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2. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threa­ded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.

3. Backup battery - Wikipedia

   en.wikipedia.org/wiki/Backup_battery

   A valve-regulated lead-acid battery is a battery type that is popular in telecommunications network environments as a reliable backup power source. VRLA batteries are used in the outside plant at locations such as Controlled Environmental Vaults (CEVs), Electronic Equipment Enclosures (EEEs), and huts, and in uncontrolled structures such as ...

4. Helix Semiconductors - Wikipedia

   en.wikipedia.org/wiki/Helix_Semiconductors

   Helix Semiconductors, formerly Semitrex, is an Irvine, California-based fabless semiconductor company that designs chips for improved power management. The company's patented capacitive voltage reduction technology uses cascading capacitors to store power and convert voltages on chips, reducing the energy consumption of electronic devices.

5. Line 6 (company) - Wikipedia

   en.wikipedia.org/wiki/Line_6_(company)

   Line 6 is a musical instrument and audio equipment manufacturer, best known as a pioneer in guitar amplifier and effect modeling. [1] [2] The company's products include guitar effects, modeling guitar amplifiers, software, electric guitars, and wireless systems.

6. Creative Zen - Wikipedia

   en.wikipedia.org/wiki/Creative_Zen

   The package includes the player, a leather case with belt-clip, a lithium-ion battery, a USB cable, and a pair of standard earbuds. The Zen Xtra does not support the FM tuner from the original Zen and does not have recording capability. The Xtra was the first DAP to support RealNetworks's Helix DRM, through tailored firmware.

7. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   The offline/standby UPS offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power. When the incoming voltage falls below or rises above a predetermined level the UPS turns on its internal DC-AC inverter circuitry, which is powered from an ...