Tuesday, September 25, 2012

Variable Voltage / Current PS

Variable Voltage / Current PS


 

Variable Voltage / Current PS

 


This regulated power supply can be adjusted from 3 to 25 volts and is current limited to 2 amps as shown, but may be increased to 3 amps or more by selecting a smaller current sense resistor (0.3 ohm). The 2N3055 and 2N3053 transistors should be mounted on suitable heat sinks and the current sense resistor should be rated at 3 watts or more.
http://www.hqew.net/circuit-diagram/Variable-Voltage-$2f-Current-PS_11382.html

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