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

Cost savings: Xpert-Link provides all subsidiary functions (power supply, switch, trigger)

Extra experiment included: "Switch-on behaviour of a coil"

Simplified implementation: all pre-settings already prepared

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.

 What you can learn about


Charging

Discharging

Inductance

Time constant

Exponential function

Half-life


Operating system-independent software included. Computer not provided.