JFET amplifier stage (CB7523E)

This circuit was found in a 1982 Maplin documentation. The configuration applies to almost any JFET.

Current Monitor (CB5137E)
This circuit was obtained in the manual of the used integrated circuit. Equivalents may be used...
UV Sensor with UVTRON Tube (CB25942E)
The UVTRON tube is an ultraviolet radiation sensor. In this circuit from Radio Electronics from...
Darlington Push Pull Stage (CB6971E)
This circuit was suggested by Popular Elecronics from the 90's. The circuit has high input...