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

Mini-box 2W Amplifier
Class A Headphone Amplifier II
Square wave generator III
24 Second Shot Clock Circuit
avr Control 5V buzzer using mcu and a single 5 V power supply
high voltage circuits
5 Minute Digital Clock
Midnight Security Light Circuit Schematic
Multi-Purpose Booster and Buffer
PIR Sensor Circuits
SOIL MOISTURE METER
A little glowing Halloween ghost
Digital triac circuit diagram
Nine one-way operation of the dynamic braking circuit
Incandescent Yeonsu electronic controller 1



Top