The frequency of this circuit, for the indicated components, is 1 kHz. Other operational amplifiers can be used, and the power supply must be symmetrical.
The configuration shown in the figure uses two NPN transistors activating the load when the input...
This circuit was found in American documentation from the 1980s. Its purpose is to use a 170 MHz...
This circuit protects galvanometers that are excited by low impedance amplifiers. The circuit is...