This powerful siren is suitable for warning or alarm systems. The components are current and the transistor 3055 must be mounted on a good heat sink.
With the coded activation of the relays, it is possible to control which of the 16 outputs...
In an article describing the assembly of a Tesla coil, the September 1991 issue of Radio...
This high-power circuit was found in a documentation from the 90s. The circuit can use more...