*points at box* "After 6 drinks try and remain upright and protect others from your vomit." God dammit that was beautiful, made me spit out the drink I wish I had right now...
and when you shut it off it stays running till the caps drain back down,the 1st time on the 220 mill setup l unplugged it but it stayed living, magic l say.
Those notches in the solder are from when the workers hand solder them. They use a technique where they rock the iron left and right as they solder. That is also why you see the through hole components, they get soldered along with the increased capacity traces
Back in 2000 I started a company where we could HAND solder BGA's. I had so much fun watching the disbelief on engineers faces when I'd tell em, not only can we remove the BGA's by hand, we can reflow them by hand. Of course there is some wizardry involved - but no fancy reflow ovens.
It's interesting that many schematics show an inductor before the capacitor, making a low pass filter. But the 3 phase at 50 to 60 hertz gets rectified into 300-360 hertz ripple, which is still pretty low-frequency. I would only imagine that the inductor would be very large to give the filter such a low cutoff frequency... Which makes me think that everyone would just use a bridge rectifier and capacitors, without the need for a large, bulky laminated inductor.
you need to place those notches on those traces so your reflow solder stencil does not get all floppy on yah and break it won't affect the current carry capability for it that much as the thinner traces are very short
@AvE They sliced up that soldered over trace like that so if it the trace does fail, it fails there, and not in some random location. (because the soldered over trace may not be uniform the entire length)
I have a feeling those bars/marks on the trace that they coated with extra solder was some sort of tool to keep it relatively even, since solder likes to clump together, you are likely to end up with one fatter section. Splitting it up like this would help it be more even overall, even if some sections are thinner. Just a theory though.
That board is a Surface Mount Board so the solder is put on with paste and a stencil. The bars on the power trace is stencil support to keep it rigid and not floopy floppy
Im not sure and dont jump on me if wrong, but i think that those fat traces are there so they increase the Thermal Capacity and they are slotted like that so they have a bigger surface to dissipate the heat
Ya know what i've been wanting to try... Since an inverter TIG welder is basically what you have there, i've been wanting to power something off of the leads from my welding machine. Maybe an electrolysis bath that converts the rust in 2 seconds flat. Maybe a thousand LED's...
my 220v outlet in the garage can't handle the dryer we have. in the winter it doesn't trip the breaker as bad as summer I've made sure the dryer is solid and pulling what it should from the outlet, I've also cleaned the thing inside and out to rule out any factors that might come about from clogged pathways for air and heat build up from dusty dirt covered parts, also cleaned all the ground and power contacts. (other factors are at play i.e. shit push button breakers, the longest run in the house to supply the power on 1940's building code wiring). sooooo my question is can I use the VFD to run the motor for the dryers drum and then run the heating element off another outlet on a different breaker.
I didn't know I needed this until now. So happy I subscribed. 👍 my greasy rag & clothes warsher has one to these built in for soft start/stop. Very cool.
Solder has the lines in there from the rollers or conveyor etc that it came out of the machine on. If you look at the other solder on the board you will notice there are more marks similar.
I bought an inverter mig welder for 200-300$ new. It's chinese, but a guy who serviced industrial welders did the inspection after importing it. Works like a charm.
I'd be seriously interested in some of those bgm sample packs. I build a lot of little things that require microcontrollers. I realize those aren't the same thing. With a NAND array containing a bootstrap though, great things are possible. FPGAs and BGMs become seriously useful. I'm familiar with reflow ovens so no issues there.
I have a three phase VFD lying around in my garage. Looking at that circuit diagram, could I use it to convert single phase 240v (US residential power) to three phase 240V???
what do I need to do or buy to get my aircompresser to run on my inverter? it only makes 31 amps... need 36 to get it going. , I have 5000 watt harbor freight inverter, 30 watt solar ,and four deep cycle marine batteries. works all my other stuff fine. help please.
Those lines in the solder are usually used as a fuse . That's how they can get you to buy a new one and all that's wrong is that solder trace needs to be resolder , I usually resolder those straight from the beginning .
in regards to VFDs have you ever come across "capacitor reforming" . in where a drive or other capacitor rich magic box has been left for a number of years , apparently the oxide layer in the caps needs to be reformed through a re-breakin procedure involving reduced voltages in increments and a "baking" wait time . anaywys love the vigeayos
Something worth considering is using the Google app on a smart phone. It has a camera fed translation mode that works pretty well between the only two languages I know at least. Not a complete picture but better than nothing.
