
I physically flinched at that EEPROM removal clip. Painful.
And man, I love your videos. My favourite channel on this page, I'm always looking forward to the next video. Grüße aus dem Badnerland.
You know when as a kid you get bored of your toy until your friend plays with it?
Yeah, you just made me love again my Fluke 8502A. Same beautiful modular construction, the boards are not just shielded: they have a plastic, VHS-looking case with a door for access to the test points. Thing of beauty!
Joy forever
26:47 Marco you could make a 5 hour video and not kidding the majority of us would literally watch every second of it. I mean for me they are the perfect videos to watch instead of working on my actual class projects, thanks for the lower gpa ! (p.s. lmao)
"...strong power supplies can sometime vaporize their problems before vaporizing themselves" *BRILLIANT!*
hmm, diggin that MT8208 now! another meter added to the pile...
The 5700 has two advantages over the older 5200 series: more digits and about 70% less weight.
Ever seen a Datron 4708? Still one of the best AC calibrators made...which has the unfortunate habit of beeping at you constantly when it is putting out over 100 volts AC.
That weird 26x256 VFD display should be possible to replace with something else.. there are 32x256 vfd's available. Perhaps it could be possible to tap into the serial bus and drive another type of vfd with that data.
Great content, Superb humor, Awesome video
I don't know why, even if i don't have a clue what he does in these videos, i always find this astonishing. The world of electrical engineering is so captivating...
insultingly super interesting! keep the good work up. even has no interrupting ads - awesome!
Very nice , better then xdev , gloves, proper tools, recapping all electrolyte capacitor,
Wonder where you get bending tools from , please send the link for it.
I don't understand electronics. This video helps my anxiety reduce and allows me to sleep.
Who calibrates the calibrators?
(sorry couldn't resist a pun meme!)
I honestly wouldn't mind videos spamming longer than an hour. (edit: as long as its not too much work that is :)
Those AC oscillator, AC control board and AC output design are based on the older 5200A, it has the same setup (I know I had to fix that... a 19 part video series!) the resistance board is based on the 5450A.
Fun fact: The "custom Fluke 22-bit ADC" is the exact same unit as is used in Fluke's 8840/8842 multimeters.
Smooth butterly voice that makes you feel unsure and safe at the same time! awesome. mhhhmmm
Good job
Regarding precision resistors
Buy the
quadtech decade resistor AKA GenRad 1433 Series Decade Resistor
Excellent equipment .
I have the QUADTECH 1659 RLC digibridge .
And with the help of the quadtech / GenRad 1433 Series Decade Resistor
You can get any value resistors in accuracy
0.01%
Great video! You're a pro. I was hoping maybe could bend your ear a bit on a calibrator I'm trying to repair. It's a Fluke 5520A. I've checked everything I can thing of and am still getting errors 399 and 309 during the self test and zero. Any help you could offer would be greatly appreciated. Thank you.
Negative resistance (NR) is a property of some electrical circuits and devices in which an increase in voltage across the device's terminals results in a decrease in electric current through it.
This is in contrast to an ordinary resistor in which an increase of applied voltage causes a proportional increase in current due to Ohm's law, resulting in a positive resistance. While a positive resistance consumes power from current passing through it, a negative resistance produces power. Under certain conditions it can increase the power of an electrical signal, amplifying it. How a resistor becomes a diode. :D :D
I had one of those old bangers on my workbench at Intel in the Product Development Lab. It served no purpose other than to take up space better served doing actual work. One day I decided to send it to Surplus. Filled out the paper work and sent it off. Two days later I got my ass chewed out over the phone by Andy Grove. It was HIS personal equipment. How was I supposed to know that? No tag, no name and it had been sitting there for at LEAST 10 years. That was in 1998. It came back. This time I shipped it to HIS office/lab in Santa Clara with an apology. He called back and apologized to me for being an old Geezer. Good thing I worked for a partner company and not Intel directly. I might have been transferred to Germany or something. ;)
I love the look of VFD's as well but they have there limits as we all know and in this day and age I am not sure how long they will still keep making them as each company will surely phase them out, that been said i think it might be time for someone to make a project to have like a Universal LCD that could take its place with a programmable GPIO BUS and some basic graphics library I think that would be cool as i have so many AMPS with VFD's that there main issue is The VFD. VFD emu would be a good name... Keep up your videos.
