Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Experiments & Modifications



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 07-24-2008, 07:47 AM #1
pseudolobster's Avatar
Class 3R Laser
 
Join Date: Jan 2008
Location: BC, Canada
Posts: 1,734
Rep Power: 153
pseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond repute
pseudolobster pseudolobster is offline
Class 3R Laser
pseudolobster's Avatar
 
Join Date: Jan 2008
Location: BC, Canada
Posts: 1,734
Rep Power: 153
pseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond reputepseudolobster has a reputation beyond repute
Default Is there any way to diy measure capacitance?

So surface mount capacitors... they're really useful but are never labeled.

Using a multimeter, a stopwatch, a ball of twine, two matchsticks, and a rubber band is there any way to macguyver together some way of identifying blank caps?


__________________
Custom Text
pseudolobster is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 07-24-2008, 09:42 AM #2
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 3157
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Bionic-Badger Bionic-Badger is offline
Class 4 Laser
Bionic-Badger's Avatar
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 3157
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Default Re: Is there any way to diy measure capacitance?

Yes you can, but you need to have an oscillator signal source. *Basically what happens is you construct a signal filter using a resistor and capacitor, and measure the attentuation of that filter at certain frequencies. *Using the resistor value and filter response, you can work out the value of the capacitor. It works with inductors too.

It's a bit easier if you use a sound-card to both source the signals and measure the input. *I once saw a program that did this for you automatically, but I can't find it.

__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger is offline   Reply With Quote
Old 07-24-2008, 12:09 PM #3
laserguys
Guest
 
Posts: n/a
laserguys
Guest
 
Posts: n/a
Default Re: Is there any way to diy measure capacitance?

You can pickup a capacitor checking Multi Meter on eBay for less than $16.00 delivered. And you end up this a full function DMM to boot.

Here are two I found real quick. The first one seems a bit better.

Sorry I don't have enough posts to insert a link.

httX//cgi.ebay.ca/Multi-Function-Digital-Multimeter-Capacitance-Tester-DC_W0QQitemZ290246782712QQihZ019QQcategoryZ42291QQ ssPageNameZWDVWQQrdZ1QQcmdZViewItem

httX://cgi.ebay.ca/Slim-Multi-Meter-Function-Digital-Capacitance-Tester-DC_W0QQitemZ300243483915QQihZ020QQcategoryZ42291QQ ssPageNameZWDVWQQrdZ1QQcmdZViewItem

Just fix the &quot;httX&quot;

Hope this helps.
  Reply With Quote
Old 07-24-2008, 01:05 PM #4
laserguys
Guest
 
Posts: n/a
laserguys
Guest
 
Posts: n/a
Default Re: Is there any way to diy measure capacitance?

Sorry, forget the 2nd one it has no cap checking.
This one is the better one at $15.98 delivered.

http://cgi.ebay.ca/Multi-Function-Di...QQcmdZViewItem
  Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 12:54 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC