This circuit was found in a Philips documentation from 1967. The circuit uses components from the time that have current equivalents such as BC548 for transistors.
The frequency of this circuit is approximately 1 Hz. Whenever the output is at low level, the LED...
The configuration shown in the figure has been requested a lot by many readers who need a circuit...
This circuit was found in an American publication from the 1980s. It can be made with most current...