Electric Mousetrap

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I made this electric mousetrap to help Silverfish and others who are trying to build an electronic parachute release timer. The salient points about the picture are:

Not shown in the picture is the capacitor I used - a 1000uf 16 volt electrolytic capacitor is paralleled with the 9-volt battery to provide additional peak current capability - without this the trap won't trigger.

Advice about using a transistor to trigger the trap

A circuit, and a few words to the wise:

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