4093 Sine Square Converter (CB26335E)

Found in a Popular Electronics from the 90s, this circuit operates up to about 5 MHz input.

Hybrid H Bridge (CB11282E)
This shield circuit for controlling the direction of rotation of DC motors with current up to 500...
Protected Residential Alarm (CB18674E)
This alarm is powered by the power network, but it has a source that charges a battery that goes...
RS Flip Flop using Comparator (CB13103E)
A Reset-Set flop-flop capable of directly controlling a relay or other power load can be...