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demonstrations:5_electricity_and_magnetism:5k_electromagnetic_induction:can_crusher:start
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demonstrations:5_electricity_and_magnetism:5k_electromagnetic_induction:can_crusher:start [2019/04/03 23:15] demoroom |
demonstrations:5_electricity_and_magnetism:5k_electromagnetic_induction:can_crusher:start [2019/04/11 21:06] demoroom |
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| <WRAP box right> | <WRAP box right> | ||
| - | {{image.php.jpg?400|}} | + | {{IMG_20180328_154912362.jpg?400|}} |
| - | // // | + | // The big bang capacitor, with the can-crushing apparatus connected. // |
| </WRAP> | </WRAP> | ||
| Line 30: | Line 30: | ||
| Once everything is hooked up, you're ready to run the demonstration. | Once everything is hooked up, you're ready to run the demonstration. | ||
| + | The instructions below are also included on top of the 3kV power supply. | ||
| + | |||
| + | - Plug in the solenoid that closes the circuit. The button on its power cable is a **toggle** switch rather than a momentary switch, so make sure it's turned off. | ||
| - Unclip the wire short from the terminals. If for whatever reason they were not already in place, short the capacitor with the discharge wand. | - Unclip the wire short from the terminals. If for whatever reason they were not already in place, short the capacitor with the discharge wand. | ||
| - Connect the power supply to the terminals. | - Connect the power supply to the terminals. | ||
| - | - Plug the power supply in, **(TODO: is following the voltage with the knobs faster?)** | + | - Plug the power supply in. Turn it on, starting with the power supply set to 500V. As the meter approaches the set value, increase it in 500V increments until you reach 3kV.((This seems to reduce the charging time by nearly half. This may be due to reduced current flow on the higher voltage settings.)) This will take about five minutes. |
| - | - Once the capacitor is charged to 3kV, remove the leads from the capacitor by pulling the attached strings. *Take utmost care in this step*; pull them off the terminals in a way that guarantees they have no chance of touching you. Place them on the ground away from each other. | + | - Once the capacitor is charged to 3kV, remove the leads from the capacitor by pulling the attached strings. **Take utmost care in this step**; pull them off the terminals in a way that guarantees they have no chance of touching you. Place them on the ground away from each other. |
| - Turn off the power supply. | - Turn off the power supply. | ||
| - | - **(TODO: FINISH THIS.)** | + | - Press the toggle switch once to discharge the capacitor into the coil, and again shortly later to turn off the solenoid. |
| + | - Use the discharge wand multiple times to ensure that the capacitor is fully discharged. | ||
| + | - Return the wire short to the terminals, making sure a good connection is made. | ||
| ===== Notes ===== | ===== Notes ===== | ||
| <WRAP danger> | <WRAP danger> | ||
| - | High voltage is used in this demo! Please ask for assistance from demo personnel if you have not operated this before. Always short the capacitor using the copper rod before touching anything with your hands to make sure it is fully discharged | + | **High voltage and a dangerous capacitor is used in this demo!** Please ask for assistance from demo personnel if you have not operated this before. Always short the capacitor using the copper rod before touching anything with your hands to make sure it is fully discharged. Assume everything is at high voltage until proven otherwise. |
| </WRAP> | </WRAP> | ||
| Line 49: | Line 54: | ||
| {{IMG_20180328_154917751.jpg?400|}} | {{IMG_20180328_154917751.jpg?400|}} | ||
| - | // // | + | // Top view of the can crushing apparatus. Bottom left inside the acrylic box is the solenoid which, when energized, completes the circuit. The terminals are shorted in this picture, this shows how it should be stored.// |
| </WRAP> | </WRAP> | ||
| + | <WRAP box right> | ||
| + | {{image.php.jpg?400|}} | ||
| + | |||
| + | // front of the capacitor, without the can crusher apparatus attached // | ||
| + | </WRAP> | ||
| </WRAP> | </WRAP> | ||
| Line 57: | Line 67: | ||
| <WRAP box right> | <WRAP box right> | ||
| - | {{IMG_20180328_154912362.jpg?400|}} | + | {{img_20190410_151133.jpg?400|}} |
| - | // // | + | // Aluminum beverage can before and after crushing. // |
| </WRAP> | </WRAP> | ||
demonstrations/5_electricity_and_magnetism/5k_electromagnetic_induction/can_crusher/start.txt · Last modified: 2020/01/28 18:29 by demoroom
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