Electronic alarm circuits manual

Electronic alarm circuits manual

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12V (via ignition switch ) The action of the circuit is such that the relay is normally off, but turns on when the voltage on the ... Relay-output low-fuel-level alarm, positive-ground Figure 7.1 Precision d.c. over-voltage alarm, covering 5 V upwards.

Title:Electronic alarm circuits manual
Author:R. M. Marston
Publisher:William Heinemann Ltd - 1988-12


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