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.
Found in a 1964 magazine, this is a small headphone amplifier from 500 ohms to 10 k ohms (magnetic...
In the figure we have the way to use an operational amplifier on a higher voltage source than it...
In the figure we have the receiver of a sequential remote control operating at a frequency in the range of...