Stereo FM Transmitter (CB8459E)

This circuit was found in a 90s Radio Electronics. The FM encoder or multiplexer is an uncommon component today.

100 MHz Butler Oscillator (CB9647E)
This oscillator with emitter follower was found in an American documentation from the 80's. The...
Bidirectional Current Monitor (CB5226E)
We found this circuit in 2005 Linear Technology documentation. The integrated circuit is LT1787...
High Stability Sinusoidal Generator (CB14362E)
The circuit is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The...