[coco] A couple of PC hardware questions

[peak at mail.polarcomm.com]

Dave
Thanks for the info about cyberguys.
A load resistor would be great for testing but once you have 
enough coco drives connected you no longer need the heat 
generator(ha ha). I used an old MFM drive as a load for two 
reasons:
1 I already had some laying around.
2 The connector on those is made to plug into a PC power 
supply.
Eric
Hardware Hacker 

---- Original message ----
>Date: Tue, 20 Jan 2004 11:53:11 -0500
>From: David Hazelton <davehazelton at access-4-free.com>  
>Subject: Re: [coco] A couple of PC hardware questions  
>To: CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
>
>peak at mail.polarcomm.com wrote:
>
>> Ray
>> I have re-packed my coco3 into a case using an ATX power 
>> supply! There were some difficulties.
>> An ATX power supply has some special features because it 
is 
>> Turned on by the computer motherboard and not by the front 
>> powers switch on the computer. ----WHY??---
>> Vsb is +5volts which is always on provided that the rocker 
>> switch on the back of the power supply is on and the power 
>> cord is plugged in. (Voltage Stand By).
>> VSB is used by the motherboard to turn on the computers 
power 
>> supply depending on certain conditions.
>> One of those conditions is that the operator presses the 
on 
>> switch on the front of the computer.
>> Another condition is that there is a suficient load on the 
>> power supply.
>> To turn on an ATX supply try this:
>> Connect an old MFM hard drive to the supply.(load)
>> Connect the ATX "PS-ON" wire to ground.
>> Check to see if it turns on.
>> Eric
>> 
>> 
>I believe www.cyberguys.com has a "ATX to AT Conversion 
Cable" and 
>"Switch for ATX to AT Conversion Cable"  to use ATX power 
supplies in 
>older AT computers.  Also I believe that they have a "Power 
Supply Load 
>Resistor" that does what your MFM drive test does, just 
neater and less 
>noise.
>
>Also they have neat items, like "USB Coffee warmers" 
and "Fan Cooling 
>mice" for those real programmers
>
>
>(Not an endorsement of Cyberguys, just I get their catalog 
and have 
>bought items from them, that I have not seen else where. )
>
>
>~David Hazelton
>
>
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