Crystal Colpitts Oscillator (CB20665E)

This oscillator was found in Radio Electronics from the 90s. C1 and C2 have 2,700 pF and the inductor is 7 uH for a frequency given in the table.

S-meter (CB1405E )
The S-meter is signal strength meter, coupled to telecommunications receivers to indicate the...
Operational Connected Optocoupler Shield (CB16018E)
This circuit is suggested by Motorola, making it possible to use an optical coupler of type 4N26...
Dynamic Analyzer (CB12833E)
Dynamic analyzer is another name given to a signal follower or signal chaser. This circuit is from...