Broadband Balanced Mixer MC1556G (CB14563E)

We found this circuit in Motorola's Linear Databook in 1990. The integrated circuit used is no longer common today.

Telegraphy Practice Oscillator (CB18171E)
This simple oscillator appears in several projects on this site, coming from various publications and...
Automatic night light (CB6860E)
Found in an 80's Hands On Electronics, this circuit turns on a light when it gets dark and goes...
4018 Digital Sine Wave Signal Generator (CB25916E)
This digital CMOS circuit generates sinusoidal signals from a 10 kHz rectangular signal. The...