The gain of this amplifier is given by the components indicated in the formulas next to the diagram. The power supply must be symmetrical and equivalent operational amplifiers can be used.
This circuit was found in the January 1989 issue of Radio Electronics magazine. The circuit sends...
This simple audio generator with the 741 was found in a 90sTexas Instruments. The circuit...
In fact, this 1994 circuit uses a scale of LEDs to indicate the pulse rate applied to its input....