The cut-off frequency of the circuit shown in the figure is 750 Hz, with the components used. The circuit applies to almost any operational amplifier and the power supply must be symmetrical.
This interesting oscillator was obtained from an old documentation. In principle any 106 series SCR...
This simple charger has no charge indication or other features of a more sophisticated design. It only...
This circuit is a traditional configuration with the 741 Operational Amplifier and its gain is...