northwest QED update
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australian electronic gold prospecting forum.com  |  Pi metal detector by Bugwhiskers  |  QED Detector ,latest updates  |  Topic: QED update 0 Members and 3 Guests are viewing this topic. « previous next »
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Author Topic: QED update  (Read 59732 times)
Huego
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« Reply #320 on: Wednesday January 18 2017 12:00:47 AEDT PM »

QED - GB a Triumph on hot ground

For those who missed it....

Quote

I've not been able to GB a Mono on this site regardless of the timings used on the 5000, ….  the depth sacrifice makes it a complete waste of time. .... Now the QED balances a Mono here without an issue, ...and it appears to detect target’s at a depth that we’ve missed ..   (YF, Finders QED p 34)

Some hot ground caused "a GPX to complain a bit, but the QED handled it easily. (Reg, Finders,)


Now I would call that a TRIUMPH for the QED over the 5000 (& models preceeding it) on GB on hot ground, wouldn't you?

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« Reply #321 on: Wednesday January 18 2017 12:31:26 AEDT PM »

..... common enemies make enemies become friends!...
we shouldn't have been forced to take up arms with words - we were compelled to defend ourselves make a stand here for what the QED symbolises*  (in tribute to PL, post Eureka).

Below shows a poor attempt at humour / distraction elsewhere from the QED facts

Musings (below) by a Finders fool, while sitting on an outdoor dunnie in the heat, is neither close to any truth nor helpfiul to prospectors. Readers & testers are onto the attributes of the QED already, no publicity required, just facts from tests without musings! Talk about a crumpet basher!

1. What if after Reg’s tests the QED turns out to be "nothing more than a useful beeper aimed at the budget/entry level (newbie prospector, who have) got all the time in the world (for a ) manual GB newbie. ….. "

Duhhh.... Smart prospectors & newbies learn from the GB info the QED gives with manual GB. Further, it balances where a 5000 won’t!  (Refer to what YF has found above.)

2. Bugs …. "needs someone to buy him out."

“Someone" may well buy him out, or “someone" may manufacture &/or sell the QED under licence, or licence to use his IP or … or … the possibilities are endless!  (I was told by Bugs that the QED DOES contain patented & licensed IP.)

But don’t worry, it works easily for the old & new prospector alike, without a Gold Tax.

3. "No doubt the first thing to be addressed will be the archaic manual ground balance and add some professional marketing…. exclusive of agenda driven supporters of the last ten years."

Hmmmmm "archaic GB" eh? ….. so funny when the old timers & sensible prospectors can use it when a 5000 won't GB on such hot ground! Combined with rugged electronics at affordable prices they now know better.  

Expensive professional BS (called marketing) is not required to add to costs when word-of-mouth & reports do the job. No sharelholders to please, just prospectors.

* This forum’s primary "agenda" was always to support & defend new & affordable MDs like the QED

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kazza
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« Reply #322 on: Friday January 20 2017 09:09:49 AEDT AM »

BugWiskers,

Looks like your brainchild is a great success! Congrats!

May I ask a technical question please, for which it goes without saying, that NO answer is expect answer if it gives away any of your IP?

As you know, I think I understand the ML Smooth patent (and of course, take it for granted you are not infringing it). But wow, the QED is reported to have even lower ground noise than Smooth AND excellent depth! Finding gold deeper than extant detectors in well-worked areas is all about target signal to ground noise ratio, something which you have clearly cracked. (Obviously this is not the case in bulldozed ground, nor areas that have had none or few detectors pass over it.) Even more amazing, the QED produces low ground noise where other detectors produce impractically severe ground signals. How the heck have you achieved this truly landmark breakthrough, especially given that other BIG $ companies are battling to do the same? Seriously awesome! I am amazed others have not noted the immense significance of this!

Thanks.
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« Reply #323 on: Friday January 20 2017 10:37:33 AEDT AM »

  

As you know, I think I understand the ML Smooth patent

What is the ML smooth patent number?
doug smile
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« Reply #324 on: Friday January 20 2017 12:24:22 AEDT PM »

  
BugWiskers,

Looks like your brainchild is a great success! Congrats!

May I ask a technical question please, for which it goes without saying, that NO answer is expect answer if it gives away any of your IP?

As you know, I think I understand the ML Smooth patent (and of course, take it for granted you are not infringing it). But wow, the QED is reported to have even lower ground noise than Smooth AND excellent depth! Finding gold deeper than extant detectors in well-worked areas is all about target signal to ground noise ratio, something which you have clearly cracked. (Obviously this is not the case in bulldozed ground, nor areas that have had none or few detectors pass over it.) Even more amazing, the QED produces low ground noise where other detectors produce impractically severe ground signals. How the heck have you achieved this truly landmark breakthrough, especially given that other BIG $ companies are battling to do the same? Seriously awesome! I am amazed others have not noted the immense significance of this!

Thanks.


The QED GB method was posted in this forum back in April 2016. It uses a combination of the work/lapsed patents of Eric Foster, Chapman & Howells, and Dr George Paltoglou.