I'm thinking the funky land pattern is created to be a "Shunt". A shunt is a low resistance path used to measure voltage drop which then can be translated into current. Perhaps used to monitor VFD current for overload protection. With the chop saw, why not just use a heavy (or bank of) diode to half wave the AC before the brush motor? That will give you half speed.
thanks for the vijeao as you say. always learn something here! the solder on that trace must have been applied during the smt placement. those lines are a sign of that. those lines are supports for the stencil. they SHOULD have reflowed the trace by hand after though... but those lines wont be too much of an issue because they are so small.
I used to work in a mold shop that made large container type molds ( think garbage can size) I used to make bearing blocks out of Nylatron. Not a problem to machine except when I did the grease grooves on the bearing surface. Biggest pain in the ass to deburr of almost anything I have worked on. :-) I think I still have a scrapped on in my junk pile somewhere here :-)
AvE You did a video on compressor using a VDF. Can you go into the correct sizing of the VFD? Also the motor on mine is so old that the FLA is not listed on the plate. .What to do, What to do? Thanks
I was asked this and wasn't sure on the answer. Th question is: if you ran an electromagnet with a VFD dose the field strength increase or decrease as you change the hertz?
Ave I just aquired a big ol servo, it has a broken mounting plate, and the wires were ripped out of one of the two jacks, I wanna spruce it up, and get it working again. but I can't find anything on it. care to help?
The solder on those tracks was most likely applied with a solder mask when they applied the solder for all of the surface mount components... The lines in the solder will be because they had to keep enough of the mask in place that it wouldn't fall apart when they squeege the solder through the holes. Cheers!!
Wouldn't the solder just flow over the gaps left by the mask? I have very little experience with solder paste and masks so it is quite possible that I'm wrong here.
+Charlie Mio Entirely possible... I was guessing that the flux was also applied using the same mask, and that the solder wasn't flowing as freely on the parts of the track without flux.... Only guessing here though... Certainly not an expert on the issue. Cheers!!
+Charlie Mio Entirely possible... I was guessing that the flux was also applied using the same mask, and that the solder wasn't flowing as freely on the parts of the track without flux.... Only guessing here though... Certainly not an expert on the issue. Cheers!!
The paste I use at work has the solder suspended in flux, so it all gets screened at the same time. Provided you get the proper amount of paste on the pads, you don't typically see the solder bridging over the mask.
Always dealt with the annoying stuff, never heard it called Silastic glue... never really heard it called anything before though. What's the advantage of this stuff? I usually see it quieting and supporting through hole caps. If I pop some RTV on there am I getting the same thing albeit slightly more flexible?
5:35 I bet that temperature sensor is actually a thermocouple, which is just two different types of wire joined together at one end. The junction between the different metals of the two wires creates a temperature dependent voltage. Awesome vids!
And what exactly were you trying to do? You can 1ph off a VFD a motor on a saw to get it to cut metal? Pretty sure output phase loss is under the list of faults that get ignored when I ignore all on those Altivars I have kicking around the shop. Hmmm....
+AvE I worked at a place that had a wave solder machine. There's a sump pump in the box that makes the wave. It pumps the molten solder up, and over a bar of metal. This one looks like it has two waves in it? www.speedlinetech.com/sites/default/files/products/wave-soldering-slide5.jpg But while you're looking at that the solder is circulating. So it looks like a waterfall. It is very Feng Shui.
What about throwing in a similar resistance load of some sort on the third phase connected to a neutral so you can run single phase tools? Or am I just crazy in thinking that might work?
or OR you could use a variac to control universal motors, some variacs can go over the input voltage, and the ones that can't can output to a step up transformer, which can be made out of a microwave oven transformer. if you want more power, you will have to hook it to an outlet that can supply more power.
You need to be careful using a oscilloscope on mains power and not using an isolation transformer or by just removing the ground pin. In most, if not all, common electrical systems the neutral is connected to the ground bus in the breaker panel. So you can still dead short an oscilloscope if you put the probe ground on hot.
It will be cool to see what you use that nylatron for. We use it on our atvs to replace the a arms bushings for racing applications. Fascinatingly enough it actually wears out the chromoly tube a arms. I have always wondered why that happens. Could you please explain that in a video about the nylatron?
