This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the hard-to-obtain component of our day. It is for reference only.
This circuit, obtained from a 1965 magazine, can still be assembled using some modern equivalent...
This circuit comes from an English publication of 1976, consisting of an experimental touch key....
This self-oscillating voltage conversion circuit was found in an American 1980s documentation. The MOSFET...