I have a sound activated relay circuit, I would like to use this circuit to break the connection to a set of speakers from a stereo unit.
I need:
A relay on the speaker line that is always making a connection when no power is applied (so that the speakers are working)
Then when a signal is detected on the sound activated relay circuit, the relay on that circuit will send voltage to the relay in the speaker line, which should then switch and break the connection (so no speaker output)
Can I do this ?
Is there any special relay i need / how do i wire it up ?
Thanks for your quick reply
I have just been looking on www.maplin.co.uk but none of the relays on their site seem to state whether they are NC or NO, is there also another term used?
I someone could give me a part no from a UK supplier I would be very thankful
It will be running 12V and the speakers are std fit car speakers.
Thanks for your quick reply
I have just been looking on www.maplin.co.uk but none of the relays on their site seem to state whether they are NC or NO, is there also another term used?
You fix one connection to the common, and the other connection to either NC or NO - whichever you want, in your case NC. Where the actual contacts are depends on the particular relay, they are usually marked.
so what is the substitute load of your amp when it is disconnected from the speaker, or does the amp automatically turned off when it is disconnected from the speaker. :?