/mAcTX_LC

Adapter to use an ATX power supply with a Macintosh LC series computer

BSD 3-Clause "New" or "Revised" LicenseBSD-3-Clause

mAcTX_LC

Adapter to use an ATX power supply with a Macintosh LC series computer

Background

These files were originally developed by blusnowkitty on the 68kMLA forum. They are being archived here so that the community can make updates/changes/improvements as needed and to provide a location for documentation and assembly instructions. https://68kmla.org/bb/index.php?threads/mactx-lc-boards.38912/

Once again, here's the mAcTX LC KiCad project. Public domain, do whatever, yadda yadda; I just ask 
that you don't use the mAcTX name if you use this in your own project and don't sell for profit. 
This only covers the LC version as the mAcTX IIc is owned by compgeke and it's his choice if he
wants to open-source, public domain, or keep the files private.

Overview of mAcTX_LC

Pictures

Some images from the 68kmla forums:

Bill of Materials

Version 1.3 Bill of Materials

Reference Description Digikey Mouser
R1 10k Resistor PR01000101002JR500 TBD
R2 10k Resistor PR01000101002JR500 TBD
C1 10uF Capacitor Rubycon 100YXF10MEFC6.3X11 TBD
C2 10uF Capacitor Rubycon 100YXF10MEFC6.3X11 TBD
J1 ATX Power Connector Molex 39-28-8240 Molex 39-28-8240
U1 Max660 Charge Pump LMC7660IM-NOPB TBD

NOTE: THESE COMPONENTS HAVE NOT BEEN VALIDATED!!! ORDER THESE AT YOUR OWN RISK

Version 2.0 Bill of Materials

Reference Description LCSC
R1 10k Resistor C17903
R2 10k Resistor Value C17903
C1 10uF Capacitor C72485
C2 10uF Capacitor C72485
J1 ATX Power Connector TBD
U1 Max660 Charge Pump C434489

NOTE: THESE COMPONENTS HAVE NOT BEEN VALIDATED!!! ORDER THESE AT YOUR OWN RISK

Other part numbers

https://tinkerdifferent.com/threads/macintosh-connector-part-numbers.135/

Board

Version 1.3

Version 1.3 Schematic

mAcTX LC Top Image mAcTX LC Bottom Image

Version 2.0

Screen Shot 2022-02-20 at 4 55 33 PM

Screen Shot 2022-02-20 at 4 56 36 PM

Assembly instructions

  • TBD

Other versions

Androda (https://androda.work/) is making a follow-on project called The LC MACAA Power Supply. Watch https://androda.work/shop/ for updates.

Connector notes