The integrated circuit used in this amplifier is uncommon today, since the project is from the 90s. The power is 24 V, and the gain of the circuit is 40dB. The input resistance is 1 M ohms.
This circuit was published in an Italian magazine Radio Elettronica in February 1976. The...
This circuit of an Electronics Now from the 90's produces an intelligent direction signal that has...
Found in Radio Electronics from the 90s, this circuit uses a 741 and can be changed to other...