LTC4123 – Low Power Wireless Charger
https://www.electronics-lab.com/ltc4123-low-power-wireless-charger/
Linear Technology Corporation introduces the LTC4123 to further expand its offerings in wireless battery charging. The LTC4123 combines a 30mW wireless receiver with a constant-current/constant-voltage linear charger for NiMH batteries, such as Varta’s power one ACCU plus series. An external resonant LC tank connected to the LTC4123 enables the IC to receive power wirelessly from […]
Lithium-Ion Battery Warms Up, Operates In Subzero Temperatures
https://www.electronics-lab.com/lithium-ion-battery-warms-up-operates-in-subzero-temperatures/
Charles Q. Choi @ spectrum.ieee.org discuss about a new type of li-ion battery able to work in low temperatures. A new “all-climate” lithium-ion battery can rapidly heat itself to overcome freezing temperatures with little sacrifice in energy storage capacity and power, researchers say. This advance might enable applications for which high-performance batteries are needed in […]
Battery Powered Frequency Meter (0 to 20kHz)
https://www.electronics-lab.com/battery-powered-frequency-meter-0-to-20khz/
The circuit is a simple digital frequency meter that is made of a frequency-to-voltage converter and an analog-to-digital display converter that can be operatedfrom a single 9-volt battery. The TC7126 ADC generates the voltage required by the TC9400 FVC with internal regulators. The TC7126 is designed to directly drive a 3-1/2 digit, non-multiplexed LCD display […]
Supercapacitors to replace batteries?
https://www.electronics-lab.com/supercapacitors-to-replace-batteries/
by Martin Cooke @ elektormagazine.com: It was reported last year that researchers at Rice University in the US, led by chemist James Tour had developed a method of producing a form of graphene on commercial polyimide plastic sheet by zapping it with a laser. The process is called LIG (Laser Induced Graphene). The resulting graphene layer […]
One step closer to the ‘ultimate battery’
https://www.electronics-lab.com/one-step-closer-to-the-ultimate-battery/
Erica Torres @ edn.com discuss about lithium-air batteries that looks promising for future use. Although scientists are still working toward replacing lithium-ion (Li-ion) batteries with lithium-air (Li-air), or lithium-oxygen, batteries, researchers at the University of Cambridge have developed a lab-based demonstrator of such a battery. It is safe to say we still have another decade before […]
LiFePO4 charger
https://www.electronics-lab.com/lifepo4-charger/
Markus Gritsch shared his LiFePO4 charger project in the forum: Since I really like using LiFePO4 AA and AAA batteries in some of my projects, I finally gave in and built a dedicated charger for them. Previously I used a lab power supply to mimic the constant current/constant voltage charging curve, which worked also fine. […]
Not a battery, not a cap: Murata’s small energy [storage] device
https://www.electronics-lab.com/not-a-battery-not-a-cap-muratas-small-energy-storage-device/
by Graham Prophet @ edn-europe.com: To meet what the company sees as a gap in the available range of energy storage solutions, Murata has developed the UMAC, a small, high-capacity cylinder-type energy device for use in wearable and wireless sensor applications. Although lithium-ion based, Murata differentiates it from a battery. The UMAC is a miniature device […]
Power Management Solutions: Battery Chargers
https://www.electronics-lab.com/power-management-solutions-battery-chargers/
Maurizio @ dev.emcelettronica.com writes: Out of all portable devices, the most numerous are the mobile phones (Figure 1). Most of them feature Li-ion or Li-polymer accumulators and Freescale has a broad range of charger ICs dedicated to supporting all the phases of a complete recharge cycle. Generally speaking the charging of a mobile phone is […]
Charger interface IC avoids handset overheating at fast-charge rates
https://www.electronics-lab.com/charger-interface-ic-avoids-handset-overheating-at-fast-charge-rates/
by Graham Prophet @ edn-europe.com: Power Integrations offers a charger interface IC compatible with Qualcomm’s Quick Charge 3.0 specification; PI says its CHY103D IC optimises efficiency to prevent handset overheating during high-speed charging. Added to the ChiPhy charger-interface IC family, PI saya this is the first IC for off-line AC-DC chargers compatible with the Quick Charge […]
Arduino Battery Shield
https://www.electronics-lab.com/arduino-battery-shield/
This instructable is about making battery shield for Arduino. Arduino Battery Shield – [Link]