VOLTAGE_DOUBLER

Published:2009/7/9 2:32:00 Author:May | From:SeekIC

This circuit drives relays of 24 and 18 Vdc from a 12-V power supply. Use this circuit with almost any pnp or npn power transistor.Parts: U1: NE 555 timer. C1 and C2: 50 μF/ 25 Vdc. Q1: TIP 29, TIP120, 2N4922, TIP61, TIP110, or 2N4921. Q2: TIP30, TIP125, 2N4919, TIP62, TIP115, or 2N4918.



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