Datasheet

Product Specification
EGC-RF-1-0
Electric Double Layer Capacitor RF series
7
8.The measurement of Gold Capacitors
8-1 Capacitance[Measurement(1)]
Circuit
(measurement)
1.Power supply E shall be set at Maximum operating voltage
2.After reaching maximum operating voltage at V measurement, the voltage shall be hold.(1 hour or more)
3.Switch shall be turned on toward side2 and the capacitor shall be discharged with the constant electric current
1mA/F through the constant load.
4.The time the capacitor terminal voltage drops from V1 to V2 shall be measured. After that, capacitance shall
be calculated by the following formula.
Voltage V1 V2
5.5V 3.0V 2.5V
3.6V 1.5V 1.0V
Panasonic Electronic Devices Co.,Ltd.
A
V
E
SW
Cx
R
2
1
Cx: Capacitor under test
V: voltmeter
E: Constant voltage power supply
R: Constant electric current load
A: DC ammeter
Constant electric current load
Charge time
Time[s]→
E
V1
V2
T1 T2
I×(T2-T1)
V1-V2
C= [F]
C[F]
I[A]
T2-T1[s]
V1-V2[V]