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The simplistic Salas low voltage shunt regulator
The simplistic Salas low voltage shunt regulator
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Old 5th September 2017, 12:27 PM   #7701
triode_al is offline triode_al  Netherlands
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Quote:
Originally Posted by RCruz View Post
Slowly disappears from the scope screen,,,,,

So the nasties are not from the shunt but being picked up from the environment.

Anyway, I just tamed the simulator.

It all depends on the termination zobel.

Too much resistance and the thick line appears.

Too low capacitance... the same...

Too high capacitance and the results are even worse.

What I need now is a good way to determine the exact values for the zobel, minimizing the cap value.

Below 15uF, with any resistance in the zobel, the thick line appears.

fixing to 15u I found that I can use 0.05ohms to get a perfect picture.

How can I determine the best zobel values ?
I am tackling this problem too now in time.
The sim does not work. It needs the following component in the library, for ".include RC-MODELS-2.txt"
Can you supply that?
thanks in advance albert
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Old 5th September 2017, 12:29 PM   #7702
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Quote:
Originally Posted by rhythmsandy View Post
can we use BF256 instead of 2sk170 jfet? for the shunt regulator?
No
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Old 5th September 2017, 04:58 PM   #7703
cozycactus is offline cozycactus  Israel
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The simplistic Salas low voltage shunt regulator
Hello Salas, why you don't like regulators with opamp?
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Old 6th September 2017, 12:15 AM   #7704
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Its not I don't like something else, its about the hobby. Creating rather different and relatively simple stuff that we diyers can tweak to the core.
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Old 14th September 2017, 01:34 PM   #7705
sergiog is offline sergiog
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hello salas sorry, you can indicate which schematic and in what post can i find the last version of the "shunt schematic" adapted fo the Pearl 2 phono +/- 24V power supply. Thank you in advance
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Old 14th September 2017, 02:15 PM   #7706
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Hello. I have seen some builders using the SSLV1.1 for that phono. Its a dual adjustable.

SSLV1.1 builds & fairy tales
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Old 14th September 2017, 02:27 PM   #7707
merlin el mago is offline merlin el mago
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Salas the reg. is working fine with the new Amanero USB-I2S board.
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Old 14th September 2017, 03:00 PM   #7708
Salas is offline Salas  Greece
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The simplistic Salas low voltage shunt regulator
Nice to know Felipe
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