[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
1
News:
Pages:  1 ... 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 ... 90   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 1 Guest are viewing this topic.
Offline raff33
Copper Member
*

Join Date: Jan, 2009
Thank you1

Activity
0%

Morocco
Posts: 67
Referrals: 0

390.00 Gold
View Inventory

Awards
« Reply #250 on: March 08, 2010, 10:24:36 am »
Go Up Go Down

hi, thanks nikos for helping Wink
my DP work stable but poor detecting ,a canet koka 15 cm..........verry poor Embarrassed..........
with : R5=2.2k 1w ; R6=680R ; R23,24,25,26=4k7 5% ; D4=TL071 i didn't find LF357 ; C30=10.000uf.
coil=40cm diameter ,23tr ,0.50mm wire
i d'ont now how mesre resistance coil by my multimetre
iam new in electronic can any one gide me ..? sorry for my bad english and many thanks

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198719.html#msg198719




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 #251 on: March 08, 2010, 12:30:49 pm »
Go Up Go Down

Hi
Dear NIKOS,

I removed all parts of DP one by one rechecked and re soldered them but all showed true value.
Good luck,

Dear raff33,

Good job,
True coil of DP has 29 turns instead of 23 turns. For measuring of Ohm, set your multi meter on suitable Ohm metering mod then put one of your probes on one side of object and put other probe on other side.
Be careful about removing power supply before measuring of Ohm.
For example at your coil, remove coil from DP, set your multi meter on 1x Ohm mod then use probes.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198720.html#msg198720




Logged
Offline masons21
Pull Tab
*

Join Date: Aug, 2009
Thank you0

Activity
0%

Latvia
Posts: 11
Referrals: 0

55.00 Gold
View Inventory

Awards

md5008
« Reply #252 on: March 20, 2010, 12:23:31 pm »
Go Up Go Down

i want make a 25cm coil with 0.5mm cu wire how much turns i need and i need shield coil or not

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198721.html#msg198721




Logged
Offline Eugene52Topic starter
M.D. Electronic Builders Club
Moderator
Gold Member
*****

Mood:Happy
Happy

M.D. Electronic Builders Club
Join Date: Dec, 2008
Thank you246

Activity
2%
Male
United States
Posts: 2548
Referrals: 0

17427.00 Gold
View Inventory

Awards

Teknetics and Fisher only !!!
« Reply #253 on: March 20, 2010, 10:30:17 pm »
Go Up Go Down

Hello masons21 . The 0.5 mm coil information you need was already posted here several months ago . So I am looking for it again , right now . Anyway , the Delta Pulse is a Great Project built by many hobbyists all over the world . You made an excellent PI Project choice .

Best Regards..........Eugene
Try 30 to 36 turns on a 28 cm [11 inch] form with 0.5 mm wire and you should obtain 3.5 dc ohms coil resistance which would be perfect for the Delta Pulse . Remember that the original Delta Pulse factory search coil measured closed to 1000 uh inductance !!!!

Regards..........Eugene

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198722.html#msg198722




Logged

Let's Talk Treasure right here on Thunting.com

Offline raff33
Copper Member
*

Join Date: Jan, 2009
Thank you1

Activity
0%

Morocco
Posts: 67
Referrals: 0

390.00 Gold
View Inventory

Awards
« Reply #254 on: March 21, 2010, 09:35:31 am »
Go Up Go Down

Hi Eugene,
my DP single side work stable but poor detecting ,a canet koka 15 cm..........verry poor .......... Cry
with : R5=2.2k 1w ; R6=680R ; R23,24,25,26=4k7 5% ; D4=TL071 i didn't find LF357 ; C30=10.000uf.
coil=40cm diameter ,23tr ,0.50mm wire ; 2.6 R
what's the probleme probably........?  many thanks
Regards..........raff33

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198723.html#msg198723




« Last Edit: December 31, 1969, 06:00:00 pm by raff33 »
Logged
Offline Eugene52Topic starter
M.D. Electronic Builders Club
Moderator
Gold Member
*****

Mood:Happy
Happy

M.D. Electronic Builders Club
Join Date: Dec, 2008
Thank you246

Activity
2%
Male
United States
Posts: 2548
Referrals: 0

17427.00 Gold
View Inventory

Awards

Teknetics and Fisher only !!!
« Reply #255 on: March 21, 2010, 10:33:21 am »
Go Up Go Down

Quote:Posted by raff33
Hi Eugene,
my DP single side work stable but poor detecting ,a canet koka 15 cm..........verry poor .......... Cry
with : R5=2.2k 1w ; R6=680R ; R23,24,25,26=4k7 5% ; D4=TL071 i didn't find LF357 ; C30=10.000uf.
coil=40cm diameter ,23tr ,0.50mm wire ; 2.6 R
what's the probleme probably........?  many thanks
Regards..........raff33


Hello . The problem is you are using the old original Mikron Delta Schematic [blue-red color] , It has many errors . R5 2.2 k ohms is wrong , R5 is 680 ohm 1 watt . And R6 is 1 k ohm . Use the schematic I posted here today !!! R23,24,25,26 must be 1% tolerance . If you can not buy 1% then measure each with ohmeter and only use 4.7k before you solder in place . C30 and C31 Electrolytic filter capacitors should be 4,700 uf 16 volt minimum . Seach coil is ok but coil with 3 to 4 ohms dc resistance would be better . Please use latest schematic I have here !!
Regards...........Eugene

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198724.html#msg198724



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

Please register for viewing them.

DeltaPulse.jpg


Logged

Let's Talk Treasure right here on Thunting.com

Offline raff33
Copper Member
*

Join Date: Jan, 2009
Thank you1

Activity
0%

Morocco
Posts: 67
Referrals: 0

390.00 Gold
View Inventory

Awards
« Reply #256 on: March 21, 2010, 11:25:34 am »
Go Up Go Down

Hi Mr Eugene52,
thank you for informations , i will doing this modification  Great

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198725.html#msg198725




Logged
Offline ameen
Pull Tab
*

Join Date: Dec, 2009
Thank you0

Activity
0%

Syrian Arab Republic
Posts: 7
Referrals: 0

35.00 Gold
View Inventory

Awards
« Reply #257 on: March 22, 2010, 06:41:33 am »
Go Up Go Down

Hello

We have built one, but it does not work. I hear a voice when running and then press reboot and the sound disappears and the device is not sensitive to the metals.
Is the resistance side of 740 should be 1 watt.
ne 556 heat
And also a warm 740
Can you help me
Forgive me for my bad English

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198726.html#msg198726




Logged
Offline BR*simonn
Pull Tab
*

Join Date: Mar, 2009
Thank you0

Activity
0%

Brazil
Posts: 9
Referrals: 0

45.00 Gold
View Inventory

Awards
« Reply #258 on: March 22, 2010, 05:39:37 pm »
Go Up Go Down

Hello my friend. Sorry about my bad english, ok? I see the Delta Pulse Metal Detector on Youtube. It's very interesting. Do you know somebody that has the PCB with the components to sell? Thank you. Claudio

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198727.html#msg198727




Logged
Offline gocman
Foil
*

Join Date: Feb, 2010
Thank you0

Activity
0%

Macedonia, The Former Yugoslav Republic of
Posts: 3
Referrals: 0

20.00 Gold
View Inventory

Awards

delta pulse
« Reply #259 on: March 24, 2010, 02:59:29 am »
Go Up Go Down

u must to find lf357 i thing. I try with all i have op's but LF357 is the best for me Cry

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198728.html#msg198728




Logged
Print
Pages:  1 ... 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 ... 90   Go Up
Jump to:  

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