ive built this psu as per the schematic,the issues i have are,the output is 30v with the voltage pot fully ccw,if i turn the current piot almost fully ccw the output drops to 0 with the led on,if i turn the current slightly cw it oscillates from 0v to 30v about every 3 seconds,the led flashes in time with this also,im using mc34071 opamps ,the only thing i havent changed is d7,its stil the 5.1v zenner,q2 is a bd137 and im using 4x 2n3055 pass transistors with 0.1r emitter resistors,any ideas on whats causing this wierd behaviour?,cheers m3vuv.
It seems to me that you can set a slider rheostat to control
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hyland 0-30v psu output osillates
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It seems to me that you can set a slider rheostat to control