110V/220V AC Voltage Automatic Switch-over Circuit

Published:2011/6/22 9:52:00 Author:Michel | Keyword: 110V/220V, AC Voltage, Automatic Switch-over, Circuit | From:SeekIC

The picture is 110V/220V AC automatic switch-over circuit.When input AC voltage is 110V,charging voltage of the voltage test circuit's capacitance C3 is lower than voltage regulator tube VD6's stable voltage,V2 and thyristor VS2 shuts off ,VS1 conducts via R3 and VD2's trigger.Besides,diode VD3 is anti-paralleled with VS1 thus the latter level rectifier circuit works normally.C4 charging voltage is higher than V7 and VS2 conducts when the input voltage is 220V.As a result,None of current flows through VS1's gate level and the switch keeps off condition.The latter level times voltage turns to half wave rectifier circuit.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/110V_220V_AC_Voltage_Automatic_Switch_over_Circuit.html

Print this Page | Comments | Reading(3)