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Thread: Problems with new PSU

  1. #11
    MySQL Error soundman98's Avatar
    Join Date
    Jan 2008
    on the border of northern IL/IN
    backwards-- a psu is closer to a battery then a charger

    ac-dc power supplies have tighter regulation because many devices that require dc power in a ac-environment cannot take loosely regulated power(loose/tight regulation refers to how close the output stays at a certain voltage--loose reg. will fluctuate some)

    battery chargers typically do put out a slight amount of ac ripple(or called loose dc regulation) to prevent, and/or break apart oxidation on lead acid battery plates...

  2. #12
    Raw Wave
    Join Date
    Nov 2009
    I think of chargers as being high in ripple merely to save money (since they don't need smooth dc). After all, a battery usually behaves like a capacitor (it filters out ac).

    And yes - pulsing is used to de-sulfate plates etc. (But they wouldn't give us something for nothing LOL! - not with all these wanker 2300mA, 3200mA, 4500mA variants ...)

  3. #13
    Maximum Bitrate nasa's Avatar
    Join Date
    Aug 2006
    Thanks everyone,

    have the setup in the car and all is running...

    Except, it's not to what is/was mentioned in the manual:

    "Sends ON pulse to motherboard when ignition is ON for more than 2 seconds,"

    But yet it takes 10 seconds for the fan on my computer to come on and another 6
    before the computer actually starts... Is there a reason for this?

    Thanks again

  4. #14
    Maximum Bitrate nasa's Avatar
    Join Date
    Aug 2006
    On this psu question...

    Is it really the PSU or could the motherboad have something to do with it? It seems really odd that with 2 different DC-DC adapters it takes 10 - 15 seconds before I hear the fan spin up and another 6 seconds before the BIOS screen appears. I would have expected that after the ON signal is sent from the adapter, the MB would go into BIOS checking right away (power is already available) or am I missing something...

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