This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies to virtually any junction FET.
Found in a 1967 publication by General Electric, this SCR circuit generates voltages of 120 VAC at...
I found this simple circuit an English magazine from 1984. The circuit can be easily assembled by simply...
This circuit also detects IR, providing LED indication. The circuit is used to indicate humidity in...