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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB

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#182
GB Status Update:

baswamin - 2 boards - Paid
meanie - 2 boards - Paid
jwjarch - 2 boards - Paid
gary s - 2 boards - Paid
nautibuoy - 2 SLB boards - 2 SLB-SR boards - both Paid, ship together
antoniopf1972 - 2 boards - Paid
ravid - 2 boards - Paid, Simple PSU Paid, ship at same time
Gricko - 2 boards - Paid
poseidonsvoice - 2 boards - Paid
Bkdog - 2 boards - Paid
Jazzfan - 4 boards - Paid
yoaudio - 2 boards - Paid
*van of monks - 1 board - *Invoice sent*
Wtl - 4 boards - Paid
cerole - 2 boards - Paid
s610adam - 4 SLB - 6 SLB-SR - Paid
pbergstrom - 2 boards - *need PayPal address*
ferret - 2 boards - Paid
Roundtoit - 2 SLB boards, 2 SLB-SR boards - Paid
Tubesguy - 1 SLB board - Paid
Kokanee - 8 boards - Paid
Arthur - 10 boards - Paid
potepuh - 2 SLB boards - Paid
TboneAK - 2 SLB Boards - Paid
Sanjeevm - 2 SLB Boards - Invoice sent
Centurion53 - 2 SLB boards - Invoice sent
Vunce - 2 SLB boards, 2 SLB-SR boards - Invoice sent
Ermine22 - 4 SLB boards - Need to know if want exchange for lost previous GB
Click to expand...
 
#183
Hi X,
Do you have a part number for the NTC 8D-20 at Mouser? The best match I can find here is only a 3A (max) rated one. I will just have to add this to my Mouser order.
Regards, Kevin

P.S. BTW, is this essential, for the PSU?
P.P.S. Just found a 10R 6A thermistor, that should be fine not so?
 
Last edited:
#186
Yes, we have lots of interest and I think it is because it is a very general and useful tool to have in one's Class A toolbox. I have implemented the single board dual rail SLB in a typical 25w Class A amp (the M2X) and using a 300VA 32v Antek, am able to get +/-25.4Vdc rails (a tad over 24v nominal spec but that's actually good as you get a bit more headroom. Will take some measurements soon but so far, all is quiet and no sign of hum.

GB Status Update:

baswamin - 2 boards - Paid
meanie - 2 boards - Paid
jwjarch - 2 boards - Paid
gary s - 2 boards - Paid
nautibuoy - 2 SLB boards - 2 SLB-SR boards - both Paid, ship together
antoniopf1972 - 2 boards - Paid
ravid - 2 boards - Paid, Simple PSU Paid, ship at same time
Gricko - 2 boards - Paid
poseidonsvoice - 2 boards - Paid
Bkdog - 2 boards - Paid
Jazzfan - 4 boards - Paid
yoaudio - 2 boards - Paid
*van of monks - 1 board - *Invoice sent*
Wtl - 4 boards - Paid
cerole - 2 boards - Paid
s610adam - 4 SLB - 6 SLB-SR - Paid
pbergstrom - 2 boards - *need PayPal address*
ferret - 2 boards - Paid
Roundtoit - 2 SLB boards, 2 SLB-SR boards - Paid
Tubesguy - 1 SLB board - Paid
Kokanee - 8 boards - Paid
Arthur - 10 boards - Paid
potepuh - 2 SLB boards - Paid
TboneAK - 2 SLB Boards - Paid
Sanjeevm - 2 SLB Boards - Paid
Centurion53 - 1 SLB boards - Invoice sent
Vunce - 2 SLB boards, 2 SLB-SR boards - Paid
Ermine22 - 4 SLB boards - Need to know if want exchange for lost previous GB
Click to expand...
 
#189
GB Status Update.... boards have been ordered and are at silkscreen step, maybe another day and they should be finished before shipping.

baswamin - 2 boards - Paid
meanie - 2 boards - Paid
jwjarch - 2 boards - Paid
gary s - 2 boards - Paid
nautibuoy - 2 SLB boards - 2 SLB-SR boards - both Paid, ship together
antoniopf1972 - 2 boards - Paid
ravid - 2 boards - Paid, Simple PSU Paid, ship at same time
Gricko - 2 boards - Paid
poseidonsvoice - 2 boards - Paid
Bkdog - 2 boards - Paid
Jazzfan - 4 boards - Paid
yoaudio - 2 boards - Paid
van of monks - 1 board - Paid
Wtl - 4 boards - Paid
cerole - 2 boards - Paid
s610adam - 4 SLB - 6 SLB-SR - Paid
pbergstrom - 2 boards - Paid
ferret - 2 boards - Paid
Roundtoit - 2 SLB boards, 2 SLB-SR boards - Paid
Tubesguy - 1 SLB board - Paid
Kokanee - 8 boards - Paid
Arthur - 10 boards - Paid
potepuh - 2 SLB boards - Paid
TboneAK - 2 SLB Boards - Paid
Sanjeevm - 2 SLB Boards - Paid
Centurion53 - 1 SLB board - Paid
Vunce - 2 SLB boards, 2 SLB-SR boards - Paid
*Ermine22 - 4 SLB boards - Need to know if want exchange for lost previous GB
Click to expand...

Everyone is all paid up - thank you! Just need info from Ermine22 what he wants to do about using credit he has on previous GB.
 
#198
Hi X,

I have a Moth 30 RIAA amplifier I want to rebuild at some point. Would a slightly scaled down version of this project be good enough to power it, viz. with 6800uF or max. 10 000uF caps? It draws a maximum of 1 A @ +24 V & -24 V. The other option of course is to power it with 4 12V SLA batteries.

Kevin
 
#199
Sure, 1A at +/-24 is no chump change. That’s almost as much as one channel of a Pass Class A 25w amp which typically draws 1.25A. 48W dissipation in the amp output stage is quite a lot. You could use 6800uF of course but 15000uF caps are not expensive and might as well get 50v ones so the PSU is good for higher voltages on the future.
 
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