Solid state relay (CB8518E)

This circuit was found in a 90s Popular Electronics. Both the coupler and the MOSFET can be of any type.

Inverter for automotive use (CG25728E)
The inverter circuit shown in the figure provides a voltage of around 110 V with a rectangular waveform...
100 kHz to 1 MHz Oscillator (CB12815E)
This circuit can generate signals from 100 kHz to 1 MHz depending on the L1 coil. For the medium...
Notch and Pass Filter LM3900 (CB4041E)
We found this circuit with an operational transconductance amplifier in the Motorola Linear...