RE POWERED SIDETONE OSCILLATOR


Posted on Feb 6, 2014

A sidetone oscillator is a special audio oscillator that is turned on and off with the transmitter. The oscillator is rf-driven and bat-tery operated. It uses a 555 IC timer as an astable multivibrator. Keying is accomplished by applying a positive dc potential, developed from the rf signal, to the reset terminal of the 555.


RE POWERED SIDETONE OSCILLATOR
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Remote Control using DTMF
Add-on-telephone-hold-button
Mini High-Voltage Generator
Light-sensitive Alarm Project
Wein Bridge Oscillator using ic 741 op amp
High Current LM317 CV Power-Supply
MUTS Multi-Target Development System
PIC Frequency Counter with Frequency Lock
With triac light control lamp 1



Top