Self-biasing JFET circuit (CB25563E)

This JFET amplification stage was found in the April 1993 issue of Electronics Now. The input impedance is 10 Megohms.

Pulse Compressor and Expander (CB6658E)
Found in a 1967 Electronic Design, this transistorized circuit compresses and then expands a pulse....
Silencer (CB4197E)
This squelch is activated by its own noise, acting automatically. It is used in communications...
MA1026 Portable Digital Clock and Thermometer (CB24684E)
This is the battery-powered version of the previous circuit. The circuit is from the same Radio...