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.
This traditional oscillator uses two complementary transistors to produce low frequency signals....
In this application, the astable multivibrator comes into action only in the presence of an input...
This circuit uses a CA3140, an operational amplifier with FETs in the input stages. Equivalent can be...