File:Led failure in a simple Charlieplexed array.png
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Summary
| Description |
English: If a diode goes open-circuit in a standard x/y diode array, there is no route for current to pass from the positive terminal to the negative terminal. With a partially, or fully "Charlieplexed" array, however, other routes are available. If D1 goes open-circuit in the partially "Charlieplexed" array shown, current can pass from positive to negative through 3 diodes in series, D2, D3 and D4. Other routes are also available. If these diodes are LEDS, and the voltage is high enough, this could cause unexpected lighting effects .
When the supply is reversed, no deleterious effect is noticed, the current flowing through D5. Under these conditions D1 would not have conducted anyway, due to it being reverse biased. |
| Date | |
| Source | Own work |
| Author | Ron Binstead |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:38, 26 May 2023 | | 1,200 × 480 (30 KB) | Touchscreen1 | Uploaded own work with UploadWizard |
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