I looked at adding solder traces on PCB's to reduce the resistance. Lead is so much less conductive that it work out to be a waste of time. It think lead conducts about 7% as good as copper. I have not looked at lead free solder, I am guessing i wont be any better.
OHHHHHH WOAAAAHHHHHHHYYYYEEEEEEEEEE WOO WOO 8:45 to 8:54 So the thing does power up from the DC!!!!!!!! Not AC!!!! OMG TYG!!! AvE and you have solved the worlds problem mate!!! I love you bro I love you like I love like a best friend now because if it wasn't for your help explaining why the device delayed to turn on I can now do what I need!!! AvE ABSOLUTE MAD LAD/LEGEND!!!!
Speaking of inverters, I would love to do a teardown (and rebuild) of my Exide 2000ex 2000watt (more like 3500watt) inverter. It is a 12v to 120v modified sinewave inverter/charger and I swear they built EVERYTHING on it WAYY over spec. I just can't find any documentation on it anywhere -.-
Regarding the slots in the extra solder on the high-current traces. The solder paste is scraped out on the PCB with a sharp "rake" through a thin, laser cut stencil. All large openings in the stencils need to have "spokes" to prevent the rake from getting caught on the edge as this would f*ck up the stencil. And the negative effect of those slots is roughly proportional to the percentage of spoke vs. trace length. Say 5%.
an inverter also inverts the voltage, so you get an negative sinus half wave compared to ground and not only rectangular wave between ground and voltage.
The breaks in the extra solder of the top are to avoid cracks due to thermal expansion. Just like in the cracks in cement slabs. he extra stuff does help with current load and cooling.
I'v got a question ave. ok instead of buying a vfd how can. I get cheep bare bones speed control and I am not shy have something that could blow or shock the f out of me. it don't Haft to last but a week at most hell what about a wall dimmer switch what you thank
That's some bigass nylatron, I just put nylatron bushings in the pedal assembly I modified for my bus, I just put a video up on it too. I'm converting my schoolbus from an automatic to a manual.
Are you sure the scope is floating? PE and N are basically the same wire (the only difference being that PE can not be cut by a breaker), does disconnecting PE really help?
Why on my scope my electricity in my house is a perfect sighnwave but its supposed to be 60hz but it's 59 hz it says it keeps saying 59hz one minute and 60 the next yes im in the US
Do all similar controllers reduce voltage ALLSO as they reduce speed/frequency??? Doesn't that mean a very low torque if used "as intended" with a synchronous motor?
They're mostly intended to be used with asynchronous motors. And yes, they all reduce voltage with frequency.. However, they all also have voltage boost functions that raises voltage at the lower end, usually comes preset to nice boost level.. And some will also have configurable startup boost and acceleration boost... One step up from that you'll find various forms of flux current control, which uses a mathemagical model based on the motor rating plate data that you give it, to figure out how much voltage and current it needs to keep the rotor magnetized, and how much current it needs to make it spin. Evens out the torque, makes the motor run cooler most of the time, because it's not giving it any more energy than it needs. Further step up you get sensorless flux vector control, which is basically using pure black magic to provide full torque from almost standstill to the full rpms. Just getting this mode properly configured is a kind of black arts. For tinkerers who like to (ab)use things, the V/Hz models are the most useful, because they're the dumbest and wont get all whiny and upset when they discover that you've got random tools and stuff attached to it.
Holy buckets, haven't seen one of those gator socket things in ages. I figured those things were just a bunch of bologna as most as seen on TV things are but kind of wanted to try one as every now and then one of those miracle items actually works okay. Figured if I saw one at a thrift store or garage sale for a buck I'd grab it but so far nothing.
Please AvE I need help Where can I find out how to calculate what size capacitor and inductor I need to smooth out a high frequency? ie 300Hz approximately. Thanks buddy
This content has helped me understand how wind turbine VFD converter cabinets work and help me troubleshoot them.
*points at box* "After 6 drinks try and remain upright and protect others from your vomit."
God dammit that was beautiful, made me spit out the drink I wish I had right now...
KrazeeCain I WAS LITERALLY CRYING WHEN HE SAID THAT! CLASSIC!!!!!!!!!
The top solder will be paste, the bars needed to stop the paste stencil falling apart.
and when you shut it off it stays running till the caps drain back down,the 1st time on the 220 mill setup l unplugged it but it stayed living, magic l say.