I believe the improvement over prior art is due to the Bipolar Integrating ADC and the use of 4 extra stages of LPF using class D techniques that don't suffer phase lag to drive both VCA and VCO. This disclosure creates my copyright.
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« Reply #325 on: Friday January 20 2017 12:35:38 AEDT PM »

  
  
BugWiskers,

Looks like your brainchild is a great success! Congrats!

May I ask a technical question please, for which it goes without saying, that NO answer is expect answer if it gives away any of your IP?

As you know, I think I understand the ML Smooth patent (and of course, take it for granted you are not infringing it). But wow, the QED is reported to have even lower ground noise than Smooth AND excellent depth! Finding gold deeper than extant detectors in well-worked areas is all about target signal to ground noise ratio, something which you have clearly cracked. (Obviously this is not the case in bulldozed ground, nor areas that have had none or few detectors pass over it.) Even more amazing, the QED produces low ground noise where other detectors produce impractically severe ground signals. How the heck have you achieved this truly landmark breakthrough, especially given that other BIG $ companies are battling to do the same? Seriously awesome! I am amazed others have not noted the immense significance of this!

Thanks.


The QED GB method was posted in this forum back in April 2016. It uses a combination of the work/lapsed patents of Eric Foster, Chapman & Howells, and Dr George Paltoglou.

I believe the improvement over prior art is due to the Bipolar Integrating ADC and the use of 4 extra stages of LPF using class D techniques that don't suffer phase lag to drive both VCA and VCO. This disclosure creates my copyright.

The QED circuit being much simpler(relatively few components) also likely contributes to a  lower noise  ie better S/N than other comparable detectors. The patent applied for front end  may also play a part.
doug smile
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« Reply #326 on: Friday January 20 2017 12:55:39 AEDT PM »

Why would anyone now want to buy an sdc2300 when they can have a QED at about 1/2 the price and use a range of mono coils from say 8"-24" rather than being stuck with an 8" tiddler coil on the SDC?
just my thoughts,
doug smile
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« Reply #327 on: Friday January 20 2017 13:21:18 AEDT PM »

Some forums appear to live in their own little world. Their is nothing about the QED on prospectingaustralia.com even on the  board discussing other detector brands!
  
link-https://www.prospectingaustralia.com.au/forum/viewforum.php?id=38
doug smile
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« Reply #328 on: Friday January 20 2017 13:29:02 AEDT PM »

  
  
BugWiskers,

Looks like your brainchild is a great success! Congrats!

May I ask a technical question please, for which it goes without saying, that NO answer is expect answer if it gives away any of your IP?

As you know, I think I understand the ML Smooth patent (and of course, take it for granted you are not infringing it). But wow, the QED is reported to have even lower ground noise than Smooth AND excellent depth! Finding gold deeper than extant detectors in well-worked areas is all about target signal to ground noise ratio, something which you have clearly cracked. (Obviously this is not the case in bulldozed ground, nor areas that have had none or few detectors pass over it.) Even more amazing, the QED produces low ground noise where other detectors produce impractically severe ground signals. How the heck have you achieved this truly landmark breakthrough, especially given that other BIG $ companies are battling to do the same? Seriously awesome! I am amazed others have not noted the immense significance of this!

Thanks.


The QED GB method was posted in this forum back in April 2016. It uses a combination of the work/lapsed patents of Eric Foster, Chapman & Howells, and Dr George Paltoglou.

I believe the improvement over prior art is due to the Bipolar Integrating ADC and the use of 4 extra stages of LPF using class D techniques that don't suffer phase lag to drive both VCA and VCO. This disclosure creates my copyright.

Application Note AN-1071
Class D Audio Amplifier Basics

By Jun Honda & Jonathan Adams
Table of Contents
Page
What is a Class D Audio Amplifier? – Theory of Operation ..................2
Topology Comparison – Linear vs. Class D .........................................4
Analogy to a Synchronous Buck Converter..........................................5
Power Losses in the MOSFETs ...........................................................6
Half Bridge vs. Full Bridge....................................................................7
Major Cause of Imperfection ................................................................8
THD and Dead Time ............................................................................9
Audio Performance Measurement........................................................10
Shoot Through and Dead Time............................................................11
Power Supply Pumping........................................................................12
EMI Consideration: Qrr in Body Diode .................................................13
Conclusion ...........................................................................................14
A Class D audio amplifier is basically a switching amplifier or PWM amplifier. There are a number
of different classes of amplifiers. This application note takes a look at the definitions for the main
classifications.
  
doug smile
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« Reply #329 on: Friday January 20 2017 13:38:52 AEDT PM »

  
Some forums appear to live in their own little world. Their is nothing about the QED on prospectingaustralia.com even on the  board discussing other detector brands!
  
link-https://www.prospectingaustralia.com.au/forum/viewforum.php?id=38
doug smile

Have a look here :   
It is under the heading Metal Detectors
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« Reply #330 on: Friday January 20 2017 13:45:36 AEDT PM »

