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  #26  
Old 10-23-2011, 04:48 PM
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Originally Posted by WM6 View Post
You need to spray circuit with this

http://www.teslanol.com/deutsch/article/isolier.html

first, let it dry and then seal with epoxy.
Another tip for high gain circuits is it is important to clean the circuit board and solder joints after the soldering is completed. A thin film of solder flux left on the conductors can make a path for electrical leakage in the high gain sections even when you cannot see the flux. It is common practice to clean the circuit boards with methylated spirits and let it dry before sealing it with coatings and potting. The cleaning of the circuit can also help when tuning the circuit so small signals are not lost with electronic noise from leakage across the conductors near the transistors.

Best wishes,
J_P
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  #27  
Old 10-23-2011, 07:46 PM
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It is common practice to clean the circuit boards with methylated spirits (...).
Best wishes,
J_P
You should be careful when choosing your words, now gurus are going to be needed to to clean the boards from spirits traces...
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  #28  
Old 10-23-2011, 09:58 PM
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Quote:
Originally Posted by WM6 View Post
You need to spray circuit with this

http://www.teslanol.com/deutsch/article/isolier.html

first, let it dry and then seal with epoxy.
that is good ideia,is some kind of verniz spray,it will isolate the circuit and then pot with epoxy ,thanks
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  #29  
Old 10-23-2011, 10:01 PM
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You should be careful when choosing your words, now gurus are going to be needed to to clean the boards from spirits traces...
,yes,it will be a problem if Jinns stay around the LRL circuits.
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  #30  
Old 10-23-2011, 10:10 PM
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,yes,it will be a problem if Jinns stay around the LRL circuits.
This is not a problem for you. I see guru printed under your name.

Best wishes,
J_P
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  #31  
Old 10-23-2011, 10:47 PM
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Originally Posted by Morgan View Post
that is good ideia,is some kind of verniz spray,it will isolate the circuit and then pot with epoxy ,thanks
It have to be dedicated to insulation in electronic. Not all spray lacquer are suitable for this purposes.

Here in English:

http://www.teslanol.com/english/article/26027.html
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  #32  
Old 11-06-2011, 11:38 AM
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Well it looks like no one will build me aSuper Pistol LRL on this forum.

Morgan was going to but has changed his mind, but I respect his decision.

I therefore have decided to build one myself with the help of a qualified electronics engineer.

If anyone hear would be happy to help me in this project then please PM me.

I would be grateful for your response on what you think would be the best and most up to date schematic pistol to build.

Of all the schematic LRL`s projects on this forum I’m confused “do any of them work or not” the only one that comes to mind is Morgan’s video finding his own sample target, but is there any other proof videos of actually finding a good target.

I have some good areas hear in the UK to search for old buried precious metallic treasures, so would be happy to publish all my field test results hear.
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  #33  
Old 11-06-2011, 11:49 PM
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Originally Posted by MIJ View Post
Well it looks like no one will build me aSuper Pistol LRL on this forum.

Morgan was going to but has changed his mind, but I respect his decision.

I therefore have decided to build one myself with the help of a qualified electronics engineer.

If anyone hear would be happy to help me in this project then please PM me.

I would be grateful for your response on what you think would be the best and most up to date schematic pistol to build.

Of all the schematic LRL`s projects on this forum I’m confused “do any of them work or not” the only one that comes to mind is Morgan’s video finding his own sample target, but is there any other proof videos of actually finding a good target.

I have some good areas hear in the UK to search for old buried precious metallic treasures, so would be happy to publish all my field test results hear.
I want to join with you in a treasure search with PDK in this places,i hope to visit your country very soon.

regards
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  #34  
Old 11-07-2011, 03:17 PM
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Morgan,

I look forward to searching with you on your visit, and very interested to see how your PDK performs hear.

One thing here is Humidity is quit high at the moment it’s about 78-90%, in summer it doesn’t get much lower than 65-70%

I believe this can cause problems with PDK detection range?
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  #35  
Old 11-07-2011, 10:02 PM
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Originally Posted by MIJ View Post
Morgan,

I look forward to searching with you on your visit, and very interested to see how your PDK performs hear.

One thing here is Humidity is quit high at the moment it’s about 78-90%, in summer it doesn’t get much lower than 65-70%

I believe this can cause problems with PDK detection range?
No,it works fine even with high humidity.
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