Dual Voltage Supply build with the ICL7660
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- เผยแพร่เมื่อ 18 พ.ย. 2019
- Dual Voltage Supply build with the ICL7660
5 PCB's for about $22 in about a week: www.pcbway.com/
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HEY YOU ABOUT TO POST SOMETHING STUPID:
Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: cle.clinic/2TdS2Ux
One of the symptoms is that is causes fluid retention, mostly in the hands, feet/ankles, and face.
It will kill me one day. I'm doing ok right now, but someday...
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Here is all the gear I currently use:
Oscilloscope 1: Hantek DSO4102C amzn.to/35cVK71
Oscilloscope 2: Siglent SDS1202X-E amzn.to/31Kk1yH
Power Supply 1: TekPower TP3005N amzn.to/2TeQnxI
Power Supply 2: RUIDENG DP50V5A amzn.to/2sNicSe
Signal Generator: JS2800 ban.ggood.vip/d9vk
DMM1: Owon18B amzn.to/2SbIGLs
DMM2: Aneng 8008 amzn.to/2sNQncI
DMM3: Aneng 8009 amzn.to/2S5qeEp
DMM4: Uni-T UT801 amzn.to/2S89SuL
Soldering Station1: Zeny (Yihua)862D+ amzn.to/2S49z4e
Soldering Station2: KSGR T12 amzn.to/2Wk7Dn9
Light Meter Smart Sensor AS803 amzn.to/2B2gyRg - วิทยาศาสตร์และเทคโนโลยี
!!!! wrong polarity of C3 at schematic at 5:30 ! Its + positive should go to GND... Also, assembled wrong at 23:45... That cap should blow up soon! That could also explain why negative output voltage is not equal to a positive one...
Indeed I noticed that too. I hope he reads this *WARNING* before it actually explodes. Elco's exploding can be a bit violent and that may be bad for someone with a heart condition. I was even bracing for that cap to blow up when he put power to the circuit. But I guess it takes a little while.
Man, you have great timing I'm just starting a Bluetooth speaker project with my partner's son. this solves one of the biggest issues I had because I want to do the design from the component level instead of just buying board and sticking them together. great video Paul you rock.
More like this, man! This is good stuff!
Nice job on the PC board, the black looks great.
Thanks Paul, have a great evening.
Look forward to seeing your next video on the audio amplifier. I recently found one I built many years ago from a kit. If I find the pics I'll send them over.
Thank you for your videos instructive ! I'm french (sorry for my english) and i'm waiting with impatient your next video ! 👍😉
Great little circuit with an upper limit of 12v as far as I can tell. Built mine to plug into a breadboard.
Another nice IC to learn about! Thanks Paul! A quick tip: If you are doing a ground plane (or any other plane for that matter), you don't have to route those tracks. Saves time :)
Pretty interesting project, dude! Really nice! 😃
Very cool board, thank you
You're getting better and better with your board design. 😁 Nice stuff though I've never been an audio type but it's still interesting to learn new stuff. Thanks for the video!
Well that's just like your opinion, man. (The Dude abides)
You make very informative vids. I'm starting to realize that a datasheet is an engineer's best friend. Something they didn't really teach us at school. :)
"Thats a brand new pen" subscribe instantly 👍 really helpful information. I Kindly thank you
Great channel; love the simplicity.
Im still a beginner; many hours of theory but no hands on; yet little by little things are starting to make sense. Thanks to you; IC’s are becoming a bit less daunting.
Love the workshop; so clean and neat. Mine is a huge pile of recycles and only wish I could put together projects like you do.
I recently put together an small hybrid Class D with the info from that other channel 12voltsvids ; I couldn’t find an 18-0-18 transformer: therefore I had 3x12 volt transformers wired in parallel. They are all the same manufacture and specs. These did not have center tap, so I just took all of the safe reference ground and the other to positive and other to negative on the first two transformers. Now, on the third transformer I just did the same as to the first. Seems to have worked since I am now able to power it up with almost 2 amps and not exceeding 38C on them and 55 on the transistors.
