4) LED as a Blown fuse indicator: When fuse is working, it provides short circuit path bypassing LED circuit. So LED is OFF. If fuse opens the line voltage drives the LED through capacitor and thus ...

I was convinced that there must be a way that a programmable zener diode, such as the TL431, could be used but I found no simple circuits.

In this installment of Circuit VR, we’ll look at a simple buck converter — that is a switching regulator that takes a higher voltage and produces a lower voltage.

The control circuit responds by increasing the PWM on-time to boost the output voltage higher in a failed attempt to increase the LED current. In most instances, the output voltage rapidly rises in an ...

Researchers have invented a new organic polymer tunnel diode -- an electronic component that could one day lead to plastic computer memory and plastic logic circuits on computer chips. Today ...