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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
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Old 14th July 2019, 12:09 PM   #461
syracuze is offline syracuze  United Kingdom
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
Looks like a very cool power supply, impressive ripple specs!
Any info on the power supply impedance?
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Old 14th July 2019, 02:05 PM   #462
xrk971 is offline xrk971  United States
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
The SLB is designed for Class A where the max current needed is always flowing. I don’t think impedance matters as much here like regulated PSU’s for Class AB Amos that may be called upon to open a pass transistor from near zero max. However, it does have a Toshiba audio grade power BJT for the Pass element set up in a CFP topology. So basically like a high speed power amp stage. I would expect impedance to be quite low.
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Old 15th July 2019, 01:58 AM   #463
xrk971 is offline xrk971  United States
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
All SLB GB orders packed and labeled today. Will go out tomorrow. Also includes Yarra orders, WBA18s, PCAs, and Aksa Lender PCAs.

The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB-c8032949-44c2-49e6-9f52-51e6cd1dae07-jpeg
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Old 15th July 2019, 03:14 AM   #464
astromo is offline astromo  Australia
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Nice work. Well done.
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Old 15th July 2019, 05:25 AM   #465
jwjarch is offline jwjarch  United States
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Wow!!! Thanks for taking all the time to do this for us X!
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Old 15th July 2019, 06:34 AM   #466
xrk971 is offline xrk971  United States
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
You are welcome! Just part of the GB routine now. It is a lot of work though.
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Old 17th July 2019, 02:48 AM   #467
xrk971 is offline xrk971  United States
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
There are more SLBs left in case anyone is interested. Great PSU for typical 25w Pass Class A amps like M2 or M2X, F3/F4/F5/F6/Aleph etc, or even USSA5, Hiraga, JLH. Certainly Alpha 20, Alpha BB, MoFo, etc.
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Old 17th July 2019, 06:00 PM   #468
evanc is offline evanc  United States
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
Boards arrived and look great. Thanks to all for the great work
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Old 20th July 2019, 01:03 PM   #469
evanc is offline evanc  United States
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The SLB (Smooth Like Butter) Active Rect/CRC/Cap Mx Class A Power Supply GB
Good morning from the hotter than hades east cost of USA.
I have my SLB boards mostly populated and have a question concerning the bulk CRC caps. Would 22,000 uF be ok to use? I have a stock of them that I would like to press into service. If these are ok I may just have a pair of aleph j amps running this weekend.
Thanks,
Evan
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Old 20th July 2019, 01:19 PM   #470
jhofland is offline jhofland  United States
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They will work, assuming they fit the lead spacing. The only concern is that there will be higher ripple currents and they may get too hot. Mostly of concern for the first caps right off of the rectification.
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