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Audio signal activated relay
STDAudio signal activated relay
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:Public Domain
Creation time:2022-06-26 06:54:35Update time:2022-06-28 05:56:58
Description
The circuit allows the activation of the relay when it receives an audio signal, the activation is delayed by the value given to the capacitor C2, with a present value of 220uF it is about 90 seconds. The value can be increased with higher C2 values for example 330uF, 470uF.
Design Drawing
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