[Coco] MC6847 + Component video

[Zippster]

We have options!  :)  The negative supply on the second circuit is no problem, the MAX1720 is about .60 at Mouser.
Whichever one gives the best result would be my vote.

- Ed

> On Apr 24, 2015, at 9:08 AM, Joe Grubbs <jsgrubbs at hotmail.com> wrote:
> 
> Cool! We have three circuits to test. One of them is discrete and runs happily on 5v. The second uses commonly available opamps but needs an external supply or a dc to dc converter. The third uses a somewhat esoteric opamp from AD but it can run on 5v. It would be best to use commonly available parts though because AD is prone to discontinue products with little notice :-/
> 
> 
> 
> 
> --- Original Message ---
> 
> From: "Zippster" <zippster278 at gmail.com>
> Sent: April 24, 2015 9:54 AM
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Subject: Re: [Coco] MC6847 + Component video
> 
> Joe, I can design PCBs if that’s needed once the circuit is tested/tweaked.
> Two layouts should be able to cover any CoCo1/2.
> 
> - Ed
> 
> 
>> On Apr 23, 2015, at 2:50 PM, Joe Grubbs <jsgrubbs at hotmail.com> wrote:
>> 
>> And we have a circuit breadboarded :) Won't be able to test drive it until I get back from Chicago. If it works, and more importantly performs well, how much interest is there? I know that neither him or I have the time to build anything beyond very small numbers, so if there is a high demand, it would be best to hand the design off to someone that is better equipped.