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Charging curve of a capacitor / charging and discharging of a capacitor

Product No: P2420201

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.

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.

What you can learn about

Charging
Discharging
Time constant
Exponential function
Half life

Materiallist (Excerpt)	Product	Amount
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V	13505-93	1
Capacitor,2x30 micro-F	06219-32	1
DMM, auto range, NiCr-Ni thermocouple	07123-00	1
Two-way switch, single pole	06030-00	1
Connection box	06030-23	2
Capacitor 1 microF/ 100V, G2	39113-01	1
Capacitor 4,7microF/ 100V, G2	39113-03	1
Stopwatch, digital, 1/100 s	03071-01	1
resistor 100 Ohm, 1W, G1	39104-63	1
resistor 1 MOhm, 1W, G1	39104-52	4
Connecting plug white 19 mm pitch	39170-00	2
Connecting cord, 32 A, 250 mm, red	07360-01	3
Connecting cord, 32 A, 250 mm, blue	07360-04	4
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals	16502-42	1