This simple timer with unijunction transistor was found in an old American technical documentation. We can use 2N2646 for the unijunction and BC548 for the transistor.
This circuit allows the use of two triggers (inverters or NAND ports connected in this way) to...
This circuit was found in a 1992 publication. Its purpose is to time the activation of a doorbell...
A fine adjustment of the output voltage of a power source is achieved with this circuit, which...