Found in a 90’s Popular Electronics, this circuit can use other power MOSFETs. The transformer has a primary according to the desired continuous voltage at the output.
In the figure we show a trigger circuit for triacs with a unijunction transistor. The circuit is...
The oscillator in the figure has its frequency determined by the crystal. The indicated value is...
This circuit was found in the November 1959 Radio Electronics magazine; The circuit generates a...