the Otherpower.com Discussion Board || Comments resister size question

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

resister size question | 14 comments (14 topical, editorial)

Re: resister size question (3.00 / 0) (#2)
by jaskiainen (jaskiainen74inhottestmailcompany) on Wed Sep 10th, 2008 at 08:45:28 AM MST
(User Info)

Hi Andy!

That 4.7k resistor seems ok to me.
I think that digital multimeters are not that accurate for the input voltage.
If you try with old battery and start to get some strange measurements and
after that measure your 9V battery voltage it propably be nearer 6-7 volts.

Any voltage between 8-10 for your multimeter should be just fine...
Best regards jaskiainen

Re: resister size question (3.00 / 0) (#4)
by TheCasualTraveler (a.miklos@yahoo.com) on Wed Sep 10th, 2008 at 08:53:39 AM MST
(User Info) http://thecasualtraveler.com/wind.htm

Thanks,
Your right, when the battery gets low on these meters they really act squirlly, mostly with the numbers on the display going up and down flashing high and low and because I always forget to turn them off I get a lot of low batteries.
Andy
[ Parent ]

Re: resister size question (3.00 / 0) (#10)
by Norm (peppysue@suite224.net) on Wed Sep 10th, 2008 at 09:28:33 AM MST
(User Info)

Too bad they don't have an automatic shut-off
like even the cheapest $1 calculators, besides
some of the $1 calculators are even dual (batt.
and solar) powered....I imagine it would even be
possible to have a cheap multi-meter powered with
a button battery like the $1 calculators!
( :>) Norm
[ Parent ]

resister size question | 14 comments (14 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:

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!