Here is the variable dual lab power supply circuit.You can select voltage levels are 3V,5V,6V,9V,12,15V at 1A
and -3V,-5V,-6V,-9V,-12V,-15V at 1A, use IC LM317 (for positive volt) and LM337 (for negative volt), Controls Voltage Output by S2 For +Vout and S3 for -Vout.
The transformer is 2A size. And the both IC holds heat sink.
Read detail more in circuit.
Next ideas,if you want to other voltage in variable voltage form e.g. 4.5V,7.5V,13V etc. You can add the VR1 in adj pin of the IC1-LM317 and IC2- LM337 look like to power supply regulator 1_2V-20V and 3V-6V-9V-12V 3Amp With LM317T and 2N3055
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This entry was posted on Thursday, September 6th, 2007 at 11:45 pm and is filed under LM317, Power supply, Variable Regulator.
