This circuit from the 1980s uses an operational amplifier that is uncommon today. The circuit can be designed with modern operators. The gain is 40 dB.
The frequency of this circuit is determined by the 100 uF capacitors. These components can be...
September 2017 - This new integrated circuit, which facilitates the design of PWM dimmers, can now be...
This circuit generates noise pulses for audio equipment probes. The circuit is from a 90’s 303...