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Welcome to the Australianelectronicgoldprospectingforum founded in July 2010, an add free totally independent forum with over 70 boards and paid for and managed by the Admin.Total forum Topics:8,582 Total forum Posts:40,072  Members: 612 Total page views:7,258,084 Admin and  forum and domain name owner :marjen at optusnet.com.au. Guests can only see a limited number of boards at present and cannot see any links. Guest cannot post and never will be permitted too!Registration of new members must be approved by admin.Anyone known to have any past or present association with Codan/ML or acting on their behalf as a proxy or intermediary  will not have their registration approved. All  original Photos and posts and  original materials displayed on this site are COPYRIGHTED and remain the property of the poster and the australianelectronicgoldprospectingforum.com. All messages on this forum express the personal views of the author and should not be interpreted as necessarily being in accord with those of the forum owner and neither the owner of this forum and its domain name nor SMF or the forum software developers or the forum host shall be held responsible for the content of any message. Admin reserves the right to remove any offensive or objectionable posts. No defamatory material or politics/religion or issues of race will be permitted.
QED coming soon!
Goldsearch Australia has been appointed the Australian Distributor for the QED.Check their website after  Wed 7th Dec 2016.
Global temperature goes from heat record to heat record, yet the sun is at its dimmest for half a century.
What is empirical  evidence?
Empirical evidence is information acquired by observation or experimentation. This data is recorded and analyzed by scientists and is a central process as part of the scientific method. Why is everything posted on climate by Inhere always horseshit?
Poor old  Inhere on finders still does not know the difference between weather and climate!The silly old goat seems to think because some places have recently had very cold weather that this brings into question  AGW!  Only right wing rabble rubbish climate deniers like horseshit Inhere don't  seem to understand  that AGW will mean that some regions of the earth will become colder!
Why is  onehalfgram :1/2 wit always wrong  on the QED?

australian electronic gold prospecting forum.com  |  Recent Posts
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 41 
 on: Saturday January 21 2017 11:59:22 AEDT AM 
Started by bugwhiskers - Last post by bugwhiskers
  
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.

 42 
 on: Saturday January 21 2017 10:08:10 AEDT AM 
Started by bugwhiskers - Last post by Doug
Question  on the QED batteries from another forum
Does the  QED performance drop/lag as batteries decline in capacity?
doug smile

 43 
 on: Saturday January 21 2017 09:34:42 AEDT AM 
Started by bugwhiskers - Last post by Doug
  
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?
doug smile

 44 
 on: Saturday January 21 2017 07:01:20 AEDT AM 
Started by bugwhiskers - Last post by kazza
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!

 45 
 on: Friday January 20 2017 17:19:03 AEDT PM 
Started by bugwhiskers - Last post by bugwhiskers
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 !

 46 
 on: Friday January 20 2017 17:09:43 AEDT PM 
Started by bugwhiskers - Last post by Doug
  
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

 47 
 on: Friday January 20 2017 13:45:36 AEDT PM 
Started by bugwhiskers - Last post by Doug
  
  
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

 48 
 on: Friday January 20 2017 13:38:52 AEDT PM 
Started by bugwhiskers - Last post by mylab
  
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

 49 
 on: Friday January 20 2017 13:29:02 AEDT PM 
Started by bugwhiskers - Last post by Doug
  
  
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

 50 
 on: Friday January 20 2017 13:21:18 AEDT PM 
Started by bugwhiskers - Last post by Doug
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

Pages: 1 2 3 4 [5] 6 7 8 9 10
australian electronic gold prospecting forum.com  |  Recent Posts


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