The gain of this amplifier is given by the 120k resistor, which can be changed depending on the application. The circuit can also be designed based on other operational ones. The power supply need not be symmetrical.
This simple low power stage with output transformer was found in an American documentation. The transistor...
This circuit, found in a publication of the year 1968, uses a MOSFET at the input to increase...
The frequency of this astable depends on the capacitor that can be changed over a wide range of...