Using Zener diode as over voltage protection for LED - General Electronics - Arduino Forum
What is the role of this Zener diode in a LED string? (Old traffic light restoration) - General Electronics - Arduino Forum
LED VoltMeter Circuit
Why does this zener diode fix the voltage to the LEDs? - Electrical Engineering Stack Exchange
How to Build a Voltmeter Circuit with Zener Diodes
LED as Zener diode. Design Note 37 – Hobby Projects
In this article, we have posted two different circuit to test zener diode using LM317. Circuit diagram, circuit descrip… | Diode, Electronic circuit design, Circuit
Zener Diode : Construction, Circuit Diagram, Working & Its Applications
Mechanism and use of Zener diode, LED and photodiode - sciencendtech