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Old 5th May 2006, 11:45 AM   #1
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Default Ultimate shunt regulator

I'm going to build ultimate shunt regulator. I used TL431 so far, but I'd like to build something better. I will use low noise voltage reference source,lowpass filter,error amp and reg transistor. So, what do you think about this topology and do you have any suggestions for error opamp and for reg transistor?
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Old 5th May 2006, 12:06 PM   #2
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Max input voltage, max output voltage, max current?
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Old 5th May 2006, 12:11 PM   #3
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Rather low voltage and low max current- for supply DAC and solidstate gears:so max current probably 100mA.
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Old 5th May 2006, 12:53 PM   #4
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"Rather low" how much is that?
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Old 5th May 2006, 01:35 PM   #5
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Max input voltage:24V Max output+-)15V;5V.
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Old 5th May 2006, 04:35 PM   #6
AndrewT is offline AndrewT  Scotland
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Hi,
have a look at Wenzel's site http://www.wenzel.com/index.html

Kaneda did one.

I have a pdf of a discrete version from this forum, no reference unfortunately.

Walt Jung did one in '69.

There are bound to be others if you search.
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Old 5th May 2006, 05:07 PM   #7
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Quote:
Originally posted by AndrewT


I have a pdf of a discrete version from this forum, no reference unfortunately.

Is it this one?

http://www.diyaudio.com/forums/attac...amp=1139437025
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Old 5th May 2006, 05:22 PM   #8
AndrewT is offline AndrewT  Scotland
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Well done Apara.
That's the one.
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Old 5th May 2006, 07:16 PM   #9
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It looks geat, nice current source, but it's too complicated I think, we can replace transistors error amp with fast opamp, because in my opinion implementation and PCB layout is one of the key to build fast and ultimate regulator,so do you recommend any type of opamp?
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