This signal amplifier for ATV in the 427 to 439 MHz band was found in a magazine 73 for radio amateurs of the 90's. The circuit is installed next to the antenna on the mast itself.
ON Semconductor FFSP0665B 650V 6A SiC Schottky Diodes Available through Mouser Electronics, these...
This circuit shows how it is possible to control 9 loads with only 6 Triacs using the matrix...
The critical point in this project is the adjustment of the optical system, mainly to avoid...