This circuit is from the 1983 Intersil Databook. The display is plasma and must be excited by a high voltage circuit. The components used in this configuration are not common today.
This simple timer uses one of the six inverter ports on a CMOS integrated circuit. Rx and Cx...
This circuit was found in an American 1990s documentation. It can directly trigger a triac when...
The purpose of this circuit found in the September 1977 issue of Radio Electronics magazine is to...