crwdns2933803:08crwdne2933803:0
crwdns2933797:0Arthur Shicrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Arthur Shi
- crwdns2933769:0crwdne2933769:0
- crwdns2933771:0crwdne2933771:0
- crwdns2933801:0crwdne2933801:0
crwdns2933807:0crwdne2933807:0
| [title] Measuring capacitance (large capacitors) | |
| - | [* icon_note] The next two steps show how to measure larger electrolytic capacitors. These capacitors look like small cylinders. |
| - | [* |
| + | [* icon_note] The next two steps show how to measure larger electrolytic capacitors. These capacitors look like small cylinders. The iFixit multimeter can only measure capacitance up to ~100mF (millifarads). |
| + | [* black] ***Power down the circuit you're measuring***, if you're measuring the capacitor while it's still connected to the circuit. |
| [* black] Plug the ***black lead*** into the ***COM port***. Plug the ***red lead ***into the ***right port***. | |
| - | [* black] |
| - | [* black] Set the multimeter to DC volt mode. |
| + | [* black] Make sure the capacitor is sufficiently discharged: |
| + | [* black] Set the multimeter to [link|https://guide-images.cdn.ifixit.com/igi/O11HA6MuayppaweY.full|DC volt|new_window=true] mode. |
| [* black] Carefully touch the probes to the capacitor's leads/pads. ***Treat the circuit as a live circuit*** and be careful not to touch anything else with your probes. | |
| [* icon_caution] ***Make sure the voltage is 10V or less.*** If it isn't, wait a minute to let the capacitor self-discharge, or [guide|2177|use a capacitor discharge tool|new_window=true] to discharge the capacitor. | |
| [* icon_note] As you measure the capacitor's voltage, the multimeter may slowly charge the capacitor up. Don't measure the capacitor for too long to prevent this from happening. |