Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be mounted on a heat sink. The transformer is 25 V with a current of 3 to 4 A.
We present a circuit for those who want to give the impression that there are people at home when...
The integrated circuit used in this 1986 wireless microphone is not very common today. The L1 coil...
This circuit, which we found in a 1997 documentation, generates powerful signals around 1 MHz. Its...