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

Audio Mixer with 2N3819
Electronic-music
bcd diagram
AM Transmitter
Msp430c112 Irda Sir Encoder/decoder
TPA3007D1 Mono Medium Power Filter-Free Class-D Audio Amplifier
DC servo motor circuit design using A3952S motor driver
RC (Remote Control) Switch
RAZOR SHARP CW FILTER
Metal detector 8
Constitute a CMOS circuit time adjustment of a spot welder



Top