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  • 1周前
In this video, I’ll show you a simple, reliable method to test whether a MOSFET is functioning properly—no advanced equipment required! Whether you’re repairing electronics, building a project, or just troubleshooting, this quick test can save you time and money.

✅ What you’ll learn:

How to test a MOSFET with just a multimeter

Identify common failure symptoms

Understand the logic behind the test (inspired by Von Neumann’s principles!)

📌 Tools needed:

Multimeter

MOSFET (N-channel or P-channel)

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文字稿
00:00How to quickly test MOSFET functionality
00:02Using the MMOs we previously discussed as an example
00:06Inside the drain and source terminals of a MOSFET
00:09There exists a parasitic diode
00:12Using the diode test function on a multimeter
00:15Directly measure the conduction state
00:17Of either the drain or source terminal
00:20Reverse cutoff indicates
00:22The MOSFET is functioning normally
00:24If conduction occurs in both forward and reverse directions
00:28It indicates the MOSFET has been damaged
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