This traditional crystal oscillator configuration can use any CMOS gate configured as an inverter. R1 has values from 1 to 5 M ohm and R values around 10 k.
This circuit was found in a 90s Popular Electronics. The circuit uses components from that time,...
This circuit simulates a diode whose characteristics can be adjusted with a trimpot. The circuit is...
This circuit is a modification of the previous one, also found in the July 1995 Electronics Now...