[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 ... 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 ... 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 ram
Silver Member
*

Join Date: Jul, 2007
Thank you136

Activity
0%

Portugal
Posts: 814
Referrals: 0

5270.00 Gold
View Inventory

Awards
« Reply #420 on: September 08, 2010, 08:44:35 am »
Go Up Go Down

hello darren, just asked eugene52 the schematic and pcb w/c is dp double sided he designed. my file was in my usb drive i have to search it. i will post it here if i found.

regards, ram,

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198889.html#msg198889




Logged
Offline earthope
Pull Tab
*

Join Date: Aug, 2010
Thank you0

Activity
0%

Jordan
Posts: 7
Referrals: 0

20.00 Gold
View Inventory

Awards
« Reply #421 on: September 13, 2010, 10:54:11 am »
Go Up Go Down

hi all
i have asking around for the parts required for the DP and i have noticed that the capacitors ( C1-C32 ) have different voltages for the same capacitance value, and i got confused which voltage do i take, can any one please advise on this,
please note also that this is my first time ever working on an electronic board so there will lots of other question as i go through this project

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198890.html#msg198890




Logged
Offline GoldDigger1950
The Old Man and the Soil
Global Moderator
Platin Member
*****

Just call me GD.
The Old Man and the Soil
Join Date: Jun, 2009
Thank you205

Activity
7%
Male
United States
Posts: 11166
Referrals: 12

47578.00 Gold
View Inventory

Awards

Garrett Groundhog ADS, Garrett Sea Hunter, Bounty Hunter Tracker IV, Bounty Hunter Pioneer 505,Minelab Eldorado Mk II, Tesoro Compadre, Tesoro Tiger Shark & A Few Home Brew Detectors
« Reply #422 on: September 14, 2010, 02:19:54 pm »
Go Up Go Down

Quote:Posted by earthope
hi all
i have asking around for the parts required for the DP and i have noticed that the capacitors ( C1-C32 ) have different voltages for the same capacitance value, and i got confused which voltage do i take, can any one please advise on this,
please note also that this is my first time ever working on an electronic board so there will lots of other question as i go through this project


The voltage rating on a capacitor is the maximum that the device can sustain without being destroyed by the internal dialectric breaking down. Most designers use a minimum of 10% over the maximum expected voltage. If a capacitor is specified as .1uf 16v, you can substitute it with a .1uf and a higher voltage rating but never lower. The only other limiting factor is the size. If it's too big for your project, don't use it.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198891.html#msg198891




Logged

It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!

Offline Darren in NC
Pull Tab
*

Join Date: Jan, 2009
Thank you0

Activity
0%

United States
Posts: 17
Referrals: 0

90.00 Gold
View Inventory

Awards
« Reply #423 on: September 14, 2010, 08:46:46 pm »
Go Up Go Down

Quote:Posted by ram
hello darren, just asked eugene52 the schematic and pcb w/c is dp double sided he designed. my file was in my usb drive i have to search it. i will post it here if i found.

regards, ram,


Eugene, I have Sprint Layout 5.0 if you're willing to post the files. Thanks so much!

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198892.html#msg198892




Logged
Offline earthope
Pull Tab
*

Join Date: Aug, 2010
Thank you0

Activity
0%

Jordan
Posts: 7
Referrals: 0

20.00 Gold
View Inventory

Awards
« Reply #424 on: September 17, 2010, 09:46:51 am »
Go Up Go Down

Quote:Posted by GoldDigger1950
The voltage rating on a capacitor is the maximum that the device can sustain without being destroyed by the internal dialectric breaking down. Most designers use a minimum of 10% over the maximum expected voltage. If a capacitor is specified as .1uf 16v, you can substitute it with a .1uf and a higher voltage rating but never lower. The only other limiting factor is the size. If it's too big for your project, don't use it.

thanks GD for the help
but still if you look through the part list provided with this project (by Eugene) you can see that non of the capacitors has a voltage specified, and i wonder if there is an updated list that specifies voltage for the capacitors

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198893.html#msg198893




Logged
Offline Darren in NC
Pull Tab
*

Join Date: Jan, 2009
Thank you0

Activity
0%

United States
Posts: 17
Referrals: 0

90.00 Gold
View Inventory

Awards
« Reply #425 on: September 17, 2010, 01:57:48 pm »
Go Up Go Down

Use polyester film capacitors @100 volt rating and 5% tolerance. Your number 1 choice of capacitor should be "Polyester Film" then second choice should be "Mylar"

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198894.html#msg198894




Logged
Offline japanese
Bronze Member
*

Join Date: Mar, 2010
Thank you45

Activity
0%

Egypt
Posts: 287
Referrals: 0

1625.00 Gold
View Inventory

Awards

GARY PI
« Reply #426 on: September 17, 2010, 03:59:08 pm »
Go Up Go Down

Hi earthope
          - all capacitor(chemical) is specified UF is 16v,25v.(eg.10uf,100uf,220uf,
                   4700uf,10000uf /25v)
          - all capacitor(mk,mylar) is specified nf is 50v,63v,100v. (eg. 1nf,1.5nf,
              10nf,100nf,220nf /50v)(toleranc 5% markite (j) ,(100nf=104 j / 50v).

          - all capacitor(ceramic)  is specified pf is 16v .( eg.c13=15pf,c17=47pf)

 best time
 j.



Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198895.html#msg198895



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

Please register for viewing them.

all.jpg


Logged
Offline cuirava
Bronze Member
*

Join Date: Jul, 2010
Thank you1

Activity
0%

United States
Posts: 264
Referrals: 0

620.00 Gold
View Inventory

Awards

fisher
« Reply #427 on: September 17, 2010, 04:51:53 pm »
Go Up Go Down

man I learning something here,thanks a bunch

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198896.html#msg198896




Logged
Offline raff33
Copper Member
*

Join Date: Jan, 2009
Thank you1

Activity
0%

Morocco
Posts: 67
Referrals: 0

390.00 Gold
View Inventory

Awards
« Reply #428 on: September 18, 2010, 04:48:58 am »
Go Up Go Down

hi japanese,
what can the probleme if i do capacitors"Polyester Film"like ( 3x1nf5 400v ) ;( 1nf 250v ) ?

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198897.html#msg198897




Logged
Offline japanese
Bronze Member
*

Join Date: Mar, 2010
Thank you45

Activity
0%

Egypt
Posts: 287
Referrals: 0

1625.00 Gold
View Inventory

Awards

GARY PI
« Reply #429 on: September 18, 2010, 06:20:18 am »
Go Up Go Down

Hi raff33
         no probleme for use 250v,400v if you cant get 50v,63v,100v but big size & the
         working voltage is 12v . toleranc 5%.
 best time
 j.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,28024.msg198898.html#msg198898




Logged
Print
Pages:  1 ... 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 ... 90   Go Up
Jump to:  

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