Very current of you to cover IGBT issues.
It's because of this channel I got my old Radio Shack multimeter chrome plated. Keep on choochin'
Those notches in the solder are from when the workers hand solder them. They use a technique where they rock the iron left and right as they solder. That is also why you see the through hole components, they get soldered along with the increased capacity traces
Back in 2000 I started a company where we could HAND solder BGA's. I had so much fun watching the disbelief on engineers faces when I'd tell em, not only can we remove the BGA's by hand, we can reflow them by hand. Of course there is some wizardry involved - but no fancy reflow ovens.
thank you "AVE" for your videos. you are the reason i started in electronics. i also love the way you dumb it down so i can under stand it. AWESOME
God I hope this isn't foreshadowing.
I find myself completely lost and mesmerized at the same time watching these vijaoes.
It's interesting that many schematics show an inductor before the capacitor, making a low pass filter. But the 3 phase at 50 to 60 hertz gets rectified into 300-360 hertz ripple, which is still pretty low-frequency. I would only imagine that the inductor would be very large to give the filter such a low cutoff frequency...
Which makes me think that everyone would just use a bridge rectifier and capacitors, without the need for a large, bulky laminated inductor.
I'm a follower of Mustie1 as well. He makes some nice stuff!
you need to place those notches on those traces so your reflow solder stencil does not get all floppy on yah and break
it won't affect the current carry capability for it that much as the thinner traces are very short
@AvE They sliced up that soldered over trace like that so if it the trace does fail, it fails there, and not in some random location. (because the soldered over trace may not be uniform the entire length)
Glad to see you do a vidjeo on VFD's, ask me for some shop prons of the VFD's we run, home shop running 4. Love yer content AVE
Use google translate on your phone to translate text from pictures, it's not perfect but can usually get you around.
Aha, they finally arrived! I helped cut the big chunks of plastic at the end. :D
I used to build and wire massive vfd's for pump jacks in north Dakota. Fun stuff!
I have a feeling those bars/marks on the trace that they coated with extra solder was some sort of tool to keep it relatively even, since solder likes to clump together, you are likely to end up with one fatter section. Splitting it up like this would help it be more even overall, even if some sections are thinner.
Just a theory though.
That board is a Surface Mount Board so the solder is put on with paste and a stencil. The bars on the power trace is stencil support to keep it rigid and not floopy floppy
Don't know why you need a dummy load when you got two perfectly good hands!
Im not sure and dont jump on me if wrong, but i think that those fat traces are there so they increase the Thermal Capacity and they are slotted like that so they have a bigger surface to dissipate the heat
Awesome work mr Canada.
Did you happen to see what brand if any those big electrolytics were?
Ah the good stuff.
Ya know what i've been wanting to try...
Since an inverter TIG welder is basically what you have there, i've been wanting to power something off of the leads from my welding machine. Maybe an electrolysis bath that converts the rust in 2 seconds flat. Maybe a thousand LED's...
my 220v outlet in the garage can't handle the dryer we have. in the winter it doesn't trip the breaker as bad as summer I've made sure the dryer is solid and pulling what it should from the outlet, I've also cleaned the thing inside and out to rule out any factors that might come about from clogged pathways for air and heat build up from dusty dirt covered parts, also cleaned all the ground and power contacts. (other factors are at play i.e. shit push button breakers, the longest run in the house to supply the power on 1940's building code wiring). sooooo my question is can I use the VFD to run the motor for the dryers drum and then run the heating element off another outlet on a different breaker.
I didn't know I needed this until now. So happy I subscribed. 👍 my greasy rag & clothes warsher has one to these built in for soft start/stop. Very cool.
Solder has the lines in there from the rollers or conveyor etc that it came out of the machine on. If you look at the other solder on the board you will notice there are more marks similar.
Thank you for pointing me to the electro boom chanel. I just pissed myself watching that guy shock himself.
Nice tip on the gator grip socket, cheers!
I bought an inverter mig welder for 200-300$ new. It's chinese, but a guy who serviced industrial welders did the inspection after importing it. Works like a charm.
Is it possible to chop apart a inverter to turn what would normally be a DC welder in a HF - AC for tig welding aluminum?
