Paul Whiteley does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Five years ago today, Boris Johnson announced that the government was taking the unprecedented step of ordering the country into lockdown. “Stay at home”, the nation was told – with no idea ...

What can you do with these parts? Perhaps the most common use is as an astable multivibrator or RC relaxation oscillator. In this role, an external resistor and capacitor set the time constant for ...

The basic switch is then extended with an electrolytic capacitor to make a simple time delay switch, and finally we’re shown how two such circuits combine to make an astable multivibrator and ...