Uni-Byte 0193 - It WORKS!!!- Hiland POWER Supply Kit : Part 3

Рет қаралды 1,530

Күн бұрын

After a lot of testing and modification the Hiland regulated and adjustable power supply kit is now functioning very well. However, we had to restrict it to 0-20V and 0-25A and make some (many) changes.
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Пікірлер: 22

@brieftodo 4 ай бұрын

Thanks. Your mods and those done on @Elecifun channel seem to be perfect answer for my linear psu.

@uni-byte 4 ай бұрын

Glad to help!

@johnnz4375 4 ай бұрын

Just a couple of comments, the rule of thumb is 2200uF/ 1amp. Also if you use a bridge rectifier the transformer must be able to deliver 1.41 X the output current. On some of these PCBs T3 is the wrong way around what results in the current limiter not working. I build this power supply in a 0.....30V and 0......3A and it works well with a correct transformer and sufficient capacitors I also added a extra transistor and emitter resistor to divide the load. Used a old CPU heatsink with a fan and even when shorted it only gets hand warm. I hope this helps.

@uni-byte 4 ай бұрын

Thanks for the comment!

@t1d100 4 ай бұрын

Thumbs up for keeping at it.

@uni-byte 4 ай бұрын

Thanks! Sometimes I may put things aside, but only if they have not given me a challenge. LOL!

@heinzkreutziger2218 3 ай бұрын

Great work to get the kit running! Could you please summarize all changes you have done? There was the zener diode, R12 and R18, right? Did I miss something?

@uni-byte 3 ай бұрын

Thanks. I'll put a summary in the description of the last video in the next day or so. There is more to it.

@andymouse 4 ай бұрын

Awesome...cheers!

@uni-byte 4 ай бұрын

Thanks for your support @andymouse.

@jackmefford6902 Ай бұрын

I enjoyed your videos on the Temu 30v 3a power supply. I bought two of them and neither work. The second one I put in Circuit IC Sockets Connectors for the Tl081’s. And ordered some 1/2 watt resistors to replace the 81 ohm because it was getting very hot. I built a simple op amp tester and one checked bad on second kit. I replaced it with a good one and got 31 volts for about 6 seconds. The Tl081 got so hot it burned my finger and then it went back to negative.6 volts at the output. Same as the first one I built. I am a hobbyist so it gets over my head pretty quick, but wanted to know if you had time to give me some suggestions. Thank you, Jack

@uni-byte Ай бұрын

I pretty much cover everything in this series. Did you see part 4? Look at it and ask me some specific questions if they are not answered by then.

@iceberg789 Ай бұрын

that tl081 don't usually feel about 24V p2p ac supply. apart from that this circuit has so many design flows. i have it though, on my table, serving 0-20V / 0-1.8amps, with a 0-18V transformer, just to be on the safe side without any mods. thanks for recommending 3.9v zener and lm741. i may just change them someday.

@uni-byte Ай бұрын

You're welcome

@jackmefford6902 Ай бұрын

Are there any schematics out there for this power supply with voltages. That would help me a lot.

@uni-byte Ай бұрын

Not that I'm aware of. I found only two schematics and neither had voltages on them.

@snakezdewiggle6084 4 ай бұрын

The Capacitor is getting Hot.! Something is desperately wrong there. The 741's are good move. (1.1 billion manufactured ever 10 months). We should be buying them by the bushel...

@uni-byte 4 ай бұрын

The capacitor had an ESR of more than 3 times that of the Nichicon! For 99% of what you need an op-amp for, the 741 is golden.