Using the NE5205 integrated circuit this circuit was found in the May 1987 issue of Radio Electronics magazine. It can amplify signals up to 450MHz.
This relay circuit protects against accidental inversion of input polarity. The circuit was...
This 80's National Semiconductor circuit uses an era integrated circuit and symmetrical 5V power...
This circuit was obtained from Popular Electronics from March 1967. The transistor used is from...