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voltage reference circuit

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IamSmooth

Tue Nov 25 2008, 05:25AM

Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567

Let's say I have a rail voltage that can vary from 0 to 500v. How is it possible to make a circuit to provide a stable reference voltage as long as the rail voltage is above a certain value? Is there a name for this topology? I think this requires more than just a regulator chip.

Dr. Dark Current

Tue Nov 25 2008, 09:49AM

Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384

A regulator chip, with it's input clamped by a zener diode and connected through a resistor to your supply rail?

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