Found in an Electronics World of 1968 this circuit can use any SCR and diodes depending on the load. The circuit is full wave and the unijunction can be 2N2646.
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...