[x] Welcome at THunting.com!

A fun place to talk about Metal Detecting, Treasure Hunting & Prospecting. Here you can share finds and experience with thousands of members from all over the world

Join us and Register Now - Its FREE & EASY

THunting.com
Treasure Hunting & Metal Detecting Community
   
Advanced Search
*
Welcome, Guest! Please login or register HERE - It is FREE and easy.
Only registered users can post and view images on our message boards.
Did you miss your activation email?

Login with email, password and session length
Or Login Using Social Network Account
News:
Pages:  1 ... 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 ... 91   Go Down
Print
Share this topic on FacebookShare this topic on Del.icio.usShare this topic on DiggShare this topic on RedditShare this topic on Twitter
Tags:
0 Members and 2 Guests are viewing this topic.
Offline steaua581
Copper Member
*

Join Date: Feb, 2010
Thank you1

Activity
0%

Romania
Posts: 57
Referrals: 0

335.00 Gold
View Inventory

Awards

radio shack
« Reply #240 on: March 03, 2010, 06:24:57 am »
Go Up Go Down
Guys i have a question regarding the pcb layout posted originally by Eugene....and i have atached the to files wich i cant match.Can someone give me the right schematic and .lay file please.
Meaby i have mixed them up a little....
can someone give me the right succesfull no bugs project...part list if possible...and so on send it to my  email please ...
Greatfully appreciated
Marius
atlanta24marius@yahoo.com


"Well i tryied to upload the RAR file but it does not upload"

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198709.html#msg198709

« Last Edit: December 31, 1969, 06:00:00 pm by steaua581 » 		Logged
Offline Tuxnor
Bronze Member
*

Join Date: Dec, 2009
Thank you9

Activity
0%
Male
Sweden
Posts: 121
Referrals: 0

227.00 Gold
View Inventory

Awards

Xp Deus V3.2 ,Garrett at gold , Whites GMT,Whites surf pi silverdog UK clone,Trevor Hill gold pic 3,Deltapulse,Garys pulse-2
« Reply #241 on: March 03, 2010, 06:38:33 am »
Go Up Go Down
Quote:Posted by steaua581
Guys i have a question regarding the pcb layout posted originally by Eugene....and i have atached the to files wich i cant match.Can someone give me the right schematic and .lay file please.
Meaby i have mixed them up a little....
can someone give me the right succesfull no bugs project...part list if possible...and so on send it to my  email please ...
Greatfully appreciated
Marius
atlanta24marius@yahoo.com


"Well i tryied to upload the RAR file but it does not upload"
8 more posts..and you can download it at download secion here

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198710.html#msg198710

Logged
Offline steaua581
Copper Member
*

Join Date: Feb, 2010
Thank you1

Activity
0%

Romania
Posts: 57
Referrals: 0

335.00 Gold
View Inventory

Awards

radio shack
« Reply #242 on: March 03, 2010, 06:45:49 am »
Go Up Go Down
well i have allready downloaded some files you mean they wherre not the right ones?

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198711.html#msg198711

Logged
Offline NIKOS
Copper Member
*

Join Date: Jan, 2010
Thank you0

Activity
0%

Greece
Posts: 35
Referrals: 0

130.00 Gold
View Inventory

Awards

rabdoskopy
« Reply #243 on: March 03, 2010, 12:26:25 pm »
Go Up Go Down
Quote:Posted by mafarid
Yes, LF357 was warm a little! But why?  Shocked Shocked Shocked
I think warming of LF357 is not normal. Huh?
 I do not have another LF357 to replace, so is it passable for anyone who has ready DP test this problem?

i find samthing hu maby help you
diametr of coil wire  voltaz   resistansOm          100cm long
0.40                       314mA     0.1422om
0.42                       346mA     0.129  om
0.45                       400mA     0.11236 om
0.48                       450mA     0.0986 om
0.50                       490mA     0.091  om
0.55                       594mA     0.0752 om

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198712.html#msg198712

Logged
Offline belief
Pull Tab
*

Join Date: Jun, 2009
Thank you1

Activity
0%

Iran, Islamic Republic of
Posts: 21
Referrals: 0

105.00 Gold
View Inventory

Awards

miner-4
« Reply #244 on: March 05, 2010, 02:28:40 am »
Go Up Go Down
Hello ram

Wich one is better frequency for find gold , 100 HZ  , 120 Hz , 250 Hz , 300 Hz  ?

