PASCO PI-9880 Power Supply - Manual (Page 36)

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D C P r o g r a m m a b l e P o w e r S u p p l y C u s t o m P r o g r a m
36
Exponential
Cycloid
Settings
Graph Type Step Time Auto-repeat
0 0.5 s 1
Voltage values
0.00, 0.02, 0.05, 0.09, 0.14, 0.21, 0.31, 0.43,
0.61, 0.84, 1.15, 1.58, 2.15, 2.92, 3.97, 5.38,
7.28, 9.85, 13.32, 18.00
The Scale Factor is 50%. In this case the programed points follow the function V = 0.06 (e 0.6 t − 1). Just 20 points are
sufficient for a close approximation of the function. Change the Step Time to a negative value for a decreasing exponential.
Use this program (with negative Step Time) to simulate a discharging capacitor.
Settings
Graph Type Step Time Auto-repeat
0 0.10 s −0
Voltage values
0, 3.8, 6.32, 8.05, 9.50, 10.75, 11.83, 12.79,
13.64, 14.39, 15.06, 15.65, 16.16, 16.60, 16.98,
17.29, 17.55, 17.75, 17.88, 17.97, 18.00
The Scale Factor is 50%.