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Transistor equivalent

Discussion in 'General Electronics Chat' started by Nikolai Petrenko, Oct 24, 2015.

  1. gophert

    gophert Active Member

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    In my old neighborhood, I was used to a thread being about one topic and new threads are generally created so different experts get involved and comment, newbies bother to can through 10 to 30 posts and add to the discussion. With 800 posts, it becomes kind of an exclusive conversation because it just takes too much effort to get up to speed. I was just surprised at how long this thread lingered on. Now I understand. I have no pull here and didn't mean to disrupt local convention.
     
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  2. spec

    spec Well-Known Member Most Helpful Member

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    I envisaged an amplifier being evolved that Nikolai would have been happy to build and would have enjoyed listening to, without having spend a fortune.

    I am glad that a new thread has now been formed so that we can build on what has been learned on this thread to define a final system for Nikolai. I also hope that the sniping and unwarranted contradictions on this thread by certain parties do not continue on the new thread.
     
    Last edited: Jan 2, 2017
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  3. Nikolai Petrenko

    Nikolai Petrenko Member

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    Agree, any contradictions should be stopped, anyone have his opinions make he different from the others.
     
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  4. dave

    Dave New Member

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  5. Little Ghostman

    Little Ghostman Well-Known Member Most Helpful Member

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    I havnt read all this yet!! but its so good and full of info shouldnt it be moved into radio and coms? At least it would be in view longer. Or with permission of the main people how about some pruning out the odd post with chit chat and shrinking it a bit and making it a sticky in the radio section?
    I am going back to finish reading it!! Great thread packed with info/
     
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  6. atferrari

    atferrari Well-Known Member

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    Nikolai

    Nothing better than thinking of yourself first of all. That makes you fill alive! At least you were / are consistent with your answer to my early PM. Do you remember?

    Anyway, there is another way to consider threads and posts: a repository of knowledge as exhibited here by spec with one aspect, the length of this, what makes literally impossible to browse for anyone interested in the future.

    In so many years riding different forums, I found just one (VERY) long thread worth the effort (in Microchip forum) but the subject there was not a design.

    I even heard here that the concept of "owner of the thread" crept in this site too. That, united to attitudes like yours makes this not a forum but who knows, kind of chat mixed with question/answer service?

    I admire spec's good disposition. If such a thing is possible I feel a healthy envy of his knowledge and experience. :)

    Enjoy your thread.
     
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  7. Tony Stewart

    Tony Stewart Well-Known Member Most Helpful Member

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    ag was this detrimental to your hearing loss? or necessary level to hear from other causes?

    My father lost much of his hearing late in life after months of target practice during the war in the RCMP training without ear protection at that time being unknown to be essential.

    It looks like a good jackhammer for testing car window integrity too.

    Happy new year
     
  8. audioguru

    audioguru Well-Known Member Most Helpful Member

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    When I was 69 years old I was not aware of my high frequency hearing loss and I did not know that it is a normal part of aging. I thought that radio and TV "engineers" hid the microphones under clothing then they did not pickup the high frequencies in the announcer's speech and I also thought that today people mumble when they talk. I got a hearing test that shocked me (then two more as second and third opinions) two years ago, had demos with two brands and bought what I have now.

    My hearing aids have AGC on most settings but AGC is turned off on the Music setting and I am amazed that they do not overload even when music is playing very loudly. Also my hearing aids produce no hiss or rumble noise and no distortion.
     
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  9. gophert

    gophert Active Member

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    Audioguru,

    I remember reading some of your comments as you tested various hearing aids. Which hearing aid brand/model did you settle on?

    Do you wear them all the time or just when you are in crowds/listening to music/...

    How long do batteries last (with some brief commentary on usage conditions).

    Thanks in advance - I'll likely be shopping soon.
     
  10. audioguru

    audioguru Well-Known Member Most Helpful Member

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    I didn't like the sound (or the setup) of Widex brand hearing aids at the first hearing clinic where I got a free hearing test and demo. But at the second clinic the results of the hearing test was the same and I liked the setup and performance of the Phonak Audeo B-312 hearing aids. Then while wearing the Phonak demo aids I bumped into a clinic promo at a Costco store so I went for a third hearing test (same results as the others) and discovered their very low price for Phonak.

    I looked at the Phonak website and the hearing aids at Costco were not shown. A phone call to Phonak revealed they are an old model still made for Costco but missing some modern features.
    I wear them all the time, but not in the shower or when it is raining and I am walking. Sometimes I fall asleep wearing them at night listening to my souped-up clock radio. Batteries last for 8 days and give a half-hour warning "low baddery". Newer ones use a rechargeable "baddery". I use the Music Mode (very clear and wideband but with anti-feedback turned off) most of the time but use the Automatic Mode (with noise reduction) in stores and malls.

    The hearing aids came with a wireless Bluetooth transmitter that transmits my sound system or TV sound to them but I don't use it because my hearing aids setup corrects only high frequencies then it has no bass sounds. Maybe I will ask for a Bass Mode programmed so I can use the Bluetooth module.
     
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  11. gophert

    gophert Active Member

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    You are the best! Thank you.
     
  12. cowboybob

    cowboybob Well-Known Member Most Helpful Member

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    Sadly, posts on this subject are becoming more pertinent :arghh:...
     
  13. spec

    spec Well-Known Member Most Helpful Member

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    ...pardon!
     
  14. cowboybob

    cowboybob Well-Known Member Most Helpful Member

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    My hearing is going south. (tinnitus, and, oddly enough, higher frequencies being subdued).

    Off topic comment (often a prob with threads of this length if joined late in the game...). My apologies.
     
  15. spec

    spec Well-Known Member Most Helpful Member

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    Yes it is quite funny how this thread attracts a lot of different topics.

    Hearing is a subject that would recieve wide interest and, in my opinion, it would be better as a thread in its own right (which I have mentioned to ETO admin).

    spec
     
    Last edited: Jan 8, 2017
  16. atferrari

    atferrari Well-Known Member

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    Part of an Audio subforum maybe?

    BTW, tested one Widex yesterday and another brand next Tuesday to improve my declining hearing.
     
  17. spec

    spec Well-Known Member Most Helpful Member

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    Sounds good to me atferrari (excuse pun).:)

    spec
     
  18. gophert

    gophert Active Member

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    I would keep the sub-thread to Audio equipment (receivers, play-back equipment, recording, microphones, ...). Amp design and chips should stay in general or projects areas. Just my 2-cents.
     

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