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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Jan 13, 2008 11:49 am Post subject: I miss the Evil Twin. I lost the tse gamma design |
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I was thinking of building Scott's gamma design for a fun project. The only place I remember seeing it was at the Evil twin. Did anyone save the latest revised design before the Twin folded? Thanks,
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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dochlywd
Joined: 25 Apr 2006
Posts: 346
Location: Saint Louis, Missouri
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sun Jan 13, 2008 2:12 pm Post subject: |
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Why not just ask tse? He is a member here and he knows the design best. 
_________________
My current list of PJ's AmPro 1 1/2-4600,4200, 1/2-3600,2600.
I do love my AmPro's
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Jan 13, 2008 3:25 pm Post subject: |
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| papalek wrote: | | Why not just ask tse? He is a member here and he knows the design best. |
I could have directed the post to Scott but if someone has it, it would save him the trouble of digging it up.
OK, out to the laboratory to test out my new HD Fury and see how well it couples to my gooned-up Ampro.
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Sun Jan 13, 2008 4:38 pm Post subject: |
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Here are all the files I can add as an attachment here...
Also found this:
Clarence wrote 08-24-05 01:00 PM :
Mux C13 100nF
Mux C14 100nF
Mux U8 74HC4053
In the “Misc” circuit, I renamed (in red) the duplicate C5 to C22:
Misc C5 22uF
Misc C22* 22uF
Misc C19 100nF
Misc D3 1N4002
Misc D4 1N4002
Misc F1 RXE040
Misc F2 RXE040
Misc J101 RawPwrIn 8v 15v
Misc J102 RegPwr 5v
Misc U3B/C/D 74HC86
Misc U4 MC7805
Misc U5 MC7905
Clamp R14 2.2K
Clamp R19 10K
Clamp R20 100
Clamp R21 50K variable
Clamp C16 100pF
Clamp C17 100nF
Clamp C18 100pF
Clamp U9A 74HC4538
Clamp U9B 74HC4538
In the “Video” circuit, I renamed (in red) the duplicate “R1” to “R7”:
VID_R R1 2.4K
VID_R R7* 120
VID_R R2 430
VID_R R3 360
VID_R R4 75
VID_R R5 75
VID_R R6 75
VID_R R13 47K
VID_R C1 1000pF
VID_R C2 1000pF
VID_R C3 10uF
VID_R C4 10uF
VID_R C5 10uF
VID_R C6 1000pF
VID_R C7 1000pF
VID_R C8 10uF NP
VID_R D1 SD101A
VID_R D2 SD101A
VID_R U2 HFA1100
VID_G R1 2.4K
VID_G R7* 120
VID_G R2 430
VID_G R3 360
VID_G R4 75
VID_G R5 75
VID_G R6 75
VID_G R13 47K
VID_G C1 1000pF
VID_G C2 1000pF
VID_G C3 10uF
VID_G C4 10uF
VID_G C5 10uF
VID_G C6 1000pF
VID_G C7 1000pF
VID_G C8 10uF NP
VID_G D1 SD101A
VID_G D2 SD101A
VID_G U2 HFA1100
VID_B R1 2.4K
VID_B R7* 120
VID_B R2 430
VID_B R3 360
VID_B R4 75
VID_B R5 75
VID_B R6 75
VID_B R13 47K
VID_B C1 1000pF
VID_B C2 1000pF
VID_B C3 10uF
VID_B C4 10uF
VID_B C5 10uF
VID_B C6 1000pF
VID_B C7 1000pF
VID_B C8 10uF NP
VID_B D1 SD101A
VID_B D2 SD101A
VID_B U2 HFA1100
Sync C6 100nF
Sync C7 100nF
Sync C8 10nF
Sync C15 1nF
Sync D7 SD101A
Sync D8 SD101A
Sync J7 BNC
Sync J8 BNC
Sync R4 1K
Sync R6 1K
Sync R10 22K
Sync R11 22K
Sync R13 4.7K
Sync R16 10
Sync R18 47K
Sync R23 100
Sync U3A 74HC86
Sync U6 LM311
SH_R C9 330nF
SH_R C10 10nF
SH_R C11 100nF
SH_R C12 100nF
SH_R R2 10K
SH_R R3 33K
SH_R R7 2.2K
SH_R R8 4.7K
SH_R R12 100
SH_R R15 160K
SH_R R17 10K
SH_R R22 10K
SH_R R33 2.7K
SH_R U7A/B TL082
SH_G C9 330nF
SH_G C10 10nF
SH_G C11 100nF
SH_G C12 100nF
SH_G R2 10K
SH_G R3 33K
SH_G R7 2.2K
SH_G R8 4.7K
SH_G R12 100
SH_G R15 160K
SH_G R17 10K
SH_G R22 10K
SH_G R33 2.7K
SH_G U7A/B TL082
SH_B C9 330nF
SH_B C10 10nF
SH_B C11 100nF
SH_B C12 100nF
SH_B R2 10K
SH_B R3 33K
SH_B R7 2.2K
SH_B R8 4.7K
SH_B R12 100
SH_B R15 160K
SH_B R17 10K
SH_B R22 10K
SH_B R33 2.7K
SH_B U7A/B TL082
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Last edited by Tom.W on Sun Jan 13, 2008 7:36 pm; edited 3 times in total
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Sun Jan 13, 2008 6:27 pm Post subject: |
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Chip, I have a completed card here I could let you borrow if you would like to test it first...
