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 80's circuit uses an integrated amplifier of the era, but nothing prevents it from being...
This circuit produces horizontal lines or bars in a analog TV tuned between channels 2 and 5. L1...
This circuit can be used to add a delay to a logic signal as shown by the input and output...