This circuit is from the Texas Instruments operating amplifier manual. Any operational can be used and the font need not be symmetrical. Rf and Rg determine the gain of the circuit.
In the figure we have the typical configuration of a sinusoidal audio oscillator with twin-T. The...
This circuit that uses only common transistors can operate between 60 and 130 MHz, depending on...
This RCA / GE circuit from the 90s can be applied to any modern operational amplifier. The number...