who invented the circlotron

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

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I recieved the following email from a gentleman in Finland. He read in my literature that Mr Wiggins invented the circlotron. I have included the email below. I have no idea of its credibility but I thought you might be interested. I tried to find the inventor he mentioned on the internet but all the articles I found were not in a language I understand.
Hello!
I happened to hit your pages when searching for "circlotron". You say
there that the inventor is Mr. Wiggins. Wrong, there is something more
behind!
We had here in Finland a world top level amplifier designer , Mr. Tapio
KÃ¶ykkÃ¤. He died 1994 being nearly eighty years old. He held several
tube patents, unluckily in lack of money with only Finnish coverage. He
has two (no more valid) patents considering circlotron or as he called
it, single ended push- pull. The patents are from the very beginning of
the fifties. He made a mistake and released the shematic in a German
radio magazine ( Funktechnik 7/1953). Within a couple of years the idea
was commercialized by Electro Voice in USA in 1955 and Philips in
Germany also in 1955. Unluckily Mr KÃ¶ykkÃ¤ had no money for a wider
patent, Sad! The Finnish patent , however caused, that these E-V and
Philips amps were never sold in Finland.
I happen to own several amplifiers made by Mr. KÃ¶ykkÃ¤. They are
gathering scarcities here in Finland. One of them, VOIMA (this was the
product name) R100 gives 150 W out to any load(mono). It includes four
EL34s with 650V anode voltage weighting some 20 kilos with its two
separate power transformers and a reasonable cathode output transformer
as a rectangular symmetrical ring construction.The work of Mr KÃ¶ykkÃ¤ is
not dead, a smallesh firm (KinoÃ¤Ã¤ni Oy) bought all rights to his
products and e. g. repairs all VOIMA products still.
I have built several amplifiers with this concept, using TV line tubes
with good results.
It would be fair to correct your data up to this for the honour of a
real Finnish hifi man, Mr. KÃ¶ykkÃ¤.
Regards, Mauri PÃ¤nnÃ¤ri
Finland.
I found this interesting.
Bill

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Topic - who invented the circlotron - Bill Sibner 21:12:09 03/27/01 (3)

Re: who invented the circlotron - Lew 07:24:51 03/28/01 (2)

Re: who invented the circlotron - Ralph 12:34:40 03/29/01 (1)

Re: who invented the circlotron - Travis 15:51:33 03/29/01 (0)

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