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crwdns2933797:0Nathan Tafelskycrwdnd2933797:0crwdne2933797:0
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| + | [title] Test Diode 1, IN4007 |
|---|---|
| + | [* black] Test [link|https://www.allaboutcircuits.com/textbook/semiconductors/chpt-3/introduction-to-diodes-and-rectifiers/|diode|new_window=true] (D1) nearest the barrel jack. A diode can be thought of as a switch: “closed” when forward-biased and “open” when reverse-biased. |
| + | [* black] Diode circuit voltage measurement figures: (a) Forward biased. (b) Reverse biased. |
| + | [* black] In forward bias condition, around a 0.7V drop is expected, like a closed switch that drops .7V across it. In reverse bias, the multimeter should show 'OL' (over limit) or a very high resistance, like an open switch. Mine showed 1.2V, which indicates a bad diode. It was also visibly cracked. |
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