At around 11.20 I have seen that sort of buttons before, TV Remote controls, GREAT VIDEOS Thanks for these great videos.....
( 26:45 )
yes... I don't mind the length of the video while it's enjoyable and informative....
😊😊😊❤️❤️❤️
You reprogrammed the EEPROMs? How so? Did you just copied the contents, erased them, and reprogrammed them? Or did you find the original content somewhere else?
I HAD to Google it. TWENTY THOUSAND DOLLARS for a refurbished model! That was a great punishment.
Well done. Watching the electronics and listening to your explainations was great but I was also reading the subtitles and I can only imagine that you employ an Indian or Packie typist or use a speach to text program of dubious origin (microsoft or Google?) because it seems crazy that you would "fill it with water" and "Kill it" after doing all that work, the text is full of errors all the way through which I suppose for some viewers that dont understand the instrument functionality may find the written explaination more comical and increase the thumbs up?
I am impressed, well impressed.Thank you.
13:46 LUL
But then again, I also always do that when pulling DIPs. FeelsBadMan :gun:
Every minute a new superbe laugh, and i am just halfway now: contactspray ór leaking relaisfluid!! Hahaa yes indeed, these repvids are not only genius but genius hilarious!! Good to follow the technical level but even a greater joy to follow with this superclever ánd superhilarious e-jokes! Tjees, please please don't let these vids ever end
Dual wielding soldering irons is pretty awesome.
This project solidified your got tier status skill level. You must've grinded for xp. Haha. Now answer the question on my other video!
Did You really think You'd be able to slip that kind of unabashed self promoting into Your video without us noticing ??? (@16:18)
;)
i was just watching a guy play with 40k dollars in euro rack gear, so, not sure why i'm here. but. you dropped a deadpool meme, so.. have to finish the watch now.
Ok so I watched a video by you about 2 years ago on the eleksmaker a3 pro... and ended up with a laser cutter, then ended up later with an oscilloscope when i saw your home lab. I feel like I should warn myself before watching your videos to not go buy stuff bahahaha
But in all seriousness love the channel dude keep it up!
And they say Germans have no humour. I beg to differ.
Greetings from Holland!
Why does TH-cam not offer to add a like after completely watching this video a second time 😎👍🏼👍🏼
Isn't that the same button technique used in every TV remote?
Carbon pads are great for cost. Not so great for longevity :(
Did you count the relays?
Other than a visit to an old fashioned telephone exchange back when I was a kid, I don't think I've ever seen so many relays in one place.
I watch this videos without any idea what you're talking about. Even more enjoyable when drunk!
bottle that smoke at the end and sell it as perfume, and you'd be an instant millionaire :)
Why don't you build yourself one of those fancy elusive free energy devices and power all your lab equipment from that?
I watched to the very end, just waiting to hear what a German smoke detector alarm sounds like. Poor magic smoke released into the cold, cruel world without notice.
That tiny 's' after the rep..
Lol. Aromat.
Every Swiss person needs that condiment (google it, even the same color!"
Hug that sweet old lump of Fluke magic for me, and may it’s PPM’s ever be stable.
I need to repair the device, are there any schematics or where to look at the boards, the readings are floating, there are large errors, fluke 2255a😢
Perfect morning to watch another great video.
No *plop* noise when replacing the capacitors, disappointing... 🙄
I'm at work! noooooooooo!
sorry! I'll leave this one online for a while, so no rush
@@reps thnx Marco, I'm relieved now 😂
Thank You for still making those awsome videos!
You can get a USB to VFD translator on Tatooine but watch out for the Tusken Raiders.
By the love of good no... please... no more ChinaPCB. You're the last one to protect us from all of those 😪
I dont understand a thing he says but i like to watch these videos, am i alone ????
This calibrator looks like came from future, with through hole components....
Very interesting. I actually learnt something. Your TH-cam voice cracks me up; hilarious....
Physikalisch-Technisch-Bundesanstalt