+/- 70V shunt reg

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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?
 
diyAudio Chief Moderator
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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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