The simplistic Salas low voltage shunt regulator

[Salas]

Originally Posted by Ekkeri

Thanks.. Like these:
Digi-Key - 160-1130-ND (Manufacturer - LTL-4233) ?

I think MUR120 will be easier fit to the board. Is there any other difference between MUR105/110/115/120 than the voltage rating? There are mainly ON Semiconductors in the Digikey, and the price seems to be about the same.

The LEDS look OK. The MURs are different for reverse voltage by model yes. Use at least 4 times your rectified DC value for that rating in a full bridge per diode.

[Salas]

Originally Posted by claudio

Yes, I will include remote sensing.
About the zener Vref, I intend to use the original schematics.
Regarding preamplifier PSRR, my intention is to use both world.....

Will those be symmetric +/- shunts, or just single polarity?

[claudio]

Originally Posted by Salas

Will those be symmetric +/- shunts, or just single polarity?

Single polarity.

[AndrewT]

Originally Posted by wheezer

That size cap, or any in x.00uf on AC mains is dangerous............ If you energize it at the peak of the cycle it can explode.

an X rated cap will not explode when connected across the mains.

[AndrewT]

Originally Posted by disco

......... time it takes to discharge 10uF over 100 ohm

the RC time constant is R*C
=10*10^-6 * 100 = 0.001s = 1millisecond.

As a rough estimate, the charge remaining in the capacitor ~1% after 5 RC periods.
I would guess that in 10ms after pulling the plug, the charge in the capacitor is virtually unmeasurable by any of your instruments.

[Thomas_2-love]

Salas, any word on your v1.2? Can't help being curious...

[HiFiNutNut]

Originally Posted by claudio

I would like to ask you if you compared the first (ISL9R460) and II (FFP04S60S) series. I use the older one, and comparing it with the II I found a better S value but higher Cj at lower Vr and higher Qrr.

I took the time to read both datasheets a minute ago. You are right.

So the older Steath ISL9R3062 (this is what I have got) has better soft reverse recovery characteristic, while the newer Steath II has faster recovery.

Since we are not using them in switch mode supplies, better soft recovery is preferrable to fast recovery. I am happy that I have got the Steath, not the Steath II.

[RCruz]

Originally Posted by AndrewT

an X rated cap will not explode when connected across the mains.

I believe this to be a good reading when we feel the need to use big caps across mains.... acoustica.org.uk: shocking!

Ricardo

[Salas]

Originally Posted by Thomas_2-love

Salas, any word on your v1.2? Can't help being curious...

Its in beta preparation phase by third parties.

[Ekkeri]

Originally Posted by Salas

The LEDS look OK. The MURs are different for reverse voltage by model yes. Use at least 4 times your rectified DC value for that rating in a full bridge per diode.

Thanks. So for 12VAC 70V at least, so MUR105 (50V) isn't enough. Would it be better to use PCB transformers or toroid?