This circuit generates rectangular signals from 2 Hz to 20 kHz using an operational amplifier. The circuit is from 1984 Radio Electronics. The power supply must be symmetrical.
This circuit is from 1990 documentation. It can be implemented with BC548 transistors instead of...
When you speak into the microphone of this circuit, the sound produced in the speaker resembles a robot...
This circuit uses an operational amplifier that is no longer on the market but can be implemented with a...