[Coco] source of +5v on coco to drive HxC floppy emulator?

[Chad H]

I saw this thread and just realized its kinda similar to a project I'm
working on right now with my JVC camcorder.  My Camcorder has a AC-DC power
supply that puts out 5.2vdc to a odd JVC plug on for the camera.  I've been
trying to find a 12VDC(input) version of this adapter but so far to no
avail.  I've recently stumbled upon a all-in-one integrated component that
should solve my problem, and 'maybe' yours as well as an option. 

The datasheet is here... http://focus.ti.com/lit/ds/symlink/pt78ht205.pdf

They convert a wide range DC input down to 3.3vdc, 5.0vdc, 5.2vdc, etc.
(depending on the exact model you get).  I just don't know if there is a
12VDC power supply point in the CoCo that can drive this thing.  Perhaps
someone else could shed some light on that?

- Chad

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Brian Sturk
Sent: Friday, June 01, 2012 10:25 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] source of +5v on coco to drive HxC floppy emulator?

Thanks for all the ideas!  Given the current needed to drive the board (.5A
mostly for the SD card I guess) I'm going to use an external power supply
just to be safe and it will also allow me to use it w/ all of my Cocos
without having to modify the internals.

~brian

On Thu, May 31, 2012 at 06:36:44PM -0400, Bill Pierce wrote:
> Date: Thu, 31 May 2012 18:36:44 -0400 (EDT)
> From: Bill Pierce <ooogalapasooo at aol.com>
> To: coco at maltedmedia.com
> Subject: Re: [Coco] source of +5v on coco to drive HxC floppy emulator?
> 
> I have a AT keyboard interface in my Coco and it pulls the 5v off the 
> end of the last resister (top right looking down on the MB) on the 
> board. There's a couple of AT KB interface manuals on MaltedMedia and 
> they have diagrams as to where to get the 5v
> 
> 
> Music from the Tandy/Radio Shack Color Computer 2 & 3 
> https://sites.google.com/site/dabarnstudio/
> Bill Pierce
> ooogalapasooo at aol.com
> 
> 
> 
> 
> -----Original Message-----
> From: Brian Sturk <bsturk at comcast.net>
> To: coco <coco at maltedmedia.com>
> Sent: Wed, May 30, 2012 4:27 pm
> Subject: [Coco] source of +5v on coco to drive HxC floppy emulator?
> 
> 
> Hi everyone,
> I've done some searching on the web and it seems the only port(s) on 
> my Coco3 hat can supply +5V are the joystick ports.  I need +5V and 
> approximately .5 mps of current to drive the HxC floppy emulator which 
> I plan on using with my oco.  That seems like a lot of current for a 
> joystick, but I haven't been ble to find out if that is suitable or not.
> Any tips would be greatly appreciated.
> ~brian
> --
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--
.------------------------------------------------,------.
| Brian Sturk - http://home.comcast.net/~bsturk / C/C++ | .>   )\,^a__
|-------------------------. bsturk%comcast.net | Python |(  _ _)/ /-."~  
|http://www.telengard.com `--------------------`-------| `( )_ )/
| Telengard Technologies Inc - Win32/UNIX programming   |_<_s_<_s
`-------------------------------------------------------'

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