[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
2
News:
Pages:  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... 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 1 Guest are viewing this topic.
Offline Eugene52Topic starter
M.D. Electronic Builders Club
Moderator
Gold Member
*****

Mood:Happy
Happy

M.D. Electronic Builders Club
Join Date: Dec, 2008
Thank you399

Activity
0%
Male
United States
Posts: 2630
Referrals: 0

17957.00 Gold
View Inventory

Awards

Teknetics , Fisher , Discovery3300 and TIANXUN 19 kHz VLF Metal Detector
« Reply #40 on: August 13, 2009, 11:02:32 pm »
Go Up Go Down

Quote:Posted by masons21
i have problems with lf357 in latvia can i replace it with somting pls help


Hello masons21 . LM357 is a JFET input op amp . The substitute is a TL081

Regards......Eugene

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg43567.html#msg43567



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

Please register for viewing them.

TL081.pdf


« Last Edit: August 13, 2009, 11:48:56 pm by Eugene52 »
Logged

Let's Talk Treasure right here on Thunting.com

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 #41 on: August 14, 2009, 01:01:25 am »
Go Up Go Down

do i need some measuring devices to start delta pulse

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg43580.html#msg43580




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 #42 on: August 14, 2009, 06:12:26 am »
Go Up Go Down

when i buy microshemes there are dip and so wich i need

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg43627.html#msg43627




« Last Edit: August 14, 2009, 06:16:29 am by masons21 »
Logged
Offline goldigger
Silver Member
*

Join Date: Jun, 2009
Thank you4

Activity
0%
Male
Canada
Posts: 1125
Referrals: 0

5400.00 Gold
View Inventory

Awards

Bounty  Hunter and several more.
« Reply #43 on: August 14, 2009, 06:42:10 am »
Go Up Go Down

masons21;

You might also try a TL071, if you can not get the 81, its not as good, and in the worst case, try an LM741 / NE741, its very common but is slightly noisy and no jfet input, but what ever works, works!

goldigger

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg43633.html#msg43633




Logged

goldigger

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 #44 on: August 16, 2009, 09:38:22 am »
Go Up Go Down

in my sheme are 2N3094 and 2N tranzistor tipes can i use bc tanzistors

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg44091.html#msg44091




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 you399

Activity
0%
Male
United States
Posts: 2630
Referrals: 0

17957.00 Gold
View Inventory

Awards

Teknetics , Fisher , Discovery3300 and TIANXUN 19 kHz VLF Metal Detector
« Reply #45 on: August 16, 2009, 11:42:30 am »
Go Up Go Down

Quote:Posted by masons21
in my sheme are 2N3094 and 2N tranzistor tipes can i use bc tanzistors



Hello Masons . General purpose NPN Fairchild 2N3094 = BC546 .  2N3094 and 2N3096 are almost obsolete .  Shocked
HH.........Eugene

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg44107.html#msg44107



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

Please register for viewing them.

BC546_547_548_CNV_2.pdf


« Last Edit: August 16, 2009, 11:46:08 am by Eugene52 »
Logged

Let's Talk Treasure right here on Thunting.com

Offline goldigger
Silver Member
*

Join Date: Jun, 2009
Thank you4

Activity
0%
Male
Canada
Posts: 1125
Referrals: 0

5400.00 Gold
View Inventory

Awards

Bounty  Hunter and several more.
« Reply #46 on: August 17, 2009, 01:36:16 am »
Go Up Go Down

masons21;

Any transistor equivalent to the 2N type, called for, is  good.

goldigger

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg44247.html#msg44247




Logged

goldigger

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 #47 on: September 10, 2009, 12:20:35 pm »
Go Up Go Down

hi
simple side pcb for delta pulse if you need it  Wink

br!

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg49046.html#msg49046



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

Please register for viewing them.

pcb single side.zip


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 you399

Activity
0%
Male
United States
Posts: 2630
Referrals: 0

17957.00 Gold
View Inventory

Awards

Teknetics , Fisher , Discovery3300 and TIANXUN 19 kHz VLF Metal Detector
« Reply #48 on: September 10, 2009, 01:10:45 pm »
Go Up Go Down

Quote:Posted by electrosoft
hi
simple side pcb for delta pulse if you need it  Wink

br!


Thank-You for posting the attachments Electrosoft !!
HH........Eugene

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg49053.html#msg49053




Logged

Let's Talk Treasure right here on Thunting.com

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 #49 on: October 05, 2009, 02:05:23 am »
Go Up Go Down

Does Sniffer have another head (coil) for bigger targets ?

Linkback:

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

http://www.thunting.com/smf/index.php/topic,2887.msg52678.html#msg52678




Logged
Print
Pages:  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... 89   Go Up
Jump to:  

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