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'Transformers'

Discussion in 'Electrics UK' started by JohnW2, 1 Jul 2021.

  1. JohnW2

    JohnW2

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    'Different words' are usually needed in order to avoid ambiguity, hence to achieve clear communication. The extreme of the alternative would be to call every electrical item just 'a component', and that would clearly be ridiculous.

    All that matters to me is clear and unambiguous communication, and I don't care a jot about which words are used to achieve that. My 'problem' is that, as far as I am concerned, current usage of the word "transformer" is NOT at all unambiguous (unless qualified).

    Kind Regards, John
     
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  3. JohnW2

    JohnW2

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    I still have some, which were used in my R107 etc. for 'portable' use (if one was capable of carrying something weighting dozens of kg!). Two or three years ago I tried one of them, and it still worked fine (albeit neither the audible of electrical noise was very welcome!).

    Kind Regards, John
     
  4. bernardgreen

    bernardgreen

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    I believe rotary convertors were a motor rotating the shaft of a dynamo. That is I am sure what was use to power the military 19 sets.

    They were quite powerful devices, I was able to use a Wolf electric drill on the DC 200 Volt (?) HT supply from the rotary convertor.
     
  5. davelx

    davelx

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    Yes, correct. WS No 19 used the vibrator converter for the receiver, and when you pressed the transmit button ("Pressel"), the rotary converter would wind up to power the transmitter. I spent many an hour chatting over the CCF Radio Network using a WS No. 19.
     
  6. bernardgreen

    bernardgreen

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    Thanks Google the 19 set rotary convertor

    [​IMG]


    and the 19 Set itself

    [​IMG]
     
  7. JohnW2

    JohnW2

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    Indeed - much the same here. Maybe we even chatted 'back then' :) As I said, the R107 (receiver), both the CCF's and my own, used a vibrator converter, just like the one illustrated here (not that I ever used the one in my own R107, except to 'play'!) - lots of noise, lots of sparks and electrical noise, but 'it worked' :)

    Kind Regards, John
     
  8. ericmark

    ericmark

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    Seem to remember Pye Cambridge we did not have many, most were Pye Westminster. And some Pye Cambridge have rotary converter and some synchronous vibrator, [​IMG] this was well before I got my licence.
     
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  9. davelx

    davelx

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    my CCF callsign was 27B and personal 27C.
     
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  11. JohnW2

    JohnW2

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    You have a better memory than I do, my only defence being that we're talking (at least in my case) of nearly 60 years ago! My amateur licence dates from 1963 (obtained on the first day it was possible - aka my 14th birthday).

    Kind Regards, John
     
  12. ericmark

    ericmark

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    It was around 1985 before my first licence and that was a VP8, then latter got a GW7 and finally a VR2, my son got a licence at 14 year old, now over 40 and has not renewed in. I have but seldom use it.
     
  13. JohnW2

    JohnW2

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    For what it's worth (and it may be little more than a dream) but when I thought hard in attempts to resurrect those ~60-year old memories of our CCF callsign, "85" keeps coming into my head!

    Kind Regards, John
     
  14. SUNRAY

    SUNRAY

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    the vibrator/transformer combination was a very different thing to a rotary converter
     
  15. JohnW2

    JohnW2

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    Indeed. As has been said, the 19 set used a vibrator converter for the receiver and a rotary converter (as depicted by the photo in post #20) for the transmitter.

    Kind Regards, John
     
  16. SUNRAY

    SUNRAY

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    AH... but...

    I had 2 different power packs for my 19 sets, the one you describe with the vibrator and the dual voltage dynamotor/rotary convertor but the other one had 2 dynamotors, one which ran continuously and the second which started for TX PA HT. Apart from the continuous whine it was a better system for RX/TX changeover as there was no HT dropout.
     
  17. SUNRAY

    SUNRAY

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    I read Erics post
    to mean: the title we applied to a vibrator/transformer combination was a rotary converter. Even now I can't read it any other way or add any word(s) to make it read differently.
     
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