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.

Ultrasonic Doppler Receiver (CB8732E)
This is the receiver for the previous circuit, also found in 90s Radio Electronics. The circuit...
Automotive Tachometer with the 555 IC (CB1419E )
This circuit from a 1978 American publication is used on vintage vehicles that still have contact...
Darlington Push Pull Stage (CB6971E)
This circuit was suggested by Popular Elecronics from the 90's. The circuit has high input...