DIFFERENT APPLICATION OF DIODE [TAGALOG]

A diode is a semiconductor device that essentially acts as a one-way switch for current. It allows current to flow easily in one direction, but severely restricts current from flowing in the opposite direction.

Diodes are also known as rectifiers because they change alternating current (ac) into pulsating direct current (dc). Diodes are rated according to their type, voltage, and current capacity.

Diodes have polarity, determined by an anode (positive lead) and cathode (negative lead). Most diodes allow current to flow only when positive voltage is applied to the anode.

When a diode allows current flow, it is forward-biased. When a diode is reverse-biased, it acts as an insulator and does not permit current to flow.

Strange but true: The diode symbol's arrow points against the direction of electron flow. Reason: Engineers conceived the symbol, and their schematics show current flowing from the positive (+) side of the voltage source to the negative (-). It's the same convention used for semiconductor symbols that include arrows—the arrow points in the permitted direction of "conventional" flow, and against the permitted direction of electron flow.

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VIDEO SUMMARY!

0:00 Intro

0:10 What is Diode

0:55 Diode as Rectifier

1:35 What is Alternating Current?

2:46 How Diode Works in AC and DC

4:21 Halfwave Rectifier Circuit

4:39 Fullwave Rectifier Circuit

5:28 How to Eliminate Ripple Voltage

6:43 Looking for Electronics Components? Check this Out!

7:13 Diode as Circuit Protection Device

8:19 Diode as Reverse Polarity Corrector

11:36 Why there is Diode in Relay


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