This simple injector and signal follower employs a high impedance headset. Transistors can be of general use. The circuit is from old American documentation.
We found this circuit in factory documentation from the 70s. The operational amplifier is from...
This circuit is from a Radio Electronics from the 90's. The integrated circuit is from the time...
This circuit was found in an old American publication. It is valid for any operational. Formulas for...