I'd be seriously interested in some of those bgm sample packs. I build a lot of little things that require microcontrollers. I realize those aren't the same thing. With a NAND array containing a bootstrap though, great things are possible. FPGAs and BGMs become seriously useful. I'm familiar with reflow ovens so no issues there.
I have a three phase VFD lying around in my garage. Looking at that circuit diagram, could I use it to convert single phase 240v (US residential power) to three phase 240V???
what do I need to do or buy to get my aircompresser to run on my inverter? it only makes 31 amps... need 36 to get it going. , I have 5000 watt harbor freight inverter, 30 watt solar ,and four deep cycle marine batteries. works all my other stuff fine. help please.
Those lines in the solder are usually used as a fuse . That's how they can get you to buy a new one and all that's wrong is that solder trace needs to be resolder , I usually resolder those straight from the beginning .
in regards to VFDs have you ever come across "capacitor reforming" . in where a drive or other capacitor rich magic box has been left for a number of years , apparently the oxide layer in the caps needs to be reformed through a re-breakin procedure involving reduced voltages in increments and a "baking" wait time .
anaywys love the vigeayos
AVE, does you DVM meter need a VFD filter to measure the VFD motors voltage and frequency? why does VFD motors cause noises and interference's?
Something worth considering is using the Google app on a smart phone. It has a camera fed translation mode that works pretty well between the only two languages I know at least.
Not a complete picture but better than nothing.
Those gator grip sockets are awesome on wingnuts too.
+Michael O and for small hooks!
hi ave will this work with my 3hp single phrase mother 2800 rpm it for my grill press the grill press rpm is 1400 mite to much.
I'm thinking the funky land pattern is created to be a "Shunt". A shunt is a low resistance path used to measure voltage drop which then can be translated into current. Perhaps used to monitor VFD current for overload protection.
With the chop saw, why not just use a heavy (or bank of) diode to half wave the AC before the brush motor? That will give you half speed.
thanks for the vijeao as you say. always learn something here! the solder on that trace must have been applied during the smt placement. those lines are a sign of that. those lines are supports for the stencil. they SHOULD have reflowed the trace by hand after though... but those lines wont be too much of an issue because they are so small.
Whut? Will that lectrical dohickey start my truck or power my still? Thanks for the video.
I used to work in a mold shop that made large container type molds ( think garbage can size) I used to make bearing blocks out of Nylatron. Not a problem to machine except when I did the grease grooves on the bearing surface. Biggest pain in the ass to deburr of almost anything I have worked on. :-) I think I still have a scrapped on in my junk pile somewhere here :-)
That weirs socket thing, i have one as well. More uses include screwing in hooks amd eye bolts.
AvE You did a video on compressor using a VDF. Can you go into the correct sizing of the VFD? Also the motor on mine is so old that the FLA is not listed on the plate. .What to do, What to do? Thanks
I was asked this and wasn't sure on the answer. Th question is: if you ran an electromagnet with a VFD dose the field strength increase or decrease as you change the hertz?
I think the term you were looking for was thermister for the hot checker on the heatsink.
Ave I just aquired a big ol servo, it has a broken mounting plate, and the wires were ripped out of one of the two jacks, I wanna spruce it up, and get it working again. but I can't find anything on it. care to help?
Can you load two of the phases with a similar resistive load and drive what ever?
Hehehe, drive 3 single phase motors at the same time
The solder on those tracks was most likely applied with a solder mask when they applied the solder for all of the surface mount components... The lines in the solder will be because they had to keep enough of the mask in place that it wouldn't fall apart when they squeege the solder through the holes. Cheers!!
Wouldn't the solder just flow over the gaps left by the mask? I have very little experience with solder paste and masks so it is quite possible that I'm wrong here.
+Charlie Mio Entirely possible... I was guessing that the flux was also applied using the same mask, and that the solder wasn't flowing as freely on the parts of the track without flux.... Only guessing here though... Certainly not an expert on the issue. Cheers!!
+Charlie Mio Entirely possible... I was guessing that the flux was also applied using the same mask, and that the solder wasn't flowing as freely on the parts of the track without flux.... Only guessing here though... Certainly not an expert on the issue. Cheers!!
The paste I use at work has the solder suspended in flux, so it all gets screened at the same time. Provided you get the proper amount of paste on the pads, you don't typically see the solder bridging over the mask.
