Talk:SKA6516: Difference between revisions
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I honestly have trouble understanding the description of the failure mode of this transistor saying "and when tested will show a reverse polarity protection diode". What kind of test will reveal what exactly? When testing a BJT with a multimeter in diode mode you will find the BE and BC diodes - I dont see how another diode could be found here? Is one of these measurement shorted in problematic transistors? | I honestly have trouble understanding the description of the failure mode of this transistor saying "and when tested will show a reverse polarity protection diode". What kind of test will reveal what exactly? When testing a BJT with a multimeter in diode mode you will find the BE and BC diodes - I dont see how another diode could be found here? Is one of these measurement shorted in problematic transistors? | ||
maybe the description could be clarified by the original author. [[User:Gregor|Gregor]] ([[User talk:Gregor|talk]]) 10:14, 15 September 2023 (PDT) | maybe the description could be clarified by the original author. [[User:Gregor|Gregor]] ([[User talk:Gregor|talk]]) 10:14, 15 September 2023 (PDT) | ||
To answer that, if you use one of those cheap multi component tester devices you find on ebay, and test the bad transistor, you will see on the screen a BJT with a diode that can its anode connected to the emitter and the cathode to the collector. [[User:Benjamin|Benjamin]] ([[User talk:Benjamin|talk]]) 11:24, 4 October 2023 (PDT) | |||
<gallery> | |||
Component Tester.jpg | |||
BJT reverse diode.png | |||
</gallery> | |||
Revision as of 10:25, 4 October 2023
Excellent stuff, Peter!
I'll get more service manuals OCR'd and will try to automate extracting of the parts lists to help populate these pages for cross referencing.
Currently in the Caribbean, I'll get back to it in a few weeks. Qfissler (talk) 13:55, 29 July 2023 (PDT)
Confusing statement about failure mode
I honestly have trouble understanding the description of the failure mode of this transistor saying "and when tested will show a reverse polarity protection diode". What kind of test will reveal what exactly? When testing a BJT with a multimeter in diode mode you will find the BE and BC diodes - I dont see how another diode could be found here? Is one of these measurement shorted in problematic transistors? maybe the description could be clarified by the original author. Gregor (talk) 10:14, 15 September 2023 (PDT)
To answer that, if you use one of those cheap multi component tester devices you find on ebay, and test the bad transistor, you will see on the screen a BJT with a diode that can its anode connected to the emitter and the cathode to the collector. Benjamin (talk) 11:24, 4 October 2023 (PDT)
