File:Bipolar transistor as two diodes for meter testing (diagram).png
Summary
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Diagram of an NPN and a PNP bipolar transistor drawn as two diodes joined at the base, with the multimeter diode-test readings for a good silicon transistor out of circuit: 0.45 to 0.9 V for each base junction in the forward direction, open in reverse, and open from collector to emitter both ways. Used on Testing Diodes, Transistors and Regulators.
Source
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Drawn for this wiki in October 2026 from Samuel M. Goldwasser, "Testing Semiconductor Devices with a VOM or DMM", version 2.45, 19 November 2006, sections "Transistor Testing Methodology" and "Testing with a (Digital) DMM".
Author
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RetroTechCollection wiki.
Licence
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Released under CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/).
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:59, 25 October 2026 | | 1,192 × 676 (60 KB) | Josh (talk | contribs) | Upload for repair-technique page |
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