Programmable-power-supply


Posted on Dec 9, 2012

Many systems require one or more relatively low-current voltage sources which can be programmed tna few predetermined levels. The circuit shown above produces positive output levels, but could be modified for negative or bipolar outputs. Q1 is the series regulator transistor, selected for the required current and power capability.


Programmable-power-supply
Click here to download the full size of the above Circuit.

R1, Q2, and Q3 form an optional short circuit protection circuit, with R1 chosen to drop about 0. 7 V at the maximum output current. The compensation capacitor, C, should be chosen to keep the overshoot, when switching, to an acceptable level.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Speech Recognition Circuit
Bug Detector Circuit
Electrical Single Line Diagram-Part One
Crosswalk Pedestrian Signal and Homemade Controller
Avoid contact thermometer circuit
LM4911 without an output capacitor OCL power circuit
IC audio power amplifier circuit



Top