Balanced Modulator MC1594 (CB14588E)

This circuit is from the Motorola Linear Databook from 1990. The integrated circuit used is uncommon today.

Clef Generator (CB827E)
This circuit produces a clef sound when a pulse is applied to its input. The damping effect is...
High frequency VCO (CB20604E)
This circuit can generate signals up to 100 kHz. Found in documentation from the 1980s, it makes...
Colpitts Crystal Oscillator (CB19355E)
The crystal used in this oscillator can have frequencies up to 30 MHz or more, depending on the...