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Relay driver using ne 555



This circuit is utilized to drives transfers of 24 and 18 VDC from a 12 Volt power supply. The essential circuit on the IC NE 555 clock and utilize this circuit with practically any NPN or PNP power transistor.



transfer driver

Parts:

Resistor

R1 = 47K

R2 = 10K

R3 = 56R

Capacitor

C1 = 0.01uF

C2 = 0.01uF

C3 = 0.001uF

C4 = 0.1uF

C5 = 50uF

Transistor



Q1 = TIP29 , TIP120, 2N4922, TIP61, TIP110, or 2N4921

Q2 = TIP30 , TIP125, 2N4919, TIP62, TIP115, or 2N4918

IC

U1 = NE555


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