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Super
Sensitive Voice
Activated Relay Switch - Assembled & Tested
The
design of this circuit is based around an Integrated Circuit that
ensures very high sensitivity. Any sound will be captured by the
microphone and will activate the output relay which will remain
activated while there is sound. The relay can handle loads of up to 3A.
It has many applications such as controlling a tape recorder in seminars
and classrooms (the recorder will start recording only when the speaker
starts speaking).
Specifications:
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Supply
voltage: 12V DC / 100mA
Output relay
handles up to 3A
Adjustable
input sensitivity
Includes
sensitive microphone
ON mode LED
indicator
PC board
dimensions: 3.75" x 2.05"
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