Question about Computers & Internet
Hi! I managed to get my hands on an industrial small form factor motherboard. I have all the components required to get it running... except for power.
It has a female 4 pin (mini/power) din jack, the kind that one often sees on external hard drives as well. What preventing me from using an external HDD adapter is that BOTH of the two live wires (the other two being ground) are 5V. All of the external HDD adapters i've seen have one 5V and one 12V.
So my question is this: would it be safe to get male and female connectors (to make an intermediate hookup) and connect the wires so that both 5V pins on the intermediate draws power off of the single 5V pin on the external HDD adapter? (see lovely ASCII diagram below) The board requires less than 10W and I have some adapters that are 2A and higher for the 5V pin.
||[ <===[ <===|||
||[ - female din on motherboard
<===[ - self-made intermediary with male din on left and female din on right
<===||| - male din on external HDD adapter
Should not be a problem, the theory here is Volts * Amps =Watts
5V * 2A = 10w
The alternative is to get a LM7505 ($1 or 2) from radioshack or any electronic supply and regulate the 12v down to 5v. its about 1/2 square IC chip.
Pardon my ASCII:
input 1.7V - 35V ________| | |_____ +5v (+/- 1%)
Pin 1 Pin 3
will accomodate 1 Amp (1.25 if heat sinked) for the CMOS version, slightly higher for the olde r(less effecient) version
The other pin is ground. OF course you will want to check the specs and pin assignment for the brand you buy, these are typical.
Posted on Jul 20, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 19, 2016 | Computers & Internet
Feb 17, 2013 | HP Media Center PC M260n (DF200A#ABA) PC...
Jan 16, 2013 | Computers & Internet
Oct 11, 2012 | Computers & Internet
Jun 24, 2012 | ASUS Computers & Internet
Feb 25, 2011 | Refrigerators
Dec 28, 2010 | Compaq System brd w tray for Evo D510 SFF...
Mar 08, 2010 | HP RT810UTABA - HP dc7700 small form...
Mar 01, 2009 | Dell OptiPlex GX280 PC Desktop
114 people viewed this question
Usually answered in minutes!