Thanks ....

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198713.html#msg198713

« Last Edit: December 31, 1969, 06:00:00 pm by belief » 		Logged
Offline hesamavr
Copper Member
*

Join Date: Aug, 2009
Thank you10

Activity
0%

Iran, Islamic Republic of
Posts: 56
Referrals: 0

310.00 Gold
View Inventory

Awards
« Reply #245 on: March 06, 2010, 01:26:47 pm »
Go Up Go Down
My circuit is also didn't work in single layer board at all. after this, I'll not spend money on such circuits. I think, I've spent more money than one available and constructed metal detector in market.  Angry

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198714.html#msg198714

« Last Edit: December 31, 1969, 06:00:00 pm by hesamavr » 		Logged
Offline NIKOS
Copper Member
*

Join Date: Jan, 2010
Thank you0

Activity
0%

Greece
Posts: 35
Referrals: 0

130.00 Gold
View Inventory

Awards

rabdoskopy
« Reply #246 on: March 08, 2010, 03:03:30 am »
Go Up Go Down
is the pcb same with the schematic ?
is ole resistors +_1%  ?
is ole capacitors poliester film?
is ole solder rite ?
is the coil resistans 3.5-4.5 Om
is evrything in rite place?
have you test the stadium [5volt stabiliser-orcillator-amplifier-]?


Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198715.html#msg198715

Logged
Offline hesamavr
Copper Member
*

Join Date: Aug, 2009
Thank you10

Activity
0%

Iran, Islamic Republic of
Posts: 56
Referrals: 0

310.00 Gold
View Inventory

Awards
« Reply #247 on: March 08, 2010, 05:47:24 am »
Go Up Go Down
The resistance of coil is about 2.5 to 2.6 Ohm, and everything is in its right place.

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198716.html#msg198716

Logged
Offline mafarid
Pull Tab
*

Join Date: Dec, 2009
Thank you1

Activity
0%
Male
Iran, Islamic Republic of
Posts: 16
Referrals: 0

90.00 Gold
View Inventory

Awards

stuart I
« Reply #248 on: March 08, 2010, 08:09:14 am »
Go Up Go Down
Hi
Dear NIKOS:
Is the PCB same with the schematic?
Not completely, but parts that deleted from PCB is not so important because more and more people was build this circuit and some of them succeed.
Is ole resistors +_1%?
No, except of four resistors that pointed on schematic for other resistors 1% tolerance is not needful.
Is ole capacitors poliester film?
Yes
Is ole solder rite?
Yes
Is the coil resistance 3.5-4.5 Om?
No, It is passable that problem is in here!
Thank you. I refer to American wire gauge page (

You are not allowed to view links.
Please Register or Login

http://en.wikipedia.org/wiki/American_wire_gauge
) and find that standard resistance of coil should be 3.5 ohm.
Is everything in rite place?
Yes
Have you test the stadium [5volt stabiliser-orcillator-amplifier-]?
Yes, if you purpose is right voltage on supply pin my answer is yes but if your purpose is true signal on output pin of OP amp my answer is no
 At end I have a question from you, Are you complete this DP and it worked?


Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198717.html#msg198717

Logged
Offline NIKOS
Copper Member
*

Join Date: Jan, 2010
Thank you0

Activity
0%

Greece
Posts: 35
Referrals: 0

130.00 Gold
View Inventory

Awards

rabdoskopy
« Reply #249 on: March 08, 2010, 09:32:00 am »
Go Up Go Down
NO i am not even started  Rider sory for too many qestions   Violent
i working my GOLD-SCAN 
Quote:Posted by NIKOS
i find samthing hu maby help you
diametr of coil wire  voltaz   resistansOm          100cm long
0.40                       314mA     0.1422om
0.42                       346mA     0.129  om
0.45                       400mA     0.11236 om
0.48                       450mA     0.0986 om
0.50                       490mA     0.091  om
0.55                       594mA     0.0752 om
for the lf357 the coil have end sam capasistans end if this capasistans is low
parts like the lf357 get warm ,,thanks

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,28024.msg198718.html#msg198718

Logged
Print
Pages:  1 ... 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 ... 91   Go Up
Jump to:  

Powered by SMF 1.1.19 | SMF © 2005, Simple Machines | Sitemap
Copyright THunting.com