Voltage Regulator Circuit With Output Of 34V/500mA

Published:2011/8/23 23:40:00 Author:Robert | Keyword: Voltage, Regulator, Output | From:SeekIC

The picture shows the voltage regulator circuit with output of 34V/500mA. This circuit's maximum output voltage is determined by the operational amplifier A1's power voltage. When A1 uses the NJM5532 operational amplifier, its power voltage would be ±22V. So the maximum output voltage could be 44V. If there is some surplus capacity, the maximum output voltage could be about 40V. The VS3 is a zener diode. Its stable voltage could be selected to be about a half of the power voltage (18V). The R7, R8 and RP1 make up the voltage-divider circuit for the output voltage. And it selects the resistance value according to the principle that the divided voltage would be equal to the VS3's stable voltage.



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