Suggested by General Electric in a 1967 publication, this circuit uses the D13T1, an uncommon SCR today. This component is triggered by the anode.
This common crystal oscillator configuration can generate signals from 1 to 20 MHz, depending on...
This burglar alarm is highly efficient, depending of course on the care with which it is...
This light relay is powered directly by the power grid by activating a 110 V relay. The LDR is of...