Zener Diodes

This electronics video tutorial provides a basic introduction into zener diodes which is used as voltage regulators in DC circuits.

Full-Wave Bridge Rectifiers:

Voltage Multiplier Circuit:

Light Emitting Diodes:

Power Dissipation In LEDs & Diodes:

LED Resistor Value:

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Potentiometers - Variable Resistance:

LED Dimmer Circuit:

Thermistors - Temperature Sensors:

Voltage Regulators - Zener Diodes:

Zener Diode Solar Cell:

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Power Zener Diodes - Voltage Regulation:

12V LED Battery Level Indicator:

Reverse Polarity Circuit Protection:

High Voltage Surge Protection Circuit:

AC DC Polarity Tester Circuit:

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DC to AC Reverse Polarity Circuit:

Varactor Diodes - Voltage Capacitors:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

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[Kadnat]

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[laser]

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[mogaolimpiu]

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[darthvaderlxxi]

Althouh Zener Diodes are a bit old-school, they do have some modern applications. Back in the 80's, I worked on the first Transatlantic Fiber Optic Cable (TAT-8). It had repeaters every 25 Kilometers or so. The power for all the repeaters was several thousand Volts with each repeater having a Zener of the Voltage needed to power the Repeater in series with the Power. Think of it as a High Voltage supply with a string of Zeners in series with the output, each repeater having it's own Zener with the voltage and current being taken off across each Zener. Quite a simple setup, but it worked quite well.

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[onurolce]

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[TheBluBrawler]

Thanks for the videos. Very easy to understand. Just started getting into electrics and this is very helpful.