This circuit was found in old documentation, however the components used are common today. The selection of times is done by switch and the 556 consists of a double 555.
This integrated circuit made it possible to build simple radios with few external components. It...
This circuit produces 1 kHz square signals using the CMOS IC 4070. The frequency is given by the...
The circuit bellow uses two NPN transistor to drive heavy loads up to some amperes. The maximum...