We found these circuits in a 90s Radio Electronics. In them, we have the way to turn a load on and off using pressure switches. The circuit can be used with other types of direct current load.
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...