northwest EVO 15x17 review
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australian electronic gold prospecting forum.com  |  Detector Technology and Electronics and new detectors  |  Detector Coils  |  Topic: EVO 15x17 review 0 Members and 1 Guest are viewing this topic. « previous next »
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bugwhiskers
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« Reply #40 on: Sunday February 14 2016 05:46:57 AEDT AM »

Thanks Gary, always very enlightening.
It would appear that 20" on a 5 cent piece and 29" on the AL block are the benchmarks.
10" on a 1.6g nugget shows the claim of 17" on a 0.8g to be, shall we say, "a mistake".
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6666
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« Reply #41 on: Saturday May 28 2016 14:48:38 AEST PM »

Hi Moodz
from post #14 did you ever buy one and pull it apart ?
be interested to see if the winding is similar to this.






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moodz
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« Reply #42 on: Sunday May 29 2016 18:39:23 AEST PM »

  
Hi Moodz
from post #14 did you ever buy one and pull it apart ?
be interested to see if the winding is similar to this.








... no need to take apart ... your configuration is correct ...   
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6666
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« Reply #43 on: Sunday May 29 2016 21:35:54 AEST PM »

Thanks for the reply, interesting to know, also your local courthouse usually has machine if you know somebody there  smile
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GARY
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« Reply #44 on: Monday May 30 2016 10:40:44 AEST AM »

Interesting and could call it a Double Flat wound mono although knowing very little about winding coils I assume top and bottom layers are required to produce the intended inductance figures & etc.

Gary..
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WM6
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« Reply #45 on: Tuesday May 31 2016 03:55:45 AEST AM »

  
Interesting and could call it a Double Flat wound mono although knowing very little about winding coils I assume top and bottom layers are required to produce the intended inductance figures & etc.

Gary..

Assume that both layers are anti-phase wound and unshielded to help to maintain ground to coil (parasitic) capacitance (which appear with unshielded coil).

It could be easier and more symmetric wound using (double) speaker cable and connect one cable wire end to another cable wire start.
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« Reply #46 on: Tuesday May 31 2016 09:11:56 AEST AM »

Quote
It could be easier and more symmetric wound using (double) speaker cable and connect one cable wire end to another cable wire start.

Good idea.
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6666
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« Reply #47 on: Sunday June 12 2016 16:38:12 AEST PM »

Moodz do you have any info of the configuration of the sadie coil please ?
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moodz
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« Reply #48 on: Sunday June 12 2016 20:27:10 AEST PM »

  
Moodz do you have any info of the configuration of the sadie coil please ?

I have used one ... however I cannot say how it was constructed .... they are very sensitive for small targs.
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« Reply #49 on: Sunday June 12 2016 20:47:50 AEST PM »

  
  
Moodz do you have any info of the configuration of the sadie coil please ?

I have used one ... however I cannot say how it was constructed .... they are very sensitive for small targs.

Thanks , yes they work very well.
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Doug
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« Reply #50 on: Sunday June 12 2016 22:35:49 AEST PM »

 Whats so funny is the some dude on 1/2 wits MAD  "forum" thinks that 666 is me!
doug smile
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australian electronic gold prospecting forum.com  |  Detector Technology and Electronics and new detectors  |  Detector Coils  |  Topic: EVO 15x17 review « previous next »
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