Always dealt with the annoying stuff, never heard it called Silastic glue... never really heard it called anything before though. What's the advantage of this stuff? I usually see it quieting and supporting through hole caps. If I pop some RTV on there am I getting the same thing albeit slightly more flexible?
5:35 I bet that temperature sensor is actually a thermocouple, which is just two different types of wire joined together at one end. The junction between the different metals of the two wires creates a temperature dependent voltage.
Awesome vids!
Hahaha wicked video! I'm a 3rd year elechicken and I really like the electronics side of things! Thanks for breaking it down!
when i used single phase to 3 phase inverter xsy-AT1 then i am not getting exact sine wave
can u please help me
Love all your vids thanks for the shows ;).....
And what exactly were you trying to do? You can 1ph off a VFD a motor on a saw to get it to cut metal? Pretty sure output phase loss is under the list of faults that get ignored when I ignore all on those Altivars I have kicking around the shop. Hmmm....
I'd love to see you tear down a vector drive next.
AvE IS THE MAN
My guess is that the reason for those "slotted" solder covered traces is a limitation in wave soldering process
+AvE I worked at a place that had a wave solder machine. There's a sump pump in the box that makes the wave. It pumps the molten solder up, and over a bar of metal. This one looks like it has two waves in it? www.speedlinetech.com/sites/default/files/products/wave-soldering-slide5.jpg
But while you're looking at that the solder is circulating. So it looks like a waterfall. It is very Feng Shui.
What about throwing in a similar resistance load of some sort on the third phase connected to a neutral so you can run single phase tools? Or am I just crazy in thinking that might work?
would love to see you go through a welder and compare cheapo welders using MOSFETs to igbt welders and compare the how skoocum Miller is vs lincoln
what is the best phase converter to run a welder
Why do the pixies blow blue smoke when they get angry?
+AvE haha
Don't know about this one, but some of these inverters have a jumper or setting to throw them into singular phase operations.
or OR you could use a variac to control universal motors, some variacs can go over the input voltage, and the ones that can't can output to a step up transformer, which can be made out of a microwave oven transformer. if you want more power, you will have to hook it to an outlet that can supply more power.
You need to be careful using a oscilloscope on mains power and not using an isolation transformer or by just removing the ground pin. In most, if not all, common electrical systems the neutral is connected to the ground bus in the breaker panel. So you can still dead short an oscilloscope if you put the probe ground on hot.
"Put down a bowl of rice and wait for the Iphone fairy to come." 😂
It will be cool to see what you use that nylatron for. We use it on our atvs to replace the a arms bushings for racing applications. Fascinatingly enough it actually wears out the chromoly tube a arms. I have always wondered why that happens. Could you please explain that in a video about the nylatron?
I looked at adding solder traces on PCB's to reduce the resistance. Lead is so much less conductive that it work out to be a waste of time. It think lead conducts about 7% as good as copper. I have not looked at lead free solder, I am guessing i wont be any better.
OHHHHHH WOAAAAHHHHHHHYYYYEEEEEEEEEE WOO WOO 8:45 to 8:54 So the thing does power up from the DC!!!!!!!! Not AC!!!! OMG TYG!!!
AvE and you have solved the worlds problem mate!!! I love you bro
I love you like I love like a best friend now because if it wasn't for your help explaining why the device delayed to turn on I can now do what I need!!!
AvE ABSOLUTE MAD LAD/LEGEND!!!!
Speaking of inverters, I would love to do a teardown (and rebuild) of my Exide 2000ex 2000watt (more like 3500watt) inverter. It is a 12v to 120v modified sinewave inverter/charger and I swear they built EVERYTHING on it WAYY over spec. I just can't find any documentation on it anywhere -.-
Did you know Altera lists your stratix bga thingy as 7500 usd per unit ( as in seventyfivehundred americano dollaro ) ?
Then he is a rich man
Can you use a 1Phase motor with a 1Phase in 3Phase out VFD?
word find has to be one of the handiest things I've discovered. Works on confusers or computers if you will, by pressing CTRL+f to search a web page.
Could be a fuseable link, the weak link in the chain in a easy spot to fix? That's thinkerin if so.
hi Avi, can these things be fixed I got a Chinese one that's come up with an overload error code what do you recon?
Is there any reason to use impact sockets vs regular sockets? I've never been able to find chrome plated ones explode like people say
+AvE That would make for a very intriguing experiment for the shop. Not sayin just sayin.
