The circuit in the figure is an amplifier with gain 10 for alternating signals using the 741. The circuit is from an article in the Radio Electroics magazine of May 1989.
This circuit was obtained in an Electronics World of 1969. It is a crystal oscillator with a 100...
This circuit, shown in the figure, consists of a variable gain amplifier with differential input...
This circuit was found in the July 1992 Radio Electronics magazine. Sensitivity adjustment is made...