Tone ringer II


Posted on Sep 25, 2012

The XR-T8205 Tone Ringer is primarily intended as a replacement for the mechanical telephone bell. The device can be.powered directly from telephone ac ringing voltage or from a separate dc supply. An adjustable trigger level is provided with an external resistor.


Tone ringer II
Click here to download the full size of the above Circuit.

The circuit is designed for nominal 15 volt operation.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Stand-by Battery Charger
Automatic Fader Circuit
british police car siren circuit
equalizer circuit
Thyristor Tester
Zhichuan Electronic Circuit
Thermocouple cold junction compensator AD594 595 centigrade thermometer circuit diagram
Voltage - frequency conversion circuit
Broadband 100MHz ultra-wideband DC amplifier
EPSON PHOTO 830U printer power circuit



Top