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.
Suggested by Mullard in a1969 documentation, this circuit generates the erasure signal for tape...
A pulse applied to the input of this circuits results in a damped signal in the output. Frequency...
This circuit can activate a powerful lamp or call system when a telephone call occurs. Suitable for...