The circuit shown is from Motorola's 1990 Linear Databook. Components are not currently common. An equivalent can be used for the transistor.
Found in an Electronics Now from the 90s, this application uses an integrated circuit from the...
This circuit is suitable for low impedance m icrophones. Gain is given by the 2M2 resistor. This...
In the figure we have a solar power source for experiments with this type of energy. The cells must...