The simplistic Salas low voltage shunt regulator

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All Mosfet shunts can go 5V lowest due to Vgs limits. Still no V1.2 has been tested at 5V yet. At 3.3V V1.0 has been used with a power BJT as a shunt element and 10R base stopper being the changes. Post 2402 is all you will need. That BJT is good up to 0.5A. See also.
 
absolutely, in the positive sense. without a doubt it s better than my sigma11. it powers both avdd and dvdd(digital and analog supplies). however, i m wondering how good is SS1.2 at supplying the digital portion...

I have Googled and found a sigma11 by AMB laboratories. If you are referring to that one, its a serous power supply. Has extensive technical documentation. You had no slouch of a reg before.
 
yeah i ve built a couple of the sigma family psus because it performs great, has great current capability, i can switch voltages from 36v to 5v when used with sockets, and finally because the designer offers great support and isnt after money.

i was wondering about the powering digital circuitry because i tried the ikoflexer-stormsonic 3.3v reg (http://www.diyaudio.com/forums/powe...ake-discrete-shunt-voltage-regulator-114.html) with for a clock and a receiver chip (just to see) and didnt get good results at all. i guess thats what happen when you use circuits not for the purpose it what intended to be used for.

i just wish a 3.3v SS1.2 could be made. i know someone earlier said he was going to experiment on this (fred?). maybe he could join in?
 
i was wondering about the powering digital circuitry because i tried the ikoflexer-stormsonic 3.3v reg (http://www.diyaudio.com/forums/powe...ake-discrete-shunt-voltage-regulator-114.html) with for a clock and a receiver chip (just to see) and didnt get good results at all. i guess thats what happen when you use circuits not for the purpose it what intended to be used for.

This surprises me. Something must have been wrong with the construction I think. I never built that circuit but it looked pretty good on paper and stormsonic had good results. What were the negatives?
 
with the clock i was hearing weird kind of echoes and for the receiver nothing was wrong but the performance was clearly better with the sigma or flea. i ve checked my wiring and everything seems fine. i m using bc560c for bc857, 2sk170bl for jbf862 and a mpsa18 for bfr92p. also i omitted c3. anyway, i ll do more testing.
 
on a side note: on SS1.2, i bypassed c2(vishay mkt but still) with a ft-3 russian teflon cap and the result TO MY EARS are quite stunning. now i dont know how it measure. but to me clearly it sounds quite a bit better. maybe it s not the right way to proceed but it might just be that the benefits that this cap brings outweight the drawbacks.
 
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