Quick question on the PP-C1 amp - Page 2

athos56 · 19th October 2007, 11:05 PM

I'm trying to be proactive

I downloaded PSUD2 and fiddled around with it. It suggested a cap values of 470uf, it had the 1n4007 diodes not the 1n4008. The voltage across the load resister was ~11v

athos56 · 20th October 2007, 05:16 AM

Does this look right? I'm not sure about all of the values; I just tried to get them close. I'm assuming the resister at the end is support to represent the load of the rest of the circuit? What are the B+1, B+2 suppose to be? Thanks for helping me work this out.

Svein_B · 20th October 2007, 07:37 AM

The PSUD2 model above is a full-wave rectifier. Selelect Voltage Doubler instead (or simulate with half-vave for 1/2 of the voltage).
I suggest large first C for max voltage and minumum ripple. Use an additional RC filter if necessary to get the ripple down to a mV or so. To squeze the last volt out of the circuit use Shotkey diodes.

Svein.

athos56 · 20th October 2007, 07:37 PM

I'm working on 2 things, the changes Ian recomended for the PS and the voltage doubler. Thanks for the advice on the cap value and diodes. I'll model the voltage doubler later today.

19th October 2007, 11:05 PM	#11
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Ok, ok I'm trying to be proactive I downloaded PSUD2 and fiddled around with it. It suggested a cap values of 470uf, it had the 1n4007 diodes not the 1n4008. The voltage across the load resister was ~11v

20th October 2007, 07:37 PM	#14
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Right I'm working on 2 things, the changes Ian recomended for the PS and the voltage doubler. Thanks for the advice on the cap value and diodes. I'll model the voltage doubler later today.

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20th October 2007, 07:37 AM	#13
Svein_B diyAudio Member Join Date: Oct 2005	The PSUD2 model above is a full-wave rectifier. Selelect Voltage Doubler instead (or simulate with half-vave for 1/2 of the voltage). I suggest large first C for max voltage and minumum ripple. Use an additional RC filter if necessary to get the ripple down to a mV or so. To squeze the last volt out of the circuit use Shotkey diodes. Svein.

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