Sciencemadness Discussion Board

Laboratory power supply constant current

Mildronate - 19-11-2012 at 00:50

I had made laboratory power supply 270w 25V with 270w transformer (recoiled), 50A diode bridge, lm317 and 3 pararell TIP35C transistors, Anbody can sugest good and easy way to make constant current regulator for this project? Here is bad qulity pictures :) schematic i will post later.

Pastaisitais_baroklis_2.JPG - 93kBPastaisitais_baroklis_3.JPG - 82kBPastaisitais_baroklis_4.JPG - 87kB

WChase501 - 9-10-2014 at 14:40

Pulse width modulator on the line side, used to control output current.

Metacelsus - 9-10-2014 at 15:25

If you don't mind dumping power as waste heat, you could do something simpler, like:


current limiter.PNG - 5kB