Tag: LED

Why Do LED Bulbs Stay Faintly Lit When Switched Off?

Written by giux | Published on Apr 25, 2025 | No comments

Why can an LED bulb remain faintly lit or flash after switching off? A practical explanation of residual current, wiring capacitance, dimmers and switches.

#illuminated switch #leakage current #LED #LED bulbs #LED dimmer #LED driver #LED flicker #LED ghosting #LED lighting #parasitic capacitance #residual current

LED Theory: Basic Concepts

Written by giux | Published on Apr 25, 2025 | No comments

An LED is a p-n junction diode that emits light through the recombination of electrons and holes. The color depends on the band gap of the semiconductor material. Current must be controlled, not voltage, to avoid damage…

#analog electronics #beginner electronics #circuit design #current limiting resistor #diode equation #electronic components #electronics basics #forward voltage #LED #LED basics #LED characteristics #LED circuits #LED color #LED current #LED efficiency #LED resistor calculation #LED theory #LED wavelength #light emitting diode #PN junction #semiconductor diode #semiconductor physics