With this simple circuit it is possible to simulate a telephone line for carrying out repairs on telephone sets. The transformer must be 36 V and the diode can also be 1N4004.
This circuit is from the 1977 RCA CMOS Integrated Circuit from the RCA of 1977. The power supply of...
The MOS field effect transistors of this circuit are not very common, as it is a project from the...
This circuit triggers a relay when a pulse of light hits the LDR. The potentiometer serves as a...