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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sun Nov 06, 2011 6:46 pm Post subject: ultra hdm late version and fixes. |
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shown here is a very late version ultra hdm (vdc) with some fixes.
can anyone tell me what these fixes are for.
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marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sun Nov 06, 2011 6:52 pm Post subject: |
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you have longbows, do these modifications look alike you say?
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Mon Nov 07, 2011 12:29 am Post subject: |
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There are two fixes there. One involves adding a larger heatsink and snubber network to the horizontal sweep supply switching transistor. There were some problems with running the sets at the 93kHz rate that alot of the simulator people use.
The other adds a little negative feedback to the linear width regulator circuit. It makes the sides "straighter" reducing the slight "s" shape that is normally there.
Scott
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