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  2. Vehicle audio - Wikipedia

    en.wikipedia.org/wiki/Vehicle_audio

    Mobile audio power amplifiers. Amplifiers increase the power level of audio signals. Some head units have built-in stereo amplifiers. Other car audio systems use a separate stand-alone amplifier. Every amplifier has a rated power level sometimes noted on the head unit with the built-in amplifier, or on the label of a stand-alone unit.

  3. Automobile auxiliary power outlet - Wikipedia

    en.wikipedia.org/wiki/Automobile_auxiliary_power...

    Most cars nowadays are designed with a battery-negative earthing system and therefore have a +12V positive power distribution. In such a case, the centre pin of a plug/socket will be +12V DC and the outer casing 0V.

  4. A23 battery - Wikipedia

    en.wikipedia.org/wiki/A23_battery

    Left to right: AA, AAA, AAAA, N (E90) and A23 batteries An open A23 battery showing the LR932 cells with an intact battery. The A23 battery (also referred to as 23AE, GP23A, V23GA, [1] LRV08, [2] 8LR932, [3] 8LR23, MN21, L1028 or ANSI-1181A) is a dry battery consisting of eight LR932 cells, with a nominal voltage of 12 V.

  5. Audio power amplifier - Wikipedia

    en.wikipedia.org/wiki/Audio_power_amplifier

    Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus 1 Hi Fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.

  6. Ford Explorer - Wikipedia

    en.wikipedia.org/wiki/Ford_Explorer

    245 cu in (4.0 L) SOHC 12V V6 ... and a double-DIN radio panel. ... Bluetooth is now standard as is a 250 amp alternator, Ford Telematics, and dual-zone front ...

  7. Wireless power transfer - Wikipedia

    en.wikipedia.org/wiki/Wireless_power_transfer

    No radio-frequency interference to existing radio communication such as Wi-Fi and cell phones. Access control: only receivers hit by the laser receive power. Drawbacks include: Laser radiation is hazardous. Without a proper safety mechanism, low power levels can blind humans and other animals. High power levels can kill through localized spot ...