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Thread: Micro PSU component kits for 060 cards (A3660, B1260 etc)

  1. #1
    I Find Your Lack of Fat Disturbing Amibayer! tbtorro's Avatar
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    Default Micro PSU component kits for 060 cards (A3660, B1260 etc)

    Selling "micro PSU" component kits for a redesigned voltage regulator circuit for all 060 cards that use the the LT108x series voltage regulators for generating 3.3V from 5V (like: LT1084-3.3, LT1085-3.3 etc). These kits are a drop in replacement for supplying the 060 CPU with stable 3.3V.

    The old regulators are obsolete, getting harder to find and sometimes fail. They also generate much more heat, and less stable voltage than these kits which use modern components.

    My measurements show about 50% drop in generated heat both on the surface of the regulator and also on most of the GAL chips (on A3660) compared to using LT1084-3.3 regulators. Also the supply voltage is much more stable and there is overall less noise. According to other tests, especially A3000 owners can benefit from a more stable 060 system using these regulators.

    Click image for larger version. 

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    BOM (check pictures above for correct orientation of chip and diodes):

    U1: TLV62569
    L1: 2.2uH
    R1:
    10k
    R2:
    2.21K
    C1,C2: 10uF
    D1,D2,D3: S1A

    Not my design, credit goes to Dennis van Weeren for the excellent work. The sale is for the components and the PCB only, won't be able to provide support. Please note that on some cards you need to mount the kit on the underside of the PCB (watch out for pin orientation, components should face the PCB in this case), or have it on some cables if there is not enough space. The PCB is larger than the original heat sink of the LT1084 so it's only a straight installment to the A3660 cards. But apart from physical constraints it would work with any card that uses the same regulator.

    I'm asking 15 per kit + PP fees + shipping.

    Shipping to Europe is 5€ unregistered parcel (at your own risk). Or 17.20€ registered.

    As per forum rules: If you only write "Interested" on the thread, nothing will happen until you send a PM. You need to send a PM (Personal Message) with how many kits you need and your address exactly as it should show on the parcel. No cherry picking please (can I have x without y) what is listed on sale is what you get.

    Feedback: Please leave feedback as per the site rules after you've received your stuff. Here is a guide how:
    http://www.amibay.com/showpost.php?p=60784&postcount=3

    Please have a look at my other new Commodore chips/parts listings:
    Brand-NEW-Amiga-4000-Rev-B-motherboard
    Amiga-4000-A3660-CPU-card-including-Rev-5-CPU-NEW-professionally-built
    NEW-Amiga-4000-motherboard-component-packs-build-your-OWN-Amiga
    060-adapters-for-A3640-WarpEngine-spring-mini-sale
    Amiga-1200/600/CD32-Premium-recap-and-upgrade-service
    Amiga-4000-Premium-recap-and-upgrade-service
    Full-GAL-set-and-sockets-for-A3640-A3660-CPU-cards-NOS
    Video-repair-upgrade-kits-for-A1200/A600
    KickStart-3-1-4-ROM-chips-for-A1200/A600/A4000/A3000/A500/A2000
    A4000-RTC-repair-kits
    AGNUS-8372A-PAL-chips-(318069-02)-NOS
    DMAC-(390563-02)-for-Amiga-3000-A590-A2091-NEW-chips
    A3640-CPU-Cards-Rev-3-2-upgrade-chips-new
    Service-for-Amiga-4000-3000-2000-1200-600-A3640-A3630
    Last edited by tbtorro; 15th July 2019 at 01:38.
    cє<

  2. #2
    torsti76's Avatar
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    Hi,

    these should be usable for Voodoo3 cards as well. They use the 1082-3.3 which usually get quite hot and tend to fail.

    Just my 2 cents,
    Torsten

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    supaduper's Avatar
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    Interested in two kits, PM to follow

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    torsti76's Avatar
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    Also interested in 2 kits.

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    Teps71's Avatar
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    Interested in two kits. PM on the way.

  6. #6
    I Find Your Lack of Fat Disturbing Amibayer! tbtorro's Avatar
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    Quote Originally Posted by supaduper View Post
    Interested in two kits, PM to follow
    Payment received.
    cє<

  7. #7
    I Find Your Lack of Fat Disturbing Amibayer! tbtorro's Avatar
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    Quote Originally Posted by torsti76 View Post
    Hi,

    these should be usable for Voodoo3 cards as well. They use the 1082-3.3 which usually get quite hot and tend to fail.

    Just my 2 cents,
    Torsten
    Thanks for the update, good to know that the kit has more widespread application than expected

    - - - Updated - - -

    Quote Originally Posted by torsti76 View Post
    Also interested in 2 kits.
    Payment received.
    cє<

  8. #8
    I Find Your Lack of Fat Disturbing Amibayer! tbtorro's Avatar
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    Quote Originally Posted by supaduper View Post
    Interested in two kits, PM to follow
    Shipped
    cє<

  9. #9
    supaduper's Avatar
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    Kits received , super fast post , many thanks bud

  10. #10
    torsti76's Avatar
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    Received here, too. Off to the soldering station... Oh, feedback left.

    Update: Both kits built and working nicely.
    Last edited by torsti76; 5th July 2019 at 10:50.

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