  
  
Some forums appear to live in their own little world. Their is nothing about the QED on prospectingaustralia.com even on the  board discussing other detector brands!
  
link-https://www.prospectingaustralia.com.au/forum/viewforum.php?id=38
doug smile

Have a look here:   

Thanks! Perhaps i am the one living in a forum bubble!  embarrased 
doug smile
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« Reply #331 on: Friday January 20 2017 17:09:43 AEDT PM »

  
Why would anyone now want to buy an sdc2300 when they can have a QED at about 1/2 the price and use a range of mono coils from say 8"-24" rather than being stuck with an 8" tiddler coil on the SDC?
just my thoughts,
doug smile

Based on some recent testing the QED can also detect some  tiny specimen gold (and some very minute bits) that the SDC 2300 can't!
doug smile
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« Reply #332 on: Friday January 20 2017 17:19:03 AEDT PM »

All PI detectors that use an integrator as a null summation/averaging means as published by Eric Foster in 1968 will have a detection "hole" for any target that has the same decay characteristics as the ground. In the QED in MODE 1  a 70 * 70mm single sided copper PCB falls into that hole. There are other factors that come into play ie conductivity, profile area, thickness, orientation etc. I know someone who has a 2g Nugget that is just detectable at 2" with a well known brand.I haven't found a nugget yet that falls into the QED "hole" but I may have swung the coil over it over it !
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« Reply #333 on: Saturday January 21 2017 07:01:20 AEDT AM »

Thanks very much for your reply BugWiskers.

I certainly do well-remember your post about the QED method (Rx demodulation following the short Tx pulse – Rx demodulation following  the long Tx pulse, with the long Tx pulse’s Rx window position acting as GB). This will not produce low ground noise of course, but because the proof is in the pudding; the QED does have extremely low ground noise, therefore you have developed some other super-cunning idea, that you have now kindly disclosed. I hope you have this break-through thoroughly patented?

I now expose my woeful ignorance; I am clueless why this important advance to the art, the LPF higher order & zero phase lag, should so improve to target-to-ground-noise ratio as is being witnessed by testers. Could you kindly please explain, and again of course, NO answer expected if this is confidential IP.

Thanks so much again! Looking forward to someday soon using a QED!
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« Reply #334 on: Saturday January 21 2017 09:34:42 AEDT AM »

  
I certainly do well-remember your post about the QED method (Rx demodulation following the short Tx pulse – Rx demodulation following  the long Tx pulse, with the long Tx pulse’s Rx window position acting as GB). This will not produce low ground noise of course
Why will the GB method as disclosed not produce low ground noise? Have you found the smooth patent number for me yet?
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« Reply #335 on: Saturday January 21 2017 10:08:10 AEDT AM »

Question  on the QED batteries from another forum
Does the  QED performance drop/lag as batteries decline in capacity?
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« Reply #336 on: Saturday January 21 2017 11:59:22 AEDT AM »

  
Question  on the QED batteries from another forum
Does the  QED performance drop/lag as batteries decline in capacity?
doug smile

The answer is no because the TX voltage is constant regardless of the battery voltage.
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« Reply #337 on: Saturday January 21 2017 12:04:01 AEDT PM »

  
All PI detectors that use an integrator as a null summation/averaging means as published by Eric Foster in 1968 will have a detection "hole" for any target that has the same decay characteristics as the ground. In the QED in MODE 1  a 70 * 70mm single sided copper PCB falls into that hole. There are other factors that come into play ie conductivity, profile area, thickness, orientation etc. I know someone who has a 2g Nugget that is just detectable at 2" with a well known brand.I haven't found a nugget yet that falls into the QED "hole" but I may have swung the coil over it over it !

There is one other constituent and it too is a part of the PI science taught by Eric Foster.
Perhaps when you find the "Smooth GB" patent number as request by Doug you would care to explain the differences between it and AU2010101019
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« Reply #338 on: Saturday January 21 2017 13:36:28 AEDT PM »

 The QED complies with ACMA regulations.It has C tick approval.
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« Reply #339 on: Sunday January 22 2017 10:06:50 AEDT AM »

Doug, the reasons why the QED demodulation scheme will give ground noise are given in my (long) attempt at explaining Smooth, as I understand it from the patent, but my understanding easily could be flawed! That description was my best shot and I put a lot of effort into it. Sorry, unable to contribute any further insight.

Moving forward…  why bother giving Smooth any further consideration? BugWiskers has successfully by-passed it with a superior method as witnessed by QED field reports; providing even less ground noise; working areas that Smooth cannot work at all; making Smooth irrelevantly obsolete!

Wish I knew the reasoning behind the QED A/D secret. Best of luck exploiting it!



(P.S. Please, I do not wish to get involved in politics. We all know that the ‘515 Smooth patent has been mentioned many times and that it was a ML/BW “issue.” Encourage you to look to the future, not the past. Suggest this will achieve far more. Thanks.)
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