This circuit was obtained from Popular Electronics from June 1978. It doubles the input DC voltage. Obtained current is very low, serving only for polarization circuits.
This 3-transistor timer was found in the January 1994 issue of Electronics Now magazine. The...
This Dimmer circuit for incandescent lamps was found in an English documentation. The input...
With this circuit we can use a high impedance source to excite a low impedance output. The input is...