The question is; since it’s meant to be used with ac - how can I power it with 2 Smps which deliver 5 amp each? Am I able to do that and how? Keeping in mind filtering I guess -
God bless you and yours -
John 3:16-17
Tie the grounds together
My grandmother passed from a combination of diabetes & CHF. If anyone ever gives you crap, i would personally kick their ass. I learn a lot from you and appreciate what you teach us (in fact im looking for an analog oscilloscope to align VCR"s now, because of what you taught.) I want you to stick around as long as you can my friend! Take care!
your videos are really useful and I request if you can suggest real time ic's which can triggered at set intervals. thank you
Excellent videos. Just to let you know that when you change from voice to music is too loud I was using headphones and it was like wow my ears!
Thanks a Lot
Grate 2020!
The best regards :)
kick ass shit sir!!! love the way you explain technical know how!!!
Hi Paul- Nice video- very informative. Didn’t you have an auto-router in a recent video? What happened? Did you change software?
Nice design, Paul. Curious about the size of your traces. What would be the maximum current you would expect and will the traces on your board provide that without adding voltage drop because of the small width?
I use the max1044 in guitar pedals because the boost pin oscillates above the audio frequency ranges, but everything else is identical. I typically use it for its ability to create a negative 9V rail so I can drive old Germanium PNP transistor circuits, like Tone Bender, Fuzz Face, and Range Master clones... or I forgo the max1044 and just use Sziklai Pairs.
Hi any ideas how to make those Power Probes for Automotive use? I Need to watch all your videos, your channel is very cool so I subscribed.
VERY NICE WAY TO GET SOMEONE INTERESTED IN MAKING THEIR OWN PCB's!!!
I remember, somewhere in the mid '80's using an Intersil version of the ICL7660 that could put out +/- 100mA...it really worked! Do you know if it is still around?? I think I even some around somewhere.
THANKS MUCH!
I just saw this pulled up a data sheet but could not find a current ratting anywhere. Intersil have the suffix CPAZ on there part I think.
Paul you can get rid of the two traces on the back by using 0 ohm jumpers ( through hole or surface mount).
Didn’t even need the jumpers for single layer, just routing outside the power out for center pin, and inside U1 for power path
The keyboard shortcuts would make your layout much more efficient in KiCAD. I'm still learning to use it too.
I always have trouble laying out the pcb!
I just found the ICL7660 100mA upgrade. It looks like a drop-in replacement. This one if from Maxim part# MAX660. Not sure about the caps value. I remember it because it worked so well.
Just wondering can I use it to get +6.4v and -6.0v ?
If yes then can you guide me please how
Thank you in advance
Is there a way for me to order that circuit board or would you sell one or two of them?
That is enough amps for analog synthesizers?
Diptrace auto routs and can also auto place.
Paul, I realize that this is an older video, but I am hoping for a response anyway. The data sheet is somewhat confusing to me regarding the current that I can expect the 7660 to handle. So what would you consider to be acceptable current output values for this chip at +9/-9v and +5/-5v, and why? Thanks in advance.
Sweet...
How about the amount of ripple on the voltage output
So the op amp can “swing” best simplest one word answer as to why it needs a negative
interesting... but I have no idea what an op amp is :( what software do you use or recommend for circuit design that's easy to use for beginners and with output files that I can send to production?
Try EasyEda
Nice
I have one query other than this:
I am using TC7662, its working on breadboard giving me -10V from +10V but when i use it on zero PCB its not. Tried everything still not working. Is it also some kind of startup problem. I am posting this problem to every electronic expert on youtube. Its freaking me out :(
Well, compliments for the knowledge share. Maybe next time you could explain how that chip it's converting the positive to negative voltage? Actually you can use also a ordinary 555 chip that requires a few extra components. By the way, the negative voltage drop it's due to a diode inside the chip. With a 555 you can show the working principle of such a converter easily, if you want to go deeper. Thanks for sharing!
Did the 555 video about 2 years ago
Why the constant use of flux? Don't you use multicore solder which has the correct amount of flux built in!
