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In Reply to: How to Power the Memory - Part 1 Linear Regulator etc posted by jackwong96 on November 22, 2011 at 22:51:17:
How to make a 3-Terminal Regulator for H55M-UD21. Remove the choke as per photo.
2. Cut a small piece of PCB that will fill the gap.
3. File with a filing tool to ensure good fitting.
4. Prepare two resistors with strong leads that will pass through the two holes of the choke. One of the leads is for support purpose and there is no actual connection to the circuit.
5. Put the heatsink on the PCB to mark position. Do not put it too close to the P24 socket.
6. Drill holes for LT1083 and chokes
7. Place component on PCB. (I forgot to put resistor to adjust the regulator to 1.3V). Anyway, you will see the placement of components and connections more clearly in the next part.
8. Soldering. The resistor lead near the middle of the PCB is only soldered to the Mobo to provide support. There is no connection to the circuit in the PCB.
9. Connect In to 3.3V and Ground to P24.
Please see Part 2.2 for the circuit diagram. In part 2.2, an external supply will be built.
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