Today I am start building my JLH power amplifier. I bought on eBay two PCB for voltage regulator. Please look PCB and heatsink placing and screw for mounting. I think use ultra fast diode (not schottky) Please help me select shunt capacitors for this 8 diode in parallel. What is better ceramic C0G, NP0 or Wima MKS polyester capacitors?
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I'd stick with polyesters... stability and tempco just doesn't matter here. Make sure you get a high enough voltage rating, and the correct lead pitch to fit the pcb... and without knowing the circuit can't tell you what that voltage rating would be.
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my 2c: For shunting rectifiers in the psu you are probably not needing something exotic - multilayer ceramic should be perfectly good. Buy from a reputable place, there's a lot of junk on the market and supply chains in the electronics industry are strained in certain areas.
Note that multilayer ceramic should not have the self-oscillation problems of the single layer devices.
Note that multilayer ceramic should not have the self-oscillation problems of the single layer devices.
Very good looking PSU board.
Metal standoffs look dangerous on the right hand side (third picture).
regards
Metal standoffs look dangerous on the right hand side (third picture).
regards
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Hi.
I think you can lok in this topic.
It is probably the official JLH Class A thread:
http://www.diyaudio.com/forums/solid-state/3075-jlh-10-watt-class-amplifier.html
Also schematics here:
http://www.tcaas.btinternet.co.uk/index-1.htm
HI.
So many version schematics of JLH class A, I like to know this guy build which version🙂. Thank you Sir.
So many version schematics of JLH class A, I like to know this guy build which version🙂. Thank you Sir.
Sorry I can not post shematic here, because i buy this board on eBay and this board have (C). You can write message to ebay seller and ask about shematic. This seller can sent to you shematic without value. I buy the PCB and receive full shematic with all value and BOM.
The circuit belongs to JLH, the eb seller is probably in China?
Is it the same as the JLH 69 or 96 ? or perhaps a variation ?
I believe many of the pcbs and kits from China on eb are straight or very slightly modified copies. Martin Levinson, Musical Fidelity, JLH, Nelson Pass, Naim, Marantz etc
Is it the same as the JLH 69 or 96 ? or perhaps a variation ?
I believe many of the pcbs and kits from China on eb are straight or very slightly modified copies. Martin Levinson, Musical Fidelity, JLH, Nelson Pass, Naim, Marantz etc
No this ebay seller from Europa. But I buy only power board for JLH amplifier. When I finished this PCB I buy amplifier PCB.
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