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Old 5th September 2011, 08:15 PM   #1
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Default CLASS A POWER AMP

Hello to everybody!

I am kindly asking you for a schematic and PCB for a 10-20 watt class A amplifier.I know there are a set of rules in designing the PCB, but I haven't read them yet(actually, I'm a mechanics engineer and I'm very fond of audio).
I asked a coleague from work to design the PCB for me ( an electronics engineer) but he's not in the audio stuff and I don't think he followed the rules.
I will be forever greatfull and I will keep you up to date with the construction.

Best wishes,
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Old 6th September 2011, 12:01 AM   #2
Bigun is offline Bigun  Canada
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There are some amplifier designs you might like here:

The Class-A Amplifier Site

and all the pcb's you need here: http://www.kk-pcb.com/amps.html

don't forget to order a Large heatsink !
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Old 6th September 2011, 09:39 AM   #3
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Thank you very much Bigun! I know the schematics from JLH but it's kind of hard to order a PCB from Bucharest, that's why I wanted a schematic PCB for DIY purpose.Has anyone made a PCB for JLH class A amp?
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Old 6th September 2011, 10:26 AM   #4
selim is offline selim  Turkey
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Hi mselagea,

Could you please mail me at selim_ardali at yahoo dot com?
Maybe I can help.

Cheers

Selim
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Old 6th September 2011, 10:27 AM   #5
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Try here JLH-2005 NOTES
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Old 6th September 2011, 01:37 PM   #6
Bigun is offline Bigun  Canada
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Quote:
Originally Posted by mselagea View Post
Thank you very much Bigun! I know the schematics from JLH but it's kind of hard to order a PCB from Bucharest, that's why I wanted a schematic PCB for DIY purpose.Has anyone made a PCB for JLH class A amp?
To be honest, I suspect that you could get away without using a pcb for the JLH 10W amp. It's a classic amp with an excellent reputation. I believe JLH himself built it on a piece of stripboard.
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Old 6th September 2011, 04:00 PM   #7
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My vote goes to the little 10W mini aleph.
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Old 6th September 2011, 04:35 PM   #8
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Thank you very much everyone.I will talk to my coleague tomorrow regarding the links you have sent me.I will keep you updated with the results.
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Old 6th September 2011, 05:13 PM   #9
jerryo is offline jerryo  Isle of Man
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There are JLH pcb's on Ebay that you might have a look at; also kits with components for the same.
Check out Jims Audio ebay shop.
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