This Wien bridge oscillator circuit uses a Texas Instruments 709 amplifier. It was found in an article in the September 1972 issue of Radio Electronics magazine. It is powered by a 24 V voltage.
This 9-bit DAC circuit was found in the RCA CMOS integrated circuits manual of the 1970s. The...
This circuit, found in an American publication from the 1970s, produces an audible tone in a...
This simple battery charger circuit was found in a Radio Electronics from June 1959. The resistors...