A photodiode is a light-sensitive semiconductor device with a p-n or p-i-n structure. A photodiode produces current when it absorbs photons (or light). We will discuss two operation modes of photodiodes: photovoltaic and photoconductive. HOW PHOTODIODE WORKS When a photon…
A light emitting diode (LED) circuit in electronics is an electrical circuit that powers an LED. The circuit must limit the current to avoid damaging the LED while supplying enough current to illuminate the LED at the necessary brightness. The…
A voltage divider is a passive linear circuit that produces an output voltage that is a fraction of its input voltage. The most common voltage divider is two resistors connected in series, with the input voltage applied across them and…