Crystal-controlled signal source


Posted on Dec 21, 2012

This general purpose signal source serves very well in signal-tracing applications. The output level is variable to more than 1 Vrms into a 50 O load. Almost any crystal in the 1 to 15 MHz range can be used. Ql forms a Colpitis oscillator with the output taken from the emitter. A capacitive voltage divider (across the 2.2 emitter resistor) reduces the voltage applied to the buffer amplifier, Q2.


Crystal-controlled signal source
Click here to download the full size of the above Circuit.

The buffer and emitter follower, provides the low input impedance necessary to drive 50 O loads.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Pulse generation by interrupting a light beam
Complementary AC power switching
Start-and-run-motor-circuit
One-shot-timer
Harmonic Generator
video amplifier circuit
Some interesting Projects



Top