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Search Again :: Adv Search 513 results in 0.001s
<1234567…18>
  • New video about S-video on Spectrum 128 / +2I just made a video about an S-video modification on a Spectrum +2. Most of the technical details are in the video; if you have any questions about i…

    ... that connects the luminance output of the TEA2000 chip at pin ... fed to the luminance input of the TEA2000 using the coupling ... C31. The TEA2000 receives a combination of the luminance signal and ... both removed, so the TEA2000 luminance input no longer receives the ...
    rga24 rga24 October 2017 Hardware
  • Tea2000Hi Does anybody know of a stockist for the TEA2000 Chip or is their a replacement.

    Hi

    Does anybody know of a stockist for the TEA2000 Chip or is their a replacement.
    Martin Baugh Martin Baugh June 2007 Wanted
  • Tea2000Greetings! Prompt analog PAl/NTS Encoder - TEA2000? Has broken it is necessary to substitute, and I have not found the given type in free sale.

    Greetings! Prompt analog PAl/NTS Encoder - TEA2000? Has broken it is necessary to substitute, and I have not found the given type in free sale.
    Russian Russian December 2008 Hardware
  • Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …

    ... 15uH inductor mod to the TEA2000 and another for decoupling the ... is there any other color/luminance controls on the board I ...
    Questarian Questarian July 2015 Hardware
  • No VCC on the TEA2000 on a +2 greyI'm trying to fix a +2 grey that has no RF and composite out, RGB is good and the machine works just fine. I thought it would be an easy job... repl…

    ... on pin 11 of the tea2000 is absent... replaced the ztx ... vcc on pin11 of the tea2000.

    Voltage on all ...
    gtsamour gtsamour December 2016 Hardware
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... br />
    The luminance signal emerges from the TEA2000 at pin 7 ... point you would have a luminance output. The standard 128 composite ... The relative amplitude of the luminance signal coming out of pin ... pin 8 with the standard luminance signal, if this voltage ...
    rga24 rga24 September 2012 Hardware
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... to risk blowing up the TEA2000. Next to the ULA, that ... pin 7 (now Chrominance and Luminance) can be fed to transistor ... FM sound carrier onto the luminance signal must be removed just ...
    guesser guesser September 2012 Hardware
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... Pin 8 on the TEA2000, I separate the Luminance from the signal ...
    Johan1973 Johan1973 September 2012 Hardware
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... Pin 8 on the TEA2000, I separate the Luminance from the signal ...
    guesser guesser September 2012 Hardware
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... pin 8 LUMI (luminance input) of the TEA2000 as around 2.35V ... to pin 7 LUMO (luminance output) of the TEA2000. Then a 3K3 ... TEA2000 biased at the old black level.

    For the luminance ... pin 7 LUMO of the TEA2000.

    These two signals ...
    rga24 rga24 December 2012 Hardware
  • +2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…

    ... mention, I put the new luminance signal on pin 5 of ... is on pin 1 and luminance is on pin 5, thus ... buffer amplifier circuit for the luminance signal and the other is ... to pull the luminance input pin 8 of the TEA2000 up to ...
    rga24 rga24 December 2012 Hardware
  • +2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…

    ... of the basic TEA2000 circuit because there is no luminance delay line ... so the chrominance and luminance signals are not aligned, and ...
    guesser guesser December 2013 Hardware
  • +2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…

    ... of the luminance output is fed back into the TEA2000 chip, ... />
    To make separate luminance and chrominance signals, I removed ... worked but the balance of luminance and chrominance wasn't ... inside the TEA2000. In the new circuit the luminance output is ...
    rga24 rga24 December 2013 Hardware
  • Graphics: What is the point of ...... actually, let me apologize for such a stupid vague thread title, I so wanted to avoid this but the whole sentence I wanted to write is just way t…

    ... with poor filtering in the TEA2000 circuit. There's a tuned ... error between the chrominance and luminance signals. I've still never ...
    guesser guesser February 2014 Sinclair Miscellaneous
  • Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…

    ... combining of black and white (luminance) information and colour (chrominance) information ... of reducing luminance and chrominance interference on the 128K TEA2000 circuit. Similar ...
    rga24 rga24 April 2014 Hardware
  • Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…

    ... combining of black and white (luminance) information and colour (chrominance) information ... of reducing luminance and chrominance interference on the 128K TEA2000 circuit. Similar ...
    Arjun Arjun May 2014 Hardware
  • New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…

    ... connection and toasted my second TEA2000 so that was the point ... composite video output by the TEA2000 encoder IC which doesn't ... only (and you get the luminance from the luma out obviously ...
    guesser guesser July 2014 Hardware
  • New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…

