TTEC 4842 exp 5

Components: 1 x resistor, 1 x capacitor, 1 x O/N switch
Exercise: First, calculate how much time it would take to charge up the capacitor. Then, connect the circuit as shown above. Measure the time taken by the capacitor to reach the applied voltage on an oscilloscope. Fill in the chart below. Also draw the observed waveforms in the graphs below, filling the details on each one.





            

Circuit #	Capacitance (uF)	Resistance (Kohm)	Calculated time (ms)	Observed time (ms)
1	100	1	600ms	500ms
2	100	0.1	60ms	50ms
3	100	0.47	280ms	250ms
4	330	1	2.4s	1.75s

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circuit 1

circuit 2

circuit 3

                                           circuit 4

How does changes in the resistor affect the charging time?
When a resistor is changed, the amount of voltage supplied to the capacitor changes so therefore that effects the rate of charge in the capacitor.


How does changes in the capacitor affect the charging time?
This effects the charging time because a change in capacitor size means a change in storage size, the more storage space the longer it takes to fill the capacitor, and the same rule applies to a smaller capacitor except there is less storage so therefore it takes less time to fill. The capacitor also has a curve in the oscilloscope graph because a capacitor releases voltage gradually, the release time (graph curve) fully relys on the specific specifications of the capacitor being used, so the release time curve will vary for different capacitors