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.
Found in a 90's EDN, this circuit provides a current of a few tens of mA. The circuit can generate 15...
This second-order filter was found in a 1978 publication and can use common operational amplifiers like...
This tuned circuit was found in a 1966 Electronic Circuit Handbook. The transistor can be any...