Switch voltage regulator circuit using 110V voltage doubling/220V alternating voltage input

Published:2011/11/30 21:45:00 Author:May | Keyword: Switch voltage regulator, 110V voltage doubling/220V alternating voltage input | From:SeekIC

This power supply circuit is shown in the diagram, input alternating voltage is 110V or 220V. When 110V alternating voltage power supply changesin the range of 85~132V or 220V alternating voltage power supply changesin the range of 170~265V, Sv=±1%. When load current change range is 10%~100%, Si=±5%. Output ripple voltage is ±50mV. S is 110V/220V alternating voltage option switch in the circuit, and it can bereplaced by cable jumper on printed plate. When S is closed, you can choose 110V alternating voltage input, at this time, rectifier bridge BR and resistor-capacitor components and parts R1, C1, R2, C2 make up voltage doubling rectifing circuit. When S opens, you can choose 220V alternating voltage input. In order to improve stability of voltage, you can add resistor R4 in output circuit, and the least load setted by it is 36mA.



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