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Thread: Power Supply (Astec) Wiring Questions

  1. #1
    Variable Bitrate
    Join Date
    Jul 2000
    Ottawa, Canada

    Question Power Supply (Astec) Wiring Questions

    OK, I've got my Astec DC-DC PSU from MPJA and so far I've wired all the connections on the output side up to my PC. Now I'd like to test the PSU inside so I bought a AC to 12VDC adapter. I connected the wires and plugged the hole deal in and I got nothing. 12v got as far as the wires on the input side of the PSU put nothing came out the other end.

    The adapter supplies 12V @ 500mA... is this enough?
    (Yes, I've got pins 19 and 20 connected)

    I'm also wondering if the POK pin on the output side is suitable for use as the power good signal. The Docs that can with the supply say this about it...

    POK - Active high with 100mS to 500mS delay after all rails are in regulation
    [SIZE=1]'91 Nissan Stanza

    Car Totaled and i bought a 20G mp3 player
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  2. #2
    Retired Admin Aaron Cake's Avatar
    Join Date
    Jan 2000
    London, Ontario, Canada


    500mA @ 12V is nowhere near enough. I'm not sure about the ratings of the Astec unit, but you will probably need a supply of at least 5A to run a PC. Mine takes about 9 surge and runs at 4.5. This is with the Arise computer DC-DC.

    Aaron Cake
    London, Ontario, Canada

    Player: Cyrix 200, 32MB RAM, 10.2Gig Quantum HD, Onboard EtherNet/Sound/Video, Custom Lexan Case, Win95 Kernal w/Custom Player
    Car: '86 Mazda RX-7 w/Basic Performance Upgrades
    Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
    Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight
    "If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."


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