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I have put there a trimmer pot and adjusted it's value until the square wave was perfect, using oscilloscope.
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A good idea! Only the trimmer must then be replaced with a permanent one.Comment
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Ol? pessoal tudo bem? Espero que sim!!
Vamos l? estou construindo meu tgsl, por?m gostaria de saber se algu?m pode me passar um layout de como fazer as liga??es corretas dos potenci?metros e da chave para descrimina??o, sendo que meu modelo ? anterior dessa modifica??o do Edu n?o ? dele. Desde j? agrade?o a todos.Comment
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Please read the forum rules -> Basic Rules of the ForumsOriginally posted by leoaf View Post
and make your posts in English.
You also do not need to spam the forum with multiple copies of exactly the same question in different threads. I have removed all your duplicate posts.Comment
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guys how are you? Hope so !!
Let's go? i'm building my tgsl, why? I wonder if anyone? m can you give me a layout of how to make the league ?? correct pots? meters and the key to discriminate ?? o, being my model? previous of this modification ?? Edu n? The? his. Since j? please? o everyone. Sorry previous post was not in English. I'm from Brazil, I didn't follow the rules, but now I've read everything. Thank you all.Comment
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You should read this in the Projects section -> TGSL - Complete DetailsOriginally posted by leoaf View PostComment
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thinking he wants just to meet good friends and much to speak according to his hotsun southern temperament mentality. no more.Originally posted by Qiaozhi View PostComment
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I'm building the TGSL following the documentation of this thread ( https://www.geotech1.com/forums/show...mplete-Details ) but I see in the schematic file there are two schematics (the main one) and a smaller one (that seems to be the power supply). Is this power supply schematic also in the PCB layout or must it be built separately? I'm a bit confused because I can't find some components, like the R48, R50, R51 and C3 and C28 (for example) in the placement files ( PCB layout )
Thanks!Comment
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The power supply is in 1 pcb main ,and the other that youhave seen is not power sypply but 2 tone board .Originally posted by cristiano.sar View PostComment
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Oh, thank you so much. So, this second smaller schematic is not essential? Thanks.Comment
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Hello, I want to get the correct files for collecting this deviceComment
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I have just one more question, there are about 4 capacitors that does not have any value. Do you know what values they must be? I attached an image withe these caps surrounded by a green rectangle.
https://cristianoimgs.s3.amazonaws.c..._annotated.jpg
Thanks and sorry for disturbing.Comment
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The two caps , above and below the LM358 are 0.022uF. These are on the feed-back of the first differential stage.
The two below "RFc" are for RX coil tuning. Only one is needed and TGSL schematic calls for 0.015uF. The second is to allow paralleling to get the required value for proper phase with coils nulled.
The one above the LF353 is 10pF on the TGSL.Comment
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Hello
I am a new, beginner and novice member
The attachment I received was not of good quality and was not clear !! Is it possible to send me a complete file of device construction (PCB details and circuit and antenna schematics)?
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