    ... of reducing luminance and chrominance interference on the 128K TEA2000 circuit. Similar ... , like we did with the TEA2000. Wich are the ways to ...
    Renegade Renegade August 2014 Hardware
  • New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…

    ... because the output of the luminance amplifier is already mixed ... br />
    On the TEA2000, the luminance is output from LUMO and ... which amplifies and inverts the luminance signal. Mixed in with ... signal, notch filter the luminance and add in the chrominance ...
    rga24 rga24 August 2014 Hardware
  • Some downloads fail meI want download the schema of the Spectrum +2A and I can not because appears a user and password request in all links of "SCHEMATICS, MANUALS AND TEC…

    I understand, the sound is mixed with the luminance signal and into of TEA2000 with the croma
    DAVID BRUNNER DAVID BRUNNER November 2015 Hardware
  • Some downloads fail meI want download the schema of the Spectrum +2A and I can not because appears a user and password request in all links of "SCHEMATICS, MANUALS AND TEC…

    Correct, the TEA2000 generates a luminance signal on pin 7 which is fed back into its luminance input pin 8. The FM audio subcarrier is mixed onto that luminance signal and the TEA2000 mixes the chrominance subcarrier to the result. :)
    guesser guesser November 2015 Hardware
  • So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…

    ... 've already added a luminance filter to the TEA2000, 10uH + 100pF which ... luma/chroma timing, which the TEA2000 does not, and the Spectrum ... only use 12V for the TEA2000 and the RS232 port. The ...
    Peter Mulholland Peter Mulholland May 2016 Hardware
  • So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…

    For the luminance filter at the TEA2000 a combination with a higher ... a working TEA2000 in the +2 but add a luminance filter and ... remove the sound carrier from luminance.

    Greetings Ingo ...
    ingo ingo May 2016 Hardware
  • Spectrum +2 grey RF removalHi everyone. If I were to remove RF output from a +2, just intending to keep Composite video out from TEA2000, then all the components that make t…

    ... the longer legs to provide Luminance output directly without passing through ... yellow wire link for routing Luminance.

    [URL=http://s1063 ... place from C31 right pad (TEA2000 pin 8) to R5 lower ... to D5 (which comes from TEA2000 pin 6 and goes to ...
    Renegade Renegade March 2017 Hardware
  • What mods do you recommend for a +2aHello all, I have recently got a +2a, that is running nicely. I'm thinking of modding it. I have read that the +3e rom is a good option. what else…

    The TEA2000 generates the composite signal (CVBS) ... a TV directly from the TEA2000 but they are rather delicate ... 's best not).
    The luminance filter mod is completely separate ...
    guesser guesser September 2017 Hardware
  • Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…

    ... filtering circuit to the luminance signal of the TEA2000 chip. The color ...
    Ast_A_Moore Ast_A_Moore January 2018 Hardware
  • Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…

    ... resonance filter to the luminance signal on the TEA2000, as I’m ...
    Ast_A_Moore Ast_A_Moore January 2018 Hardware
  • Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…

    ... resonance filter to the luminance signal on the TEA2000, as I’m ...
    Claudius Claudius January 2018 Hardware
  • Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…

    ... resonance filter to the luminance signal on the TEA2000, as I’m ...
    Ast_A_Moore Ast_A_Moore January 2018 Hardware
  • ZEsarUX 6.1 BETAHi I have uploaded a new ZEsarUX BETA version 6.1. You can download it from the usual beta url: https://sourceforge.net/projects/zesarux/files/…

    ... 128/+2/+3

    TEA2000 colours - these are the 15 ... that result from sending a TEA2000 composite video encoder the bit ... Spectrum 48K ULA, the luminance staircase on the Y output ... change the magnitude of the luminance signal by controlling a transistor ...
    rga24 rga24 January 2018 Emulators
<1234567…18>

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Related Threads

  • Tea2000Hi<br /> <br /> Does anybody know of a stockist for the TEA2000 Chip or is their a replacement.
  • Tea2000Greetings! Prompt analog PAl/NTS Encoder - TEA2000? Has broken it is necessary to substitute, and I have not found the given type in free sale.
  • ZXPROJECT update: a replacement for TEA2000Just go to [url]http://www.zxprojects.com[/url]
  • TEA2000 mod for better CVBS quality?Has anyone tried this before? :confused:<br /> <br /> <br /> [URL=http://s1063.photobucket.com/user/JRT480/media/Evenmoreperfect_zpse2505ab9.jpg.html…
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