Researchers at the University of California, Riverside have developed a silicon anode that would allow us to charge lithium-ion batteries up to 16 times faster than is currently possible. The new design relies on a three-dimensional, cone-shaped cluster of carbon nanotubes that could also result in batteries that hold about 60 percent more charge while …
New li-ion battery anode could charge electronics in minutes Read More »
This collection of circuits provides step-up voltage regulation for single cell and dual cell Alkaline, NiMH, and Li+ battery driven applications. Regulate your battery driven app with an efficient converter from Maxim. Your battery-powered application needs regulation. This collection of circuits provides step-up voltage regulation for single- and dual-cell Alkaline, NiMH, and Li+ battery-driven applications. …
Maxim Power for Single-Dual Cell Battery Driven Apps Read More »
CHAMPAIGN, Ill. — Though they be but little, they are fierce. The most powerful batteries on the planet are only a few millimeters in size, yet they pack such a punch that a driver could use a cellphone powered by these batteries to jump-start a dead car battery – and then recharge the phone in …
New Battery Technology Charges 1000 Times Faster Read More »
Properly maintained rechargeable batteries can provide good service and long life. Maintenance involves regular monitoring of battery voltage. The circuit in Figure 1 works in most rechargeable batteries. It comprises a reference LED, LEDREF, which operates at a constant current of 1 mA and provides reference light of constant intensity regardless of battery voltage. It …
A circuit that properly charges sealed lead-acid batteries ensures long, trouble-free service. Fig 1 is one such circuit; it provides the correct temperature-compensated charge voltage for batteries having from one to as many as 12 cells, regardless of the number of cells being charged. The Fig 1 circuit furnishes an initial charging voltage of 2.5V …
Features Wide Input Voltage Range: Up to 32V (40V Absolute Maximum) Programmable Charge Current Up to 4A Selectable C/10 or Onboard Timer Termination Dynamic Charge Rate Programming/Soft-Start Programmable Input Current Limit 0.5% Float Voltage Accuracy 7.5% Charge Current Accuracy 4% C/10 Detection Accuracy NTC Resistor Temperature Monitor Auto-Recharge at 97.5% Float Voltage Auto-Precondition <70% Float …
Monolithic 4A High Voltage 1 Cell Li-Ion Battery Charger Read More »
Contributed by Publitek European Editors 4/9/2013 Many security and motion detector systems rely on small, semi-autonomous nodes that are easy and simple to install. This implies the use of a battery-based power source and low-power operation in order to minimize the number of battery changes during the lifetime of the product. Over its lifetime, the …
Buck-Boost Converters Help Extend Battery Life for Motion Detection Read More »
Sealed Lead Acid batteries are often used in amateur radio as a convenient power source for radios, since amateur radio equipment has standardized on 12.6V. The Cal Poly Amateur Radio Club enjoys a steady source of donations of slightly used SLAs, so I got a few of them with need for a battery charger. Since the …
Lead-Acid Battery Charger 555 Based Constant Current Read More »
Microchip announces a new family of Serial Peripheral Interface (SPI) EERAM memory products that offers system designers up to 25 percent cost savings over the current serial Non-Volatile RAM (NVRAM) alternatives. The family introduces four reliable SPI densities to Microchip’s EERAM portfolio, ranging from 64 Kb up to 1 Mb. High-density SPI EERAMs up to 1 Mb …
EERAM MEMORY SOLUTIONS REDUCE MEMORY COSTS AND RETAIN DATA AT POWER LOSS Read More »
