Found in 90s Radio Electronics, this shield can control high voltage loads in the power grid. Isolation is guaranteed by the use of an optical coupler.
The integrated circuit of this 80's project is not common today. This is the HA2530 which must be...
May 2017 - Qorvo QPL9065 low-noise amplifiers can be purchased from Mouser Electronics for a...
The transistor of this circuit can be 2N2222 or BF494. The coil can have 2 to 8 turns of wire 22...