This third-order Butterworth filter was found in American documentation from the 1980s. Formulas for component calculations are attached to the diagram.
Two potentiometers mounted at right angles, so that they can be operated by a lever, form a very...
The purpose of this modified astable is to make the initial pulses have the same duration as the...
This circuit was found in an American 80's circuit board. The components used are current except the...