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Does such a component exist?

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action_owl

New Member
Let's say I have a switch between a small motor and its powersource,
I need that switch to be turned on whenever it recieves and audio tone and I need it to turn off whenever the tone stops, how could I accomplish this?

basically:
I need the switch to be on when it recieves the tone and to turn off when the tone stops

thanks
 
Last edited:

Torben

Well-Known Member
What are the voltage and current demands of the motor?

What frequency is the tone?

What is the voltage of the tone?


Torben
 

Externet

Well-Known Member
Read the data sheet for a NE567 ; should work well by driving a relay trough a transistor.
 
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