• How to test a transistor and diode.

    Posted in: Tutorials, Video

    How to test a diode and transistor (NPN and PNP) to assist with trouble shooting and fault finding

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  • I demonstrate how to test a diode and transistor (NPN and PNP) to assist with trouble shooting / fault finding an electronic circuit board.

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    * Fluke 115 digital multimeter with diode test.
    * Electronic diagram and symbols of PNP, PNP transistors and diode.
    * How to fix a circuit board.
    * S8050 NPN transistor, C639 NPN transistor, C640 PNP transistor
    * forward bias 0.3 volt to 0.8 volt, reverse bias open circuit OL on multimeter.

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