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Automatic Porch-Light Control Circuit

2014-12-20 15:24  
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The automatic porch-light control circuit holds a triac on until a 4020 divider counts a number of 60-Hz powerlinc pulses. The circuit turns off a light after a predetermined time by using pins other than pin 3 of III. Various times can be set.
Automatic Porch-Light Control Circuit

Consult the 4020 data sheet for information.

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