Charging curve of a capacitor / charging and discharging of a capacitor Principle A capacitor is charged by way of a resistor. The current is measured as a function of time and the effects of capacitance, resistance and the voltage applied are determined. Benefits - Simple and very clear set-up: only few components required
- Further experiments in electricity and electronics can be performed with the equipment
Tasks - To measure the charging current over time:
- using different capacitance values C, with constant voltage U and constant resistance R
- using different resistance values (C and U constant)
- using different voltages (R and C constant).
- To determine the equation representing the current when a capacitor is being charged, from the values measured.
Learning objectives - Charging
- Discharging
- Time constant
- Exponential function
- Half life
Even more accurate readings are possible when using the multimeter 07124-12. |
Connection box
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06000-00
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2
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Two-way switch, single pole
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06005-00
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1
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Capacitor, 2 x 30 µF
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06007-00
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1
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Resistor 100 Ohm, 1W, G1
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39104-63
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1
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Resistor 1 MOhm, 1W, G1
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39104-52
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4
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brigde plug
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06027-07
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2
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Capacitor 1 microF/ 100V, G2
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39113-01
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1
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Capacitor 4,7microF/ 100V, G2
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39113-03
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1
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PHYWE Power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A
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13506-93
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1
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Digital stopwatch, 24 h, 1/100 s and 1 s
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24025-00
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1
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Digital multimeter, 600V AC/DC, 10A DC, 20MΩ
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07124-12
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1
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Connecting cable, 32 A, red, various lengths
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07360-01
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3
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Connecting cable, 32 A, blue, various lengths
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07360-04
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4
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Service
