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.

Operational audio amplifier (CB21109E)
In the figure we have the basic configuration of an operational amplifier for audio signals. The...
Night light (CB6803E)
This General Electric circuit produces pulses of light only when light stops shining on the...
Two controls relaxation (CB9247E)
Found in an Electronic Design of 1964 this circuit has a control for the frequency and another for the...