Electric double-layer capacitors(EDLC capacitors) for power are intended for applications that require discharge currents in the range from mA to A. The characteristics of the capacitors include such performance as relatively high capacitance and low internal resistance, which ···
This part of IEC 62391 applies to fixed electric double layer capacitors (called” supercapacitors”) mainly used in DC circuits of electronic equipment.
Measuring method(refer to figure: Self-discharge test diagram) Before this measurement is made, the supercapacitor shall be f···
Measurements of capacitance and internal resistance by the constant current discharge method and the d.c. resistance method, respectively require much (long) measuring time depending on the product ratings provided that the measuring conditions are standardized with specificity···
In generally, leakage current is current that flows in supercaps that is thought to be in a “off” mode where ideally no current would flow. For internation standard:IEC 62391-1,Leakeage current is a value of current that folws through a supercaps after a charge for a ···
For further general guidance of EDLC capacitor, see IEC 60721-3-0.
During periods of erection work, which are often connected with down time, the user should be aware that conditions might differ from those experienced during the period of operation.
Therefore the selection of ···
Electric double-layer capacitors( EDLC capacitor ) for power are intended for applications that require discharge currents in the range from mA to A. The characteristics of the capacitors include such performance as relatively high capacitance and low internal resistance, whic···
Capacitance is an important parameter for ultracapacitor. The changes in capacitance could reflect the internal status of an ultra capacitor. For example, when the medium becomes damp or the elements get short circuit, the capacitance will be larger than the rated one. So by me···