I need to ring a phone that activates a loud ass horn. Phone has no audio ports. I'd be tapping into the 2 wires that connect from phone circuit board to the phone ring speaker.
Inside the handset, the 2 wires show .035-.045 VAC (probed with multimeter while the phone "rings") and connect to an 8 Ohm 2W speaker inside the phone. This 8 Ohm 2W speaker needs to be replaced with a very loud horn or buzzer.
-I purchased a generic 12VDC piezo horn. Need to feed it 12VDC when phone rings. That's all.
I'm stumped. Low signal relay? Some type of inline amp? I can solder a bit, and have only a very basic understanding of this stuff.
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like .03VAC to 12VDC?
Thank you
Take either (or the other) wire(s) of the speaker, and then measure the voltage once more.For accuracy, you should take two measurements: one using the meter set in AC mode. The other another using the meter in DC mode.
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need help electronic/relay problem phone horn
in Electronic Projects Design/Ideas
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Take either (or the other) wire(s) of the speaker, and then measure the voltage once more. For accuracy, you should take two measurements: one using the meter set in AC mode. The other another using the meter in DC mode.