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Thread: Summary on Tank Circuits

  1. #1
    Maximum Bitrate starfox's Avatar
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    Summary on Tank Circuits

    Hey everyone, i've posted a short newbie FAQ on tank circuits and what they're used for in the newbie area.

    FAQ: Tank Circuits (Adding a Second Battery)

    If anyone has comments, corrections, needs to slap me for saying something stupid please PM me so i can revise the article!

  2. #2
    Newbie
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    well said mate....

    probably the best thing to do is d your homework and plan your project well in advance, research articles ie such as mp3car forums about what works and what doesnt, tried and tested methods, or just copy somebody elses proven project.
    and then put your project together,
    in the long run it will save you hours of your time and not to mention money.
    peugeot 406 HDI GTX Carputer
    shuttle sn41g2,amd2500xp,512 ddr ram
    64 meg agp,gps,dvd rom,autoroute 2004
    media engine 2.0+other stuff
    15" active matrix screen(v nice)
    handtrack mouse+mini usb kb,opus 150w
    sound wired into car audio system

  3. #3
    Raw Wave
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    Good one starfox

    Sorry I cant think of anything else to add.

  4. #4
    FLAC robiewp's Avatar
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    two things, neither of which matter
    Many amplifiers and audio head units will already do this. You may have noticed that when you start your car, these switch off momentairily until the voltage is stable again.
    devices such as head units are usually powered by the accessory wire, which on most cars switches off completely durring crank, regardless of available juice

    -A tank circuit is a circuit which attempts to stop your computer from rebooting when you start your car.
    I'm not sure if tank is a technical term with a specific definition that excludes this, but I thought a tank circuit could be any additional source of power, for whatever purpose. I've been calling my 2nd car battery a 'tank circuit' (maybe wrongly so?). Besides preventing reboot on crank (i would say not its main purpose), it lets me run the car computer for two hours or keep it in suspend over a full weekend without worrying about getting stranded with a dead battery.

    Overall good informative article
    car computer rev 5: 8" lilliput and usual suspects

  5. #5
    FLAC
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    Starfox,

    Good job on the FAQ! I believe the term "tank" originated with a LC (inductor/capacitor) combination used in a filter or oscillator (at least that's the term I used years ago when doing RF design). Perhaps someone in the car audio business was trying to emulate an audio noise filter by adding a large capacitor...

    Anyway, thanks for your contribution to the community!
    MikeH

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