Go to Otherpower.com Home Page Go to Forcefield Shopping Cart Go to Wondermagnet.com Home Page
Front Page - [Homebrewed Electricity-- (wind) (solar) (hydro) (steam) (controls) (storage) (mechanical)] - Classifieds - Site News
Everything - Newbies - [Remote Living-- (housing) (heat) (light) (water)] - Rants & Opinion - Diaries - Our Products
How to build a cheap LED voltmeter | 17 comments (17 topical, editorial)
Re: How to build a cheap LED voltmeter (3.00 / 0) (#2)
by Nando (nando37-at-tx-dot-rr-dot-com Correct theanti-spam) on Sun Dec 19th, 2004 at 08:32:40 PM MST
(User Info)

BT :

I have circuits that could be built for that purpose, please connect with me directly.

Using the LM3914 and some ancillary parts

nando37-at-comcast-dot-net

Regards

Nando



Re: How to build a cheap LED voltmeter (3.00 / 0) (#3)
by BT Humble (bt_humble@bigpond.com) on Sun Dec 19th, 2004 at 08:48:29 PM MST
(User Info) http://www.humbletown.org


BT :
I have circuits that could be built for that purpose, please connect with me directly.

Using the LM3914 and some ancillary parts

Thanks Nando, I've already looked at those (in fact, the $14.95 kit I mentioned is based on that IC).  Unfortunately the best price I can get for LM3914 chips is $4.45 each (in quantities of 25 or more), whereas I can build this entire circuit (including the PCB) for $4.60

Additionally, this cicuit only draws 30mA, while the LM3914 circuits that I've seen (at least 3 variations available on the web) are around double that.

BTH

[ Parent ]



Re: How to build a cheap LED voltmeter (3.00 / 0) (#6)
by jimjjnn (jimjjnn at yahoo dot com) on Mon Dec 20th, 2004 at 06:34:26 AM MST
(User Info)

The 3914 circuit is a great one. Radio Shack also has a circuits book showing various configurations using the 3914. It may even simplify the circuit for you and will use fewer parts( I think)
Jim Denver,CO
[ Parent ]


How to build a cheap LED voltmeter | 17 comments (17 topical, 0 editorial)

Menu
· create account
· How to use the board
· FAQs
· search the board
· Google search the board
· Old Otherpower Board

Login
Make a new account
Username:
Password:

Powered by Scoop
You must be a registered user to post here. It's easy and free, and the link is on the upper right side of your page.
All trademarks and copyrights on this page are owned by their respective companies. Postings are owned by the poster, but may be deleted or moved at the ADMIN's sole discretion. The Rest © 2003 Forcefield.
You can Email the board ADMIN here. PLEASE include the username you signed up with!