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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: 2 pin flasher unit
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Fri, 12 March 2004 02:14
 
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funny you should mention this, i pulled one apart the other day 
mine was connected to the poer IN to the switch, and the switch determines which indicator lights up.
basically, inside is a bimetallic strip which forms a switch. power goes thru this strip which heats up and then bends and opens the switch (like a thermostat bimetallic switch for airconditioner?) the strip is thin, so it cools down quickly, and then flicks back and closes the circuit again.
the top one of these
if a globe blows and shorts, more current goes thru the flasher unit, and it will have shorter on periods. if a globe is totally blown, then less current goes thru and it stays 'on' for longer.
hope this helps 
Cya, Stewart
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