This circuit was obtained from an American documentation from the 80s. Integrated circuits are from that time and are not easy to find today.
This sophisticated sinusoidal audio signal generator uses a Wien bridge configuration with an...
This AC amplifier using the 741 operational amplifier uses a dual supply from 5 to 12 V. The input...
This circuit was found in the Spanish magazine No longer in existence, Mundo Electrónico, in a...