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

RF 433MHz - 3 channels remote control
audio Can I use a PNP Transistor with an Electret Microphone to get an non-inverting output for my Arduino
overtone crystal oscillator
Telephone line monitors
PIC16F630 14 Pin FLASH Based 8 Bit CMOS Microcontrollers
Power MOSFET Bridge Rectifier
Audio Power Amplifier
Current sensing of the rails circuit diagram
Free homemade LED lamp circuit diagram



Top