Unican Security Systems, Ltd.

Joseph P Seemann

John H Conrad

In a vehicle having an ignition switch, headlights and a storage battery, a relay has its winding in series with the battery and the collector-emitter circuit of a transistor and has normally open contacts in a headlight energizing circuit. A resistance-capacitance time delay circuit, connected with the ignition switch, controls bias of the transistor. Hence the transistor conducts whenever the ignition switch is 'on' and for a short time after it is turned off; and while it conducts, the relay contacts are closed and the lights are energized.

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Ste. Julienne, Canada

Joseph P Seemann