[Coco] tandy 1000 ex/hx external 720k drive to use on coco

[Bob Devries]

Hi Gene,

Actually, if you search for disk drive power adapter on eBay, you'll 
find a SMPS with a 4 pin plug suitable to connect to a 5.25" drive. They 
vary in output power ratings, but have both 5v and 12v.

Regards, Bob Devries
Dalby, QLD, Australia


On 20/06/2015 11:39 AM, Gene Heskett wrote:
> On Friday 19 June 2015 21:27:52 Josh Harper via Coco wrote:
>> is there anyway to hook up a power adapter that plugs into the wall
>
> Most such adaptyors are single voltage devices, so you would need a 5
> volt, amp or so, and a 12 volt, amp or so.  Sorta unhandy, so I've made
> use of the drive conectors on an old XT supply that lives in the bottom
> of a drive tower, to power, in my case, the whole maryann including the
> coco3 and MPI.  But thats a lot more complex than just using an old pc
> psu, which has all those voltages already wired to its drive plugs.
>
>>        From: Bill Pierce via Coco <coco at maltedmedia.com>
>>   To: coco at maltedmedia.com
>> Cc: Bill Pierce <ooogalapasooo at aol.com>
>>   Sent: Friday, June 19, 2015 7:23 PM
>>   Subject: Re: [Coco] tandy 1000 ex/hx external 720k drive to use on
>> coco
>>
>> The external drive he is referring to has the standard 3.5 4 pin plug
>> (internally) and all it needs is an adapet to the larger 4 pin used on
>> Coco 5.25 drives. The ribbon cable should be fine, it just needs a 3.2
>> connector pressed on.
>>
>> I had one of these drives and it took me about  15 mins to hook it up.
>> You just remove all the T-1000 crap internally, then it's a standard
>> 3.5 drive with no power supply.
>>
>>
>>
>>
>>
>>
>> Bill Pierce
>> "Charlie stole the handle, and the train it won't stop going, no way
>> to slow down!" - Ian Anderson - Jethro Tull
>>
>>
>>
>> My Music from the Tandy/Radio Shack Color Computer 2 & 3
>> https://sites.google.com/site/dabarnstudio/
>> Co-Contributor, Co-Editor for CocoPedia
>> http://www.cocopedia.com/wiki/index.php/Main_Page
>> Global Moderator for TRS-80/Tandy Color Computer Forums
>> http://www.tandycoco.com/forum/
>>
>> E-Mail: ooogalapasooo at aol.com
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Bruce W. Calkins <brucewcalkins at charter.net>
>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>> Sent: Fri, Jun 19, 2015 5:00 pm
>> Subject: Re: [Coco] tandy 1000 ex/hx external 720k drive to use on
>> coco
>>
>>
>> The 4 pin connector (many Tandy 1000's did not have one and shunted
>> power
>>
>> through the ribbon cable.) should be the standard 3.5" floppy power
>> connector.
>> A picture and model numbers might help identify the drive.  On
>> the Tandy floppy
>> drives without the 4 pin connector some of the ground lines
>> carried the power
>> and traces needed to be cut and power lines tapped in.
>> Not an easy project
>> unless you are proficient reading schematics and/or
>> tracing PCBs.  I converted
>> one 720k 3.5” Tandy 1000 drive about 20 years
>> ago and would not bother doing
>> another.  Although 1.44M 3.5” are getting
>> hard to find nowadays.
>>
>> Bruce
>> W.
>>
>>
>>
>>
>>
>> ----- Original Message -----
>>
>> From: "Josh Harper via Coco"
>>
>>> I have
>>
>> a tandy 1000 ex/hx external 720k floppy drive that I want to
>>
>>> convert to coco
>>
>> use
>>
>>> ive taken out the pcb that was in the case that was hooked up to the
>>
>> drive
>>
>>> I have the ribbon cable to hook to the drive and the coco
>>> my issue is
>>
>> I need to know how to get power to the drive,the power
>>
>>> connector is a 4 pin
>>
>> connector
>>
>>> thanks guys for all ur help
>>>
>>> --
>>
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>
> Cheers, Gene Heskett
>