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Old 27th October 2009, 08:08 AM   #11
mos57 is offline mos57  Italy
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Quote:
Originally Posted by Ejam View Post
Mos57

Well the first web address is in Italian and after 2 hours of guessing at various searchs, I could not find it and the second address merely gives the patent number and the inventor. If it is not too much trouble, could you provide a direct link to the patent.

Ejam
Hi Ejam, since the original text was in italian language, i cannnot help much (also summary of invention).

However because i have spent more time and money to patent, i cannot publish here integrally (there are intellectual proprierty, you understand).

Also if the circuit is patent, is easy for someone to try to plagiarize and i not would spend money for legal stuff. At this regards, in this forum there are people more expert than me: is my pleasure to receive advice about.

But if there anybody to have businnes interest , then i can send the document "as confidentially", after agreement subscription.

Now here i can do a brief description of circuit:
  1. employment of same polarity devices
  2. employment of a signal transformer
  3. voltage and gurrent gain
  4. unbalanced or balanced input signal
  5. push-pull operation
  6. single-ended operation

Francesco.
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Old 27th October 2009, 12:55 PM   #12
Ejam is offline Ejam  Australia
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Default Francesco's Wild Goose Chase

Francesco

Forget it. You obviously want to make things difficult. I thought the public had a right to access patents and that patents protect your intellectual property. The glaring question remains "is the so called invention just an input transformer converting a single ended signal to a balanced signal followed by a mosfet circlotron circuit with the output taken from the drains". If it is, then it's hardly an original invention.

Ejam
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Old 27th October 2009, 01:29 PM   #13
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I think it can be accomplished with either a single transformer with two independent secondaries, or two matched transformers. Using an output transformer is another possibility. My intention was mostly to illustrate the error in my thinking, but it also highlights just how simple and elegant the JFET input solution really is.

Ejam: I have something on the workbench just for you. (not single stage tho)

Circlotrons are fun to obsess over, like prime numbers.

Cheers,

Mike
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Old 27th October 2009, 01:54 PM   #14
mos57 is offline mos57  Italy
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Ejam,
the circuit in question are at least a transformer followed by a gain stage circlotron, but remain the question that nobody have realized/patented a circolotron stage with voltage gain before.
When one guy try to patent something, he must show that anybody have patented or only published similar object prior him.
As an example, from my present patent i was forced to remove any extension circuits, because similar applications was published on a japanese web site (remember: only published but not patented).

Not so bad at last: i can show its here without problem for my patent

These circuits are very similar with "the amazing circlotron" by Mike.

Francesco.
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File Type: pdf INTEGRAZIONE AL BREVETTO.pdf (17.9 KB, 248 views)

Last edited by mos57; 27th October 2009 at 01:56 PM.
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Old 27th October 2009, 02:35 PM   #15
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Thanks, Francesco.
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Old 27th October 2009, 11:39 PM   #16
Ejam is offline Ejam  Australia
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Default See That Wasn't Too Hard

Francesco

If you look back at John Broskie's Tubecad musings he came up with an "inverted circlotron" circuit back in June 1999 where the output was taken from the drains giving both voltage and current gain. Anyway, thanks for the pdf, will get busy with my Italian.

Mike

Sounds good, when can we get a look at the details?

Ejam
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Old 28th October 2009, 12:42 AM   #17
kevinkr is offline kevinkr  United States
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One of the very interesting claims in this patent relates to the fact that the output is ground referenced and from a dc standpoint there is no (dc) voltage present at the load. This is a big difference from the floating tube circlotrons I've worked on (and designed) in the past. (My last design had ground referenced outputs, but it was not the case that the outputs were exactly at ground potential - they could float some volts above or below but were common mode in theory at least.)

The topology also seems to allow for very convenient differential drive ground referenced from a balanced source or even a center tapped IT transformer.

Wonder how well it works. Built a working prototype? Pretty cool idea.
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Old 28th October 2009, 01:56 AM   #18
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Sounds good, when can we get a look at the details?
I'd better say 2-3 weeks, just to be on the safe side.
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Old 28th October 2009, 02:32 AM   #19
Ejam is offline Ejam  Australia
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Default Circlotron Mediation

Mixed Nelson's De-Lite with Mark's Amazing Circlotron, gave it a good shake then added a twist of lime.

Ejam
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File Type: jpg circlotron no 2.jpg (131.2 KB, 482 views)
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Old 28th October 2009, 04:11 AM   #20
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You will need a very quiet power supply, like the Blowtorch
or one of the later Levinson power amplifiers.
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