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Thread: 200 Watt DC-DC PSU

  1. #11
    Maximum Bitrate mobileh1's Avatar
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    16A through those wires will be **just fine**.

    Also, I know its a small point, but worth mentioning, a hydraulic motor uses fluid to drive it, not electricity
    .//Daren
    (Epia M10000/C134) (C137/MII 10000) Liliput /Opus 150W/DVD/512MB/80GB/Hummer H1
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  2. #12
    FLAC mbkowns's Avatar
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    Have fun survive'n a crank....
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  3. #13
    Maximum Bitrate mobileh1's Avatar
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    There is only *one*sure fire way to survive a crank with a load like a computer draws, and that is an auxillary isolated battery. Especially in a diesel where the glow plugs cycling draw a huge current. My vehicle has two (in parallel) batteries for cranking, and one for the electronics, the alternator charges all three, but the 3rd battery is isolated from the others. The cranking batteries are deep cycle Optima yellow tops, and the electronics battery is an Optima red top.
    .//Daren
    (Epia M10000/C134) (C137/MII 10000) Liliput /Opus 150W/DVD/512MB/80GB/Hummer H1
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  4. #14
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    mobileh1 .... can a like 2 or 3 farad capasitor do that job too ?? instead of having 2 batteries or in your case 3 ??

    I've seen people with killer sound in their car , with capasitors , crank the motor and sound keeps going ,,, also the capasitor is used for when the amps need more power (powerfull amps heh)



    I may be wong ... I would like to know how it should really be done if im wrong ..

  5. #15
    Maximum Bitrate mobileh1's Avatar
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    Thats a very interesting idea. I suppose so. The problem would be that the capacitor has to 'absorb' enough energy before it can provide its resovoir effect and provide power while the batteries are cranking the engine. So between the ignition switching on, and the voltage drop I would not think that there would be enough time for the capacitor to charge up. Typically a capacitor this capacious would be used very close to an amp to provide a little extra when the amp is drawing peak loads.

    Interesting thought though. I'll have to think about that some more. If it could be workable, it would certainly be a cost effective solution.
    .//Daren
    (Epia M10000/C134) (C137/MII 10000) Liliput /Opus 150W/DVD/512MB/80GB/Hummer H1
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  6. #16
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    yeah , I think ive seen it power the whole radio thing and amps peaking and all WHILE the car was starting .. but i think this guy had like 4 , 3 farad capasitors ... monsters .. but he also had like 4000 watts or whatnot

    I also hear those capasitors will prevent the battery from draining when you are playing when the engine is off ....... dont know if its true though .. people talk lotsa "crap" ....

  7. #17
    Low Bitrate Deadnick's Avatar
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    I think I may try the running off my cap when I get this thing. I have a 1f rockford fosgate cap and it backs up my 1000watt amp in my trunk just fine through a crank. Also note that a cap will hold a charge and isn't just a buffer. Its more like a battery and you usually have to charge them before installing them. I discharged my cap once after my car was off for a day and it welded a screw driver acorss the posts I think its holding a bit of power in it

  8. #18
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    Can't wait to hear how it works. I was going to get one, but I haven't seen/heard anything about it on here. Maybe it's me, but surviving a crank isn't such a big deal.

  9. #19
    Low Bitrate Deadnick's Avatar
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    Yeah I don't really care if it can survive a crank or not I'll worry about that later after I have a PC to begin with

  10. #20
    Constant Bitrate spectrrr's Avatar
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    little late in the thread but umm, DAMMMM!
    $60 for a 200w dc/dc psu? that seems like a hell of a deal to me!

    too bad he's not selling anymore at the moment... gotta keep my eyes on that one.

    thats an interesting idea with the cap's..... I was still planning on using a 2 year old Optima red top as my tank battery --> lets me start the car if the primary one goes dead, and keeps the carputer from running the primary dead =)
    2000 Jeep Cherokee
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