Auto Ignition Cut-Off


Posted on Oct 25, 2012

Using an SCR/relay combination, this circuit can be made to cut off ignition, unless a positive voltage is applied to


Auto Ignition Cut-Off
Click here to download the full size of the above Circuit.

Hhe gate of the SCR. This is useful as an anti-theft device, because depending on hook-up, the car will not start unless a certain accessory or a hidden switch is closed.




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