JFET amplifier stage (CB7523E)

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

Negative Voltage Generator with the 555 (CB12324E)
This configuration can be found in other articles on this site. This was obtained in 1998...
Sensitive Phototransistor (CB14653E)
In the figure we show how to polarize a phototransistor to obtain sensitivity. The circuit is from...
5 to 15 V power supply with the 7805 (CB5877E)
This compact power supply can be used on the workbench for up to 1 A load. The transformer has 1 A secondary...