Passive Components


Double-layer capacitors have highest capacitance values

2 November 2005 Passive Components

Based on the 'Helmholtz principle' of energy storage in the electrochemical double-layer capacitor, Wima has developed a line of 'SuperCap' capacitors that it claims features approximately 1 000 000 times the capacitance values of conventional capacitors of comparable size. The energy contained by the Wima SuperCaps can be compared to the energy stored in small batteries, but the SuperCaps can release considerably higher currents. They are also maintenance-free.

Special materials based on a carbon electrode, are deposited with a very low resistance on an electron-conducting foil. This provides the SuperCaps with layers that comprise an extremely large surface in the smallest possible volume.

These double-layer capacitors are available with standard capacitance values from 100 F to 300 F with a rated voltage of 2,5 V d.c. and with discharge currents up to 50 A. With a prismatic housing, serial and parallel connections can be realised in a minimum volume. The SuperCaps can replace, protect or support batteries in, for example, new drive technologies, wind-power systems or UPS.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Radiation-tolerant PolarFire FPGA
23 October 2019, Avnet South Africa , Programmable Logic
Developers of spacecraft electronics use radiation-tolerant (RT) field programmable gate arrays (FPGAs) to create on-board systems that meet the demanding performance needs of future space missions, survive ...

Read more...
Radiation-tolerant PolarFire FPGA
25 November 2019, Avnet South Africa , Programmable Logic
Developers of spacecraft electronics use radiation-tolerant (RT) field programmable gate arrays (FPGAs) to create on-board systems that meet the demanding performance needs of future space missions, survive ...

Read more...
Design considerations for powering remote Bluetooth beacons
25 November 2019, Avnet South Africa , Power Electronics / Power Management, Editor's Choice
One of the most exciting low-power wireless technologies to emerge in the last couple of years is Bluetooth beacon technology, which involves placing small electronic beacon devices at points of interest that broadcast packets of information via Bluetooth low energy to the smartphones of passers-by.

Read more...
Bluetooth 5.0 audio IC and module
25 November 2019, Avnet South Africa , Telecoms, Datacoms, Wireless, IoT
To help Bluetooth speaker and headphone manufacturers maintain product differentiation in the competitive wireless audio market, Microchip Technology released the next generation of its Bluetooth 5.0-qualified ...

Read more...
High-power chip resistors
25 November 2019, TRX Electronics , Passive Components
Panasonic has released a line of resistors to help engineers produce cheaper, smaller and more efficient designs. The legacy resistors of the ERJ series have been made smaller while handling the same ...

Read more...
Battery charger for medical and personal electronics
25 November 2019, Avnet South Africa , Power Electronics / Power Management
Texas Instruments introduced a new switching battery charger IC that supports a termination current of 20 mA. Compared to competing devices, which typically support a termination current higher than 60 ...

Read more...
BAW-based chips for comms infrastructure
25 November 2019, Avnet South Africa , Telecoms, Datacoms, Wireless, IoT
Texas Instruments debuted new bulk acoustic wave (BAW)-based embedded processing and analog chips for the next generation of connectivity and communications infrastructure. The first two devices developed ...

Read more...
Buck converter with lowest quiescent current
25 November 2019, Avnet South Africa , Power Electronics / Power Management
Texas Instruments introduced an ultra-low-power switching regulator with what it claimed as the industry’s lowest operating quiescent current (IQ) at 60 nA. The TPS62840 synchronous step-down converter ...

Read more...
Tiny signal transformers for LAN interfaces
25 November 2019 , Passive Components
Würth Elektronik is expanding its extensive range of signal transformers. The new series of WE-STST (Super Tiny Signal Transformer) devices for LAN interfaces features a maximum component height of just ...

Read more...
Online capacitor selection tool
25 November 2019, RFiber Solutions , Passive Components
Passive Plus Inc.’s (PPI) brand new Capacitor Application Program (CAP) helps engineers and designers select capacitors according to parameters such as capacitor value and frequency. CAP will provide ...

Read more...