Last edited by Tom.W on Mon Jan 14, 2008 6:06 am; edited 1 time in total
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Sun Jan 13, 2008 6:55 pm Post subject: |
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Good job Tom!  I thought I had saved it all but it turns out I only had a fraction of it. This gets burned to a CD this time.
I wish I had the savvy to build one. 
Can this be made to be adjustable without any major design changes? I didn't see a pot on the list so I can assume it's not? Would the insertion of a pot in place of a key resistor make it so? (yup...non EE over simplifying) 
Greg
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Sun Jan 13, 2008 7:46 pm Post subject: |
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All thanks go to tse !
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Jan 13, 2008 8:36 pm Post subject: |
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| Tom.W wrote: | | Chip, I have a completed card here I could let you borrow you if you would like to test it first... |
Yes, I would like to try it. I'll PM the info. Also, do you still have the Sencore rejuvinator? I have a P19 blue that I'd like to give a shot to.
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Mon Jan 14, 2008 12:44 am Post subject: |
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Hi Chip. Got your PM but unfortunately I just sent the Sencore in for factory calibration. Will ship tse's card out to you for a bit of testing. All inputs and outputs are via BNC connectors with combined HV sync. If you would like you can ship the tube to me in a couple weeks. What problem are you having with it ?
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Mon Jan 14, 2008 5:14 am Post subject: |
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Me Too!!
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Tue Jan 15, 2008 1:57 am Post subject: |
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If anyone wants to build one of these or modify the gamma curve of the one that they have just yell. I'll be glad to help.
Scott
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"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Tue Jan 15, 2008 2:44 am Post subject: |
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Thanks Scott !
It would be nice to be able to fine tune the gamma curve
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Tue Jan 15, 2008 3:00 am Post subject: |
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Just read your PM Scott. Looks like it might be a little difficult to adjust the gamma curve. Can you please post the revision you sent me here ? Having a problem with the GIF file.
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Tue Jan 15, 2008 5:50 am Post subject: |
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Ok here it is .
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Tue Jan 15, 2008 6:09 am Post subject: |
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Scott could you attach the gerber files for the pcb ?
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Mad Mr H
Joined: 07 Mar 2006
Posts: 641
Location: London , England
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| Posted: Tue Jan 15, 2008 3:03 pm Post subject: |
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Hi Guys,
In december 2007 I gave up the newer URL for the evil twin as I believe there are enough CRT based forums already.
The Evil twin was originally designed so a small group of people could discuss designs related to CRT advance. I was not part of the original group.
Sadly some of these designs were used by some for financial gain. There will always be those that are corrupt, But they all get caught in the end.
The idea was that these designs could be built by anyone for free.
SO MANY MANY THANKS to TSE and others who contributed and continue to do so.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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jcmccorm
Joined: 15 Jan 2008
Posts: 21
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| Posted: Tue Jan 15, 2008 6:50 pm Post subject: |
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Hey guys, I'm just following the circuit to see what Scott has done there. Is it complete? Where does /Sample go? What about RED and RED_SW? Seems like something is missing. Thanks.
Cary
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