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Offline NIKOS
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rabdoskopy
« Reply #220 on: February 27, 2010, 05:51:27 am »
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 if the box is from aluminium has no elektromagnetik intefeard
Thancks for LF357  Fight LT1357  Smiley Smiley

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stuart I
« Reply #221 on: February 28, 2010, 12:45:35 am »
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Do not waste your money you can use Plastic box without any problem.
If you want to shield DP from electromagnetic noise, try an aluminum foil inside of plastic box that connected to GND.
Are you completed the DP and it work nice?
I think the problem is in my coil
Can you test a coil with this specification ?30cm Diameter of 0.5mm wire in 35 turns??
(2.6 Ohm ? 1.044 mH)


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Offline hesamavr
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« Reply #222 on: February 28, 2010, 12:59:31 am »
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Did you construct the DP from schematic (you design a PCB yourself) or you used the PCB in the forum ?

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stuart I
« Reply #223 on: February 28, 2010, 03:00:21 am »
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Hi

I constructed the DP of eugene52. This circuit is same as circuit designed by Elbombaci in Turkish forum.

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Delta Snifferxr71 single side pcb- ready to build FINAL 11-22-09.zip

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Offline NIKOS
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« Reply #224 on: March 01, 2010, 01:32:00 am »
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the coil has to make wyth 20-22 right terns end 15-16 left terns ,the resistans is beter wen is 3.5-4.5ohm wyth 0.35-0.40 diametr of wire
I have not finise the progect i stil colect info ent probably i wil make my on dizain direkt from the schematik.Thancs  Smiley

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stuart I
« Reply #225 on: March 01, 2010, 04:16:58 am »
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My friends this circuit will go to mad me!  Crazy  Crazy No no!  Thumbs Down
After more try, I found that one of 4066 was ill. I changed it but now I have a new and strange problem.
When I turn it on, I have normal continued sound it dies by pressing TUN key. By tuning of volumes, I have a normal TIK, TIK sound but the coil never detects any metal. In untuned format of circuit by closing of metal parts to coil the continued sound, go mute.




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« Reply #226 on: March 01, 2010, 05:13:37 am »
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after a converceision i have with a expert of electronik progects suggest parralil with a
capacitor 10.000 uf to put a variable capacitor ingrice ent regulate capacistans on the coil
with more terns ingrice the electromagnetik power of it ent coexist with the ole progekt Shocked Shocked

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« Reply #227 on: March 01, 2010, 06:36:24 am »
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I came across this Sniffer semi-kit in ebay.co.uk and thought it could be be a fun project:

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As my knowledge of electronics is limited to putting batteries in or plugging a device into an outlet, I intend to enlist the services of a friendly TV repairman to help me out. Your opinions on this Sniffer semi-kit, please. Is it worthwhile to build?



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"Gold rides an iron horse." (Old prospector Homefire)
Offline NIKOS
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« Reply #228 on: March 01, 2010, 09:06:54 am »
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i like the part [no return] 

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« Reply #229 on: March 01, 2010, 10:10:20 am »
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NO NO ?159.00 is wasting money for ?15 circuit !!!!


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