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Author Topic: I RGB modded my Super Grafx  (Read 606 times)

SuperPlay

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Re: I RGB modded my Super Grafx
« Reply #15 on: February 26, 2011, 02:43:46 AM »
Do you have a picture/layout of your amp board (front/back) that you could share?

If you have that would be of a great help.

Thanks
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gtsamour

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Re: I RGB modded my Super Grafx
« Reply #16 on: February 27, 2011, 04:18:56 PM »
They layout schematic of the amp is already posted in my initial pictures.
The front of the amp is visible on my previous pictures. When i have the time I'll take a photo of the back and post it.
« Last Edit: February 27, 2011, 04:21:35 PM by gtsamour »
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gtsamour

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Re: I RGB modded my Super Grafx
« Reply #17 on: February 28, 2011, 02:22:26 AM »
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SuperPlay

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Re: I RGB modded my Super Grafx
« Reply #18 on: February 28, 2011, 03:28:27 AM »

Thanks gtsamour :-)

I was trying to create the layout using standard track veroboard and was wondering how you managed to get it so compact ;-) Now I see that you are using a spot pin style of board.

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gtsamour

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Re: I RGB modded my Super Grafx
« Reply #19 on: March 02, 2011, 10:41:21 PM »
Well, its not compact enough... I don't seem to be able to fit this thing into my Core Grafx II, this console is too small and there's just not enough space in it :( I have to think of something... I hate to have to install the amplifier externally as part of the RGB- Scart cable.
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incrediblehark

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Re: I RGB modded my Super Grafx
« Reply #20 on: March 02, 2011, 11:48:58 PM »
very very nice work! Clean and professional looking. As for the coregrafx, have you tried mmmonkey's amp method? http://www.mmmonkey.co.uk/console/pce/amp.htm he just uses 3 transistors in the scart cable. I wonder how picture quality compares to your amp. (haven't tried it yet myself)
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gtsamour

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Re: I RGB modded my Super Grafx
« Reply #21 on: March 03, 2011, 04:36:03 AM »
Yes I've seen this 3 transistor amp. I've also read that there is a danger of wrecking the video out chip of the console if you don't use the whole resistors-capacitors-transistor cirquit.
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incrediblehark

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Re: I RGB modded my Super Grafx
« Reply #22 on: March 03, 2011, 07:38:37 AM »
AH! Thats good to know, i was planning on going that route myself because it seemed the easiest but now I'm hesitant to try it out.
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gtsamour

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Re: I RGB modded my Super Grafx
« Reply #23 on: March 03, 2011, 04:22:06 PM »
I'm not an expert in electronics, (i merely copied a simple cirquit) but I remember that it had to do something with the impedance of the cirquit needing to be 75 Ohm, which isn't the case in the 3 transistor amp mod.
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fraggore

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Re: I RGB modded my Super Grafx
« Reply #24 on: June 11, 2012, 08:45:57 AM »
that's a very tidy bit of work there.
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CPTRAVE

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Re: I RGB modded my Super Grafx
« Reply #25 on: June 12, 2012, 07:01:02 PM »
Wow! Good job would love to see that in person.
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