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Subject: Re: Designing a circuit for oscillating vehicle headlights

Date: 06/06/02 at 8:41 PM
Posted by: Russ Kincaid
E-mail: russlk@yahoo.com
Message Posted:

In Reply to: Designing a circuit for oscillating vehicle headlights posted by Heresy on 06/05/02 at 10:57 PM:

The resistors are low power & not critical. Use a 16 volt tantalum capacitor. I would reduce the 1k in the transistor base circuit to 100 ohms, otherwise the relay might not turn on. Use a Radio shack relay, 900-2394. The resistance of the coil is 80 ohms so it could draw 150 mA (I=E/R) of current. Most any NPN will work, the 2N2222 is good. The circuit shown for alternating headlights is not correct: Connect power to the swinging arm and the headlights to the NO and NC contacts.

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