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Old 08-07-2009, 07:42 AM
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patrickt patrickt is offline
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Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
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Default How many electrons does it take to excite a voltage regulator?

Quote:
Originally Posted by trularin View Post
Gaz64 has a good inexpesive solution.
Two reasons why that might not be such a swell idea. 1) The idiot light circuit also feeds the the voltage regulator (through the filament or an optional resistor) in order to intiially excite it. If you add a buzzer circuit over on that side it may provide a better path to ground and the VR will not get initiated and the charging system will fail. 2) If there is sufficient current travelling through the filament (or the optional resistor) the buzzer might have a constant low level "zzzzzzzzzz" sound when the key is on, but the engine is not running.

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