This windshield wiper timer was obtained in an 80's Hands On. The transistor can be the BC548 and the relay is 12 V sensitive. The time is set to R3.
This circuit was found in an American documentation from the 90s. It consists of a variable with a...
The circuit shown in the figure generates a pulse train whose frequency is determined by the...
We found this circuit in a 1994 Linear Applications Handbook by National Semiconductor. The LM10...