Technical Characteristics; Schematic Diagram - Jeulin 281 265 Mode D'emploi

Electricity
Charging a capacitor at
constant voltage
Ref :
281 265
ENGLISH

2 Technical characteristics

•
Voltage:
•
Resistances:
•
Capacitances:
•
Synchro output: signal leading by 0.1 s on the voltage step
•
Outputs:
•
Power supply:
•
Dimensions:
•
Mass:
•
Guarantee:
3 Experiments

3.1 Schematic diagram

The diagram is represented in
the figure hereof.
In position (1), the generator E
provides a constant voltage that
charges the capacitor C through
a resistance R for a duration Δt.
At the end of charging, the capacitor
is discharged through resistance R by
short-circuiting, with the reversing switch K
in position (2).
The ammeter A measures the intensity
i of the charging current.
Note: If the measurement of the intensity is not desired then the ammeter is
replaced by a short circuit jumper.
3.2 Preliminary adjustment of the voltage
The voltage source is set to a value between 3 and 10 V (for example
E = 9 V) using a voltmeter connected between points A and B. The reversing
switch K is in position 2 to avoid charging the capacitor.
Note: It is possible to detect the current i by replacing the ammeter A by an
ESAO ammeter adaptor and display the corresponding curve on a computer
screen during the entry of voltage U
page).
10
adjustable from 3 to 10 V DC
100 Ω, 1 kΩ, 10 kΩ, 100 kΩ (values at +/- 1 %)
22 μF, 100 μF, 220 μF, 1000 μF (values at +/-
20 %)
ø 4mm safety sockets
12 V mains adaptor
160 x 120 x 90 mm
305 g
2 years
A
+
E
(see the screen grab on the following
c
1
K
2
Ri(t)
u (t)
c
A
B
i(t)
R
C