Regarding the slots in the extra solder on the high-current traces. The solder paste is scraped out on the PCB with a sharp "rake" through a thin, laser cut stencil. All large openings in the stencils need to have "spokes" to prevent the rake from getting caught on the edge as this would f*ck up the stencil.
And the negative effect of those slots is roughly proportional to the percentage of spoke vs. trace length. Say 5%.
Any chance the solder was like that to create a shunt?
+Phil Armishaw i think that too
+horogandris yep thats entirely correct
Phil Armishaw h
can i use my 110 60hz brushed tools on 240 50hz with a 110 stepdown transformer? will there be any negative effects?
What´s the difference between the inverter compared to PWM signal conditioning?
an inverter also inverts the voltage, so you get an negative sinus half wave compared to ground and not only rectangular wave between ground and voltage.
FreeOfFantasy Thank you Sir.
So if you can get a single phase out VFD, would it work to slow down a bench grinder? I've been looking at one from Eaton. Thanks
Is an IGBT the same as a ECM motor module?
The breaks in the extra solder of the top are to avoid cracks due to thermal expansion. Just like in the cracks in cement slabs. he extra stuff does help with current load and cooling.
On the o-scope, was that the 60HZ coming through causing the wave to move up and down as a whole?
I'v got a question ave. ok instead of buying a vfd how can. I get cheep bare bones speed control and I am not shy have something that could blow or shock the f out of me. it don't Haft to last but a week at most hell what about a wall dimmer switch what you thank
+AvE. thanks man love the channel. by the way
+AvE You use a 90 or 180 volt DC drive for brushed tools..
That's some bigass nylatron, I just put nylatron bushings in the pedal assembly I modified for my bus, I just put a video up on it too. I'm converting my schoolbus from an automatic to a manual.
To isolate the ground on the oscilloscope use one of those adapters to plug a 3-prong cord into a pre 1970s 2 prong Outlet.
Are you sure the scope is floating? PE and N are basically the same wire (the only difference being that PE can not be cut by a breaker), does disconnecting PE really help?
Inverter? I hardly know her!
lol
+Granite Let's do a three phase. You inverter from the front and I'll rectifier from the rear. Zak can run the camera.
***** No, once you get to three or more phases I'm out. Not even doing the camera.
+A. Zak Wise decision. Any more than three and there's elbows flying everywhere.
@@Robert_Browne three holes noone needs resisting
I had fun setting one of these up for my desktop cnc spindle! It's made better by trying to translate the Chenglish...
Why on my scope my electricity in my house is a perfect sighnwave but its supposed to be 60hz but it's 59 hz it says it keeps saying 59hz one minute and 60 the next yes im in the US
you can tell me which part you want read,send me a photo,I will translate for you
400 HZ is what is used in aircraft. Yeah I'm subbed. Good video.
Do all similar controllers reduce voltage ALLSO as they reduce speed/frequency???
Doesn't that mean a very low torque if used "as intended" with a synchronous motor?
They're mostly intended to be used with asynchronous motors.
And yes, they all reduce voltage with frequency.. However, they all also have voltage boost functions that raises voltage at the lower end, usually comes preset to nice boost level.. And some will also have configurable startup boost and acceleration boost...
One step up from that you'll find various forms of flux current control, which uses a mathemagical model based on the motor rating plate data that you give it, to figure out how much voltage and current it needs to keep the rotor magnetized, and how much current it needs to make it spin. Evens out the torque, makes the motor run cooler most of the time, because it's not giving it any more energy than it needs.
Further step up you get sensorless flux vector control, which is basically using pure black magic to provide full torque from almost standstill to the full rpms. Just getting this mode properly configured is a kind of black arts.
For tinkerers who like to (ab)use things, the V/Hz models are the most useful, because they're the dumbest and wont get all whiny and upset when they discover that you've got random tools and stuff attached to it.
Holy buckets, haven't seen one of those gator socket things in ages.
I figured those things were just a bunch of bologna as most as seen on TV things are but kind of wanted to try one as every now and then one of those miracle items actually works okay.
Figured if I saw one at a thrift store or garage sale for a buck I'd grab it but so far nothing.
Can you still measure the vfd output just like ac?
Please AvE I need help
Where can I find out how to calculate what size capacitor and inductor I need to smooth out a high frequency? ie 300Hz approximately.
Thanks buddy