HV REGULATOR WITH FOLDBACK CURRENT LIMITING


Posted on Feb 5, 2014

A TMOS MTM7N45 (Q2) is used as a series pass element in a linear high voltage supply that accepts +275-V unregulated and produces 250 V regulated with foldback current limiting. A 15-V zener, D1, provides the dc reference for operational amplifier U1, whose other input is obtained from a fraction of the output voltage. UI drives Q3, which drives t


HV REGULATOR WITH FOLDBACK CURRENT LIMITING
Click here to download the full size of the above Circuit.

he gate of Q2. Foldback current limiting is achieved by RI, R2, R3, R4, Q1, and D2. The formula to estab!ish the current "knee" for limiting is:




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

wireless FM bug
Tone burst generator
LED Electronic roulette
Voltage controlled amplifier
Low-Battery Indicator
Flashing Brake Light Circuit
Adjustable Regulated Power Supply 0-15V
Radio circuits built
Spark Gap Experiments
48v phantom microphone power supply



Top