Hi,
I've knocked up a regulated power supply for a preamp and as this is my first go at a board design I'd be grateful if somebody could give it a quick once over to check for any mistakes.
I based the design on one I found on the internet but I can't remember where I saw it. If it is your design that I have 'borrowed' then I'm sorry not to give you the due recognition. From what I can remember the original design had a star ground arrangement while mine uses a groundplane.
A couple of questions.
1. Will the design work?
2. Is groundplane or star ground better? Or should i not ask a question like this?
3. I'm going to be using a transformer with dual secondaries. Do I just put the 2 appropriate wires together to creat the 0V input? (similar to Nuuks power supply here http://myweb.tiscali.co.uk/nuukspot/decdun/gainclonepre.html )
4. Any improvements?
Thanks for any comments
Al
I've knocked up a regulated power supply for a preamp and as this is my first go at a board design I'd be grateful if somebody could give it a quick once over to check for any mistakes.
I based the design on one I found on the internet but I can't remember where I saw it. If it is your design that I have 'borrowed' then I'm sorry not to give you the due recognition. From what I can remember the original design had a star ground arrangement while mine uses a groundplane.
A couple of questions.
1. Will the design work?
2. Is groundplane or star ground better? Or should i not ask a question like this?
3. I'm going to be using a transformer with dual secondaries. Do I just put the 2 appropriate wires together to creat the 0V input? (similar to Nuuks power supply here http://myweb.tiscali.co.uk/nuukspot/decdun/gainclonepre.html )
4. Any improvements?
Thanks for any comments
Al
Attachments
1. It's very likely but I'll recommend that you take a look in the datasheets for the regulator. There you will have correct information.
2. Personally I would choose groundplane. Sometimes star ground is better but not in this case.
3. Yes, so add one more 0V connection
4. Not much if you want to do a basic LM317/337 PS.
For inspiration you can check my power supplies, both stand-alone and integrated in my amps.
2. Personally I would choose groundplane. Sometimes star ground is better but not in this case.
3. Yes, so add one more 0V connection
4. Not much if you want to do a basic LM317/337 PS.
For inspiration you can check my power supplies, both stand-alone and integrated in my amps.
It looks like my design you borrowed. A mention would be nice 🙂
It looks OK. Yes you just connect the two wires together at the PCB for your centre tap. I chose star ground but the circuit is quite small so a groundplane will be fine and I don't think you'll see any real difference.
C12 and C13 are optional really, in my own builds I just leave them out and employ local bypassing. Same goes for C6 and C7.
I assume you're getting the boards made which is why you didn't just use my files. DIY of double-sided boards is harder than single, but as your design is simple it should be not too bad.
It looks OK. Yes you just connect the two wires together at the PCB for your centre tap. I chose star ground but the circuit is quite small so a groundplane will be fine and I don't think you'll see any real difference.
C12 and C13 are optional really, in my own builds I just leave them out and employ local bypassing. Same goes for C6 and C7.
I assume you're getting the boards made which is why you didn't just use my files. DIY of double-sided boards is harder than single, but as your design is simple it should be not too bad.
Thanks for the comments Peranders. I'll have a look at your work.
@Richie00boy
I knew I'd copied it from somewhere, I just couldn't remember from where! Anyway, thanks very much for design, much appreciated. I hope it is ok to use it. I've got the opportunity to have a double-sided pcb milled for free so I thought I'd try to create my own in Eagle with some major copying from somebody who knows what they are doing!
Al
@Richie00boy
I knew I'd copied it from somewhere, I just couldn't remember from where! Anyway, thanks very much for design, much appreciated. I hope it is ok to use it. I've got the opportunity to have a double-sided pcb milled for free so I thought I'd try to create my own in Eagle with some major copying from somebody who knows what they are doing!
Al
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