Serial Adjustment Stabilized Voltage Supply Circuit

Published:2011/6/4 22:28:00 Author:Michel | Keyword: Serial Adjustment, Stabilized Voltage, Supply Circuit | From:SeekIC

The right picture is adjustable stabilized voltage power which uses crystal triode to output voltage.This circuit adjusts the output voltage by changing high-power crystal triode, tr1's voltage of load series. The output voltage,Vout,depends on A'svoltage,namely,Vref+VBE2.In the right formula,Vref(5.1V)is the voltage of voltage regulator diode,VBE2 is the emitter-to-base voltage of crystal triode Tr2,VR1 is variable resistor.Variable range of VR1 is 0～5kΩ so the variable range of output voltage is 7.6～12.8V.When VR1 sliding parts contact undesirable, the output voltage will be a minimum voltage.



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