You can lower your grid size. That will give you more places where the traces can go. Also, you can hover above a component you want to move
and press "M". That's easier than clicking/selecting. Use "R" to rotate.
Standard pictures can only go on front or back silkscreen. You can put them on F.Cu or B.Cu but you have to modify the files.
Thanks. I'm new to Kicad as you can tell.
@@learnelectronics We are here to learn from and help eachother. I am a newby regarding electronics (2 years) and learnt a lot from you, so thank you!!
Hi Paul, Any chance you could provide the dual voltage board or the gerber file?
sure, email me @ arduino0169@gmail.com
I still prefer to use the cheap and easy way of a Voltage Divider.
And how do you get negative voltage from a positive source with a voltage divider?
it just heat my component
i have the icl7660 and it do not work
my chip also have a boost pin
Output cap was backward on the schematic
I just do not understand how you can supply a -5 volts. I'm pretty new to doing my own electronics. My brother got me an arduino kit for my birthday last year and I've been trying to learn since then. so supplying a negative voltage just confuses me completely
It's negative in relation to ground. Ground can be anywhere you make it. Think of it like this: two 9v batteries, twist the -'s together. Now take a meter and put the black (common) lead on the -'s. Touch the red lead to one of the +'s and you get +9V, touch the red lead to the other + and you get -9V. It's all about the relationship to ground.
Are you selling these dual power supplies? I found a customer for you!
your c2 is in wrong polarity . thanks for your videos
1:51... Headroom, Max Headroom, private eye.
Dating myself...but I watched that show.
@@wntu4 I watched them a few months ago on Betamax. I taped them off TV. I feel realy old. LOL.
M m m m mmmmax Headroom
I look cap in pin 5 not corectly. In datasheet schematict plus to Ground and negatip to pin 5
I like your circuits but I also enjoy designing and etching my own PC boards. That is all part of the fun of hobby electronics to me. And since I design my PC boards for the smallest realstate design, they come out looking great. I use LASER print transfer methods and they look ever so good as any factory I've seen. I even do a overlay for the part placements as well. So when the boards are stuffed and finish, you couldn't tell if it was a factory product or home built one. JMHO
Sadly the 7660 blows easily when powering from 3X 18650, its touch and go for the most part. best put that chip on a socket as you might need to change them a few time lol
3x 18650 fully charged in series should give between 11.1 and 12.6 volts. Notice the datasheet at 4:08 specifies a maximum supply voltage of 10V. It's not made to handle 3x 18650. The ICL7660A or ICL7660S can be an alternative because the absolute maximum supply voltage rating is specified at 13 volts, but it's still a bit too close for my taste.
You might consider the LTC1144, which I just found. It also comes in a pdip 8 package and can handle up to 18volts input. The datasheet even specifies it as a high voltage alternative to the 7660.
It's not that easy. You should have shown the amount of capacitor charge pump noise using that oscilloscope just yonder. I mean who needs negative supplies if not for audio?
5:38 Неправильно подключен конденсатор C3, неправильна полярность. Сравните с 3:23
You know your shit and I like most of your videos, but I am so confused now bro.
How can I help?
I’m no expert but the layout would be much simpler if you deal with the GND with just a gnd plane and not routing directly, or at least route gnd last.
Why no DRC? I give you a down vote ever time you skip that step -your PCBs May be free but regular people need to pay for mistakes.
Don’t just rotate footprints. Move (m) them and hit ‘r’ as they move. Less clicking around.
Don’t click. Hover over and move or whatever with the shortcut. It’s easier )for me anyways
Hit the drc button!! This is learn electronics. Lead by example!
So my son's girlfriend moved from Switzerland to Canada. She brought her PC with her. The power cord is a type J (three prong offset round prongs). The power supply says:
220/240v
50/60Hz
Max wattage 55w
Continuous voltage must not exceed 250w
The power supply doesn't have a switch to switch it from 240 to 120v. Can I swap out her power supply with a 110/120v power supply, or is there something else I need to do? I can't find an answer anywhere. 😕
Yep just swap out for 120V power supply