This game with digital logic circuits was found in the December 1976 issue of Radio Electronics magazine. The circuit includes the power supply driving a set of LEDs.
This regulator type series for charging batteries from solar panels was found in a technical...
This circuit is from an English publication from 1965. The transistors used are rare, however, they...
This good quality stereo amplifier was found in a Japanese publication from the 1960s. The circuit...