Suggested by a 1968 Motorola power semiconductor manual, this circuit uses a special transformer and transistors from the era. The frequency is 60 Hz.
One 40108 Schmitt inverter or one 4093 gate can be used as a half monostable to be triggered by...
This circuit is from an Electronics Now from August 1995. The triac is according to the load that...
This Siliconix circuit was found in a 1980s documentation. The coil consists of 18 turns of 22...