closing a relay with an audio signal

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nizaryousri

Member - Posts: 2

Joined: December 30, 2011

Location: Egypt

Posted: December 30, 2011 at 10:36 AM / IP Logged

is it possible to close a 5 volt jzc-23f(3124) relay using an audio signal coming from a bluetooth earpiece for example ?

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i am an idiot

Platinum - Posts: 13,670

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: December 30, 2011 at 11:28 AM / IP Logged

not without an op amp and some more circuitry.

http://www.seattlerobotics.org/encoder/200003/larryb.html

http://www.discovercircuits.com/H-Corner/audio-signal.htm

http://search.yahoo.com/search;_ylt=At.nCUTWDKgrk9iVbJjNCvKbvZx4?p=audio+sensing+circuit&toggle=1&cop=mss&ei=UTF-8&fr=yfp-t-701

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nizaryousri

Member - Posts: 2

Joined: December 30, 2011

Location: Egypt

Posted: December 30, 2011 at 2:05 PM / IP Logged

Thanks a lot! Very informative.

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howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: December 30, 2011 at 5:22 PM / IP Logged

Which is why car kits such as Parrot, Nokia etc are recommended with a 0V output on call initiation to mute radios etc.

At the moment car kits are compulsory in the EU, North America, Australia, New Zealand and Israel. Egypt will follow.

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closing a relay with an audio signal

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