Saturday, February 26, 2011
IRF530 Fet Flasher Circuit
This is a simple fet flasher circuit that can be used for flashing 12V lamps especially that is used on automobiles.The flasher circuit is based on transistor BC557 and MOSFET IRF530 where the Q2 provides the necessary drive for the lamp.Any number of bulbs can be flashed using this circuit provided that the total load must not exceed 42 Watts. Circuit of this kind are particularly suited for road, traffic and yard alerts and in all cases where mains supply is not available but a powerful flashing light is yet necessary
Flashing frequency can be varied within a limited range by changing C1 value.
List Componet
R1 : 6K8 R2 : 220K R3 : 22K C1 : 100µF/25V C2 : 10µF/25V D1 : 1N4002 Q1 : BC557 Q2 : IRF530 LP1: 12V/21W Car Filament Bulb SW1: SPST Switch (3 Amp minimum)
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