Video buffer (CB7286E)

This circuit was found in an Electronics Now of the 90s. It is intended for amplifying composite video signals, like those used in analog TV.

Motion Detector (CB6662E)
This Philips circuit of the 70's makes use of components of the time. The DZD40 is an uncommon...
AC and DC Full Wave Rectifier LM741 (CB25221E)
This circuit with two operating modes was found in the September 1989 issue of Radio Electronics...
Dial Tone Generator (CB5984E)
This circuit is from an old documentation making use of a 3,579,645 MHz analog color television...