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Old 12th January 2012, 08:37 PM   #1
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Default +/- 70V shunt reg

Hi
i need a +/- 70V shunt reg. for my brand new Holton HPA-nxV300rev2 (Anthony has added separate input-driver voltage with rev2)
im looking for a existing design or a design that is possible to mod to reach 70V

looking for design, drawings, boards, kits or finished parts.

Any suggestions?
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Old 13th January 2012, 05:45 PM   #2
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no ideas?
could possibly try to modify the: "simplistic shunt regulator" if the right component are present,
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Old 13th January 2012, 05:48 PM   #3
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The TL431 plus BJT´s or MOSFET´s (power MOSFET´s) are quite fine and easy to build.
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Old 14th January 2012, 04:15 PM   #4
AndrewT is offline AndrewT  Scotland
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Choose one of the various Salas Shunt Regulators to suit your voltages.
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Old 14th January 2012, 07:26 PM   #5
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Quote:
Originally Posted by AndrewT View Post
Choose one of the various Salas Shunt Regulators to suit your voltages.
Yepp , need to trawl thru some more pages to find one that suits my voltage,
i,l keep on reading.

P.
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Old 14th January 2012, 07:33 PM   #6
Salas is online now Salas  Greece
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Use 2 SSHV1 with R4=43K configured like below, only use proper secondary ratings and substitute the chips example for shunt regs:
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Old 14th January 2012, 07:40 PM   #7
Salas is online now Salas  Greece
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Like this:
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File Type: jpg PSU 2 x Positive.jpg (78.0 KB, 209 views)
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Old 14th January 2012, 10:44 PM   #8
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Thank you,
i guess the SSR1.1 is limited to 45V as per spec?
i have ordered 2
SSR1.1 for other application on the GB that ends tomorrow (or today)

P.
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Old 15th January 2012, 02:26 AM   #9
Salas is online now Salas  Greece
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Yes, limited.
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