This Star Trek red alert circuit was found in the July 1990 issue of Radio Electronics magazine. The power transistor must be equipped with a heat sink.
June 2017 - ECM032 series of SMD quartz from ECS crystals can now be obtained from Mouser...
This circuit can also operate with SW and even VHF signals up to 150 MHz. The circuit can be...
This is a traditional complementary configuration that provides good audio power with excellent...