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Transistor that has TWO emitters

Discussion in 'General Electronics Discussion' started by Simmon, Mar 1, 2014.

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  1. Simmon

    Simmon

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    Jan 30, 2014
    This transistor has Two Emitters, look at the schematic

    What is it called and what kind of circuits is it used for and why does it have 2 emitters?
     

    Attached Files:

  2. jpanhalt

    jpanhalt

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    Nov 12, 2013
  3. Simmon

    Simmon

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    Jan 30, 2014
    It seems they are used for RF modulation or modulation circuits for somereason but why 2 emitters?
     
  4. shumifan50

    shumifan50

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    Jan 16, 2014
    You are annoying. I also did not know BUT I read the links provided by jpanhalt and it is really simple to follow. So stop trolling and being lazy.
     
  5. Simmon

    Simmon

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    Jan 30, 2014
    A multiple-emitter transistor is a specialized bipolar transistor mostly used at the inputs of TTL NAND logic gates. Input signals are applied to the emitters. Collector current stops flowing only if all emitters are driven by the logical high voltage, thus performing an AND logical operation using a single transistor. Multiple-emitter transistors replace diodes of DTL and allow reduction of switching time and power dissipation.
     
  6. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    I have only ever seen these in IC schematics. I had no idea they ever made discrete versions.
     
  7. Simmon

    Simmon

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    Jan 30, 2014
    But why the 2 emitters? what does having 2 emitters do? why not 2 bases? or 2 collectors?
     
  8. shumifan50

    shumifan50

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    Jan 16, 2014
    Still trolling - read the links provided.
     
  9. jpanhalt

    jpanhalt

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    Nov 12, 2013
    @Simmon

    I thought your comment in post #5 explained one reason.

    A reason for multi-emitters in RF transistors was explained in the edaboard link.

    John
     
  10. Simmon

    Simmon

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    Jan 30, 2014
    i still don't understand why it has 2 emitters, can you please explain it better why it has 2 emitters, what does it do when having 2 emitters?

    Does it output more current?
     
  11. shumifan50

    shumifan50

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    Jan 16, 2014
    Maybe you should give up on electronics as it requires some ability to think, which you seem to sadly lack.
    Stop trolling
     
  12. davenn

    davenn Moderator

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    Sep 5, 2009
    did you not read the links provided ?
    was there something specific in any of those links you didn't understand ?

    Dave
     
  13. shumifan50

    shumifan50

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    Jan 16, 2014
    @Davenn:
    He either doesn't read provided links, cannot understand English or lacks the ability, as is clear from all his other threads.
    Or he is just a troll out to annoy contributors, which is the most likely case. Each response is followed by another question until he is ignored.
     
  14. jpanhalt

    jpanhalt

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    Nov 12, 2013
    Hi Simmon,

    Before addressing your current question, let me say that I have known you as Billy Mayo (ETO),Danny Davis (EDA Board), DexterMccoy (AAC), and Simmon (EP). You have been banned from at least two of those accounts for trolling. You are fooling no one.

    Moving forward, let's establish a basis of openness and honesty for future dialog. There are a lot of people here who would like to help you. But, since that help is offered as good will, I think you need to be honest in return.

    Now, for your present question. Is it related to your attempted repair of autopilots for airplanes? I have no problem helping you with that, if that is the case, since the design is antiquated. However, that fact might make a difference to some others who would normally want to help you, as was discussed on ETO.

    Second, what is your real question? Why is the answer important to you? What difference will the answer make in what you do tomorrow, next week, or next month at work?

    Finally, you stated quite clearly how two emitters can be used to create an AND gate in your previous post (#5). I asked before what you do not understand of your own words, and you ignored my question. So, I ask it again. Let's have dialog rather than a one-way street.

    John
     
  15. davenn

    davenn Moderator

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    Sep 5, 2009
    Ohhh noooo NOT Danny Davis
    that's a nick I'm aware of
    he was banned here quite some time ago but using a very different IP



    Dave
     
    Last edited: Mar 4, 2014
  16. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    Yes I noted he seemed to be using some sort of anonymising service.
     
  17. jpanhalt

    jpanhalt

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    Nov 12, 2013
    Maybe he is really testing the newest Chinese cloaking device to tease the NSA?

    John
     
  18. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
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    Jan 21, 2010
    No, I suspect he's using wifi wherever he can.

    I have tracked down the IP addresses used by Danny Davis and Simmon and I have convinced myself they are likely the same person. The posting styles are likewise similar.
     
  19. jpanhalt

    jpanhalt

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    Nov 12, 2013
    As are the schematics similar. Now, something called "pitch" and "pitch deviation" could refer to a pipe organ or maybe some other things, but none of those things have ailerons. The schematics offered over the past 3 or 4 months are telltale.

    John
     
  20. shumifan50

    shumifan50

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    Jan 16, 2014
    I suggest that he be banned. The likes of him are extremely annoying. Then stick a banned cookie for this domain on his machine and disallow re-registration if this cookie is present. This is not foolproof, but might help.

    I like to read all the posts as I learn a lot from them, even about things I don't need, but trolling wastes a lot of time.
     
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