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Help with Alternating 12 volt DC Headlight flasher "WIGWAG"

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gmcjetpilot

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Help with Alternating 12 volt DC Headlight flasher "WIGWAG"

The off the shelf versions for emergency vehicles are expensive and heavy, often in heavy potting. I want solid state.

Req:
12-14 volt DC
two 60 watt (about 4.5 amp each) halogen lights....
Flash about 50-100 fpm (flash per minute).... adjustable is good.

I am thinking of a 555 circuit may be? What transistor for switching? NPN, PNP, FET, MOSFET..... SCR seems good but once on switching off is a problem.
 
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mister_rf

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gmcjetpilot

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Thansks Mister_rf
The switches will be MOSFET! Good selection..... Appreciate it!
 

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