Under this name, Radioelectronics magazine published in the January 1974 issue a light exposure meter for photographers. The circuit used general-purpose transistors and a FET, with an LDR sensor.
This circuit emits a loud sound in a headset when the driver who wears it nods while being in a...
With 3 flip-flops (which correspond to 1 integrated and a half) we can also make a divider by 8,...
This circuit is from the 1993 Motorola Linear Interface Circuits. The source does not have to be...