Editing Reverse Protection Diodes
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<b>Description:</b><br> These large current, high voltage diodes can be used for a multitude of purposes. Really, we just use them for reverse polarization protection. | <b>Description:</b><br> These large current, high voltage diodes can be used for a multitude of purposes. Really, we just use them for reverse polarization protection. | ||
− | Most systems that we play with are DC | + | Most systems that we play with are DC system - whatever board requires 'X' voltage (3.3V for example). The board expects the DC voltage in a certain way. VCC in one spot, ground in another. If you reverse this (attaching VCC where GND should be, etc) ''BAD'' things happen. If you're lucky, there will be a massive short somewhere and nothing major will smoke. If you're unlucky, the board will go up in smoke and some things might explode. In practice, most things heat up (no smoke or explosion), but are instantly killed. So now you've got a board that doesn't work but it can be very hard (nye, nearly impossible) to tell what is damaged and what can be fixed. |
Obviously there must be a way to prevent this from happening. Enter diodes... | Obviously there must be a way to prevent this from happening. Enter diodes... |