This circuit, for frequencies up to 100 kHz, was found in American documentation from 1970. The circuit can serve as a reference for projects with modern equivalent components.
Found in Elektor Electronics from the 90s, this circuit can generate signals from 1 kHz to 9 MHz,...
Using any general purpose or medium power transistor such as the BC558 or BD136 it is possible to light a...
Pink noise is used in musical instruments, testing of telecommunications equipment and other...