[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 ... 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ... 89   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 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 #210 on: February 25, 2010, 11:56:52 am »
Go Up Go Down

hello

Dear Ram did you have any modification on original circuit?
I constructed the DP of eugene52 but not work.
My coil is 30cm Diameter of 0.5mm wire in 35 turns
(2.6 Ohm ? 1.044 mH)

I could not find the 200K Pot and used 220K pot.
Power supply in 12V show different current rate from 60mA to 120mA.
The SP has sound and frequency of it change by tuning of volumes and it never muted by pressing TUN key and tuning of pot.

Does This circuit has any test point or some things like that for test the circuit?
can any one past the sounds of fine tuned DP?

Thank you,


Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75745.html#msg75745



There are 1 attachment(s) in this post which you can not view or download

Please register for viewing them.

DSC01395.jpg


« Last Edit: February 25, 2010, 12:04:30 pm by mafarid »
Logged
Offline tagaquezon
Pull Tab
*

Join Date: Nov, 2008
Thank you0

Activity
0%
Posts: 5
Referrals: 0

25.00 Gold
View Inventory

Awards
« Reply #211 on: February 25, 2010, 08:14:19 pm »
Go Up Go Down

in my case of continued sound of speaker, it is caused by bad solder of parts. It took me 3 boards before i finally make a working DP. Club

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75830.html#msg75830




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 #212 on: February 25, 2010, 10:23:30 pm »
Go Up Go Down

Hi

It is impossible because I re soldered all pins of circuit and checked the placement of all circuit?s parts. No no!
My friend I am not a beginner. Wink

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75850.html#msg75850




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 #213 on: February 26, 2010, 12:45:02 am »
Go Up Go Down

Meybe you bern  Devil sam parts wyth the solder

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75862.html#msg75862




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 #214 on: February 26, 2010, 01:18:47 am »
Go Up Go Down

Hello

 Grin My friend I am not a beginner!!!
I built the ?Stuart I? PI easily and successfully in metal detectors.
Does This circuit has any test point or some things like that for test the circuit?
can any one past the sounds of fine tuned DP?


Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75867.html#msg75867




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 #215 on: February 26, 2010, 01:55:31 am »
Go Up Go Down

I want to build DP as soon as possible in single board layout,

but did you adjusted the frequency?

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75871.html#msg75871




Logged
Offline electrosoft
Copper Member
*

Join Date: Mar, 2009
Thank you35

Activity
0%
Male
Tunisia
Posts: 42
Referrals: 0

220.00 Gold
View Inventory

Awards
« Reply #216 on: February 26, 2010, 08:18:25 am »
Go Up Go Down

Quote:Posted by mafarid
Hello

 Grin My friend I am not a beginner!!!
I built the ?Stuart I? PI easily and successfully in metal detectors.
Does This circuit has any test point or some things like that for test the circuit?
can any one past the sounds of fine tuned DP?



have you used cd4066 or hct4066 ?
1-check resistor near ne555 & speaker
2-remove battery checker sircuit
3-now im making 2 side board more stable  Mad

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75934.html#msg75934




« Last Edit: February 26, 2010, 08:20:49 am by electrosoft »
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 #217 on: February 26, 2010, 09:30:26 am »
Go Up Go Down

Hi

I used CD4066, CD14538, LF357, NE555, NE556 and TL062CN.

?Check resistor near ne555 & speaker?
 Which resistor 39 OHM or 2 OHM? but I used 500 OHM volume for 100 OHM volume.

The battery monitor work nice because when voltage level drop less than 9.56 red LED turn ON.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg75952.html#msg75952




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 #218 on: February 27, 2010, 01:34:49 am »
Go Up Go Down

Ι have a question, can i use LT1357 insted of LF357 ??  is it beter Huh? Huh?  Huh?

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg76179.html#msg76179




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 #219 on: February 27, 2010, 03:04:45 am »
Go Up Go Down

LF357 and LT1357 look similar

I finally found a bug in my assembled circuit. Idea
Two 100n capacitors on beside of TL062 had wrong position. Crazy
Now continued sound problem solved and another problem occurred. Cry
When I turned on DP, I have sound and by pressing TUN key or waiting for 3-5 second this sound die.
I tried to have sound by tunings Pot or volumes but nothing occurred ?
When I putted a big metal box, I have same problem but when I shake coil on metal box I had very low sound.

I have most analyze and metering instruments. If somebody have any test point like below schematic, it will be so useful.


Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg76190.html#msg76190



There are 2 attachment(s) in this post which you can not view or download

Please register for viewing them.

12.jpg
DSC01393.jpg


Logged
Print
Pages:  1 ... 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ... 89   Go Up
Jump to:  

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