Difference between revisions of "LC circuit"
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==Requirements and experimental material== | ==Requirements and experimental material== | ||
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| + | In this experiment a very simple LC circuit is created with a coil and a capacitor. To measure the magnetic field the coil has to have a low resistance and a high inductance. Such coils can be bought in audio supply and can be a bit expensive. The used coils for this experiment can be found at [https://www.hammfg.com/electronics/transformers/choke/195-196] and [https://www.monacor.de/produkte/components/lautsprechertechnik/frequenzweichen-und-bauteile-/lsi-100t/] | ||
- smartphone (with phyphox-app and magnetic sensors) | - smartphone (with phyphox-app and magnetic sensors) | ||
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- some capacitors between 470uF and 22.000uF | - some capacitors between 470uF and 22.000uF | ||
| − | - a battery or power supply | + | - a battery (9V) or power supply |
| + | |||
| + | ==Setup== | ||
| + | |||
| + | The capacitor is charged with a battery or power supply and then shortened with the coil (directly connected to the coil). The phone is placed on the coil (the z-axis of the magnetometer points "into" the core of the coil). Due to the high sensitivity | ||
| − | |||
| − | |||
==Examples== | ==Examples== | ||
Revision as of 10:46, 15 December 2022
| Experiment | RC circuit |
|---|---|
| Category | Magnetism |
| Used sensors | magnetometer |
The magnetic sensor is used to display the magnetic field of a coil in a RC circuit.
Requirements and experimental material
In this experiment a very simple LC circuit is created with a coil and a capacitor. To measure the magnetic field the coil has to have a low resistance and a high inductance. Such coils can be bought in audio supply and can be a bit expensive. The used coils for this experiment can be found at [1] and [2]
- smartphone (with phyphox-app and magnetic sensors)
- a coil with low resistance and high inductance (for more information see paper)
- some capacitors between 470uF and 22.000uF
- a battery (9V) or power supply
Setup
The capacitor is charged with a battery or power supply and then shortened with the coil (directly connected to the coil). The phone is placed on the coil (the z-axis of the magnetometer points "into" the core of the coil). Due to the high sensitivity
Examples
TODO
Paper, and work sheets
The experiment was developed in a thesis for education students (Staatsexamensarbeit) at the University of Konstanz. The results where published in an open access paper [3], where a lot of additional information can be found.
Work sheets in German where developed and can be found here. TODO
