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

Re: resister size question (3.00 / 0) (#3)
by ghurd on Wed Sep 10th, 2008 at 08:50:45 AM MST
(User Info)

Don't do it.
The meter will pop.
Takes some fancy stuff to run a meter from the battery powering it.
http://www.fieldlines.com/story/2008/5/3/1306/72467
G-

Re: resister size question (3.00 / 0) (#5)
by ghurd on Wed Sep 10th, 2008 at 08:53:40 AM MST
(User Info)

Lemme try that again.
Takes some fancy stuff to measure the battery that powers the meter measuing the battery.
Easiest to use 2 batteries.
G-

[ Parent ]

Re: resister size question (3.00 / 0) (#8)
by TheCasualTraveler (a.miklos@yahoo.com) on Wed Sep 10th, 2008 at 08:59:16 AM MST
(User Info) http://thecasualtraveler.com/wind.htm

Thanks for the link to that thread Ghurd. I missed it in May and didn't find it in a search.
Andy
[ Parent ]

Re: resister size question (3.00 / 0) (#9)
by Norm (peppysue@suite224.net) on Wed Sep 10th, 2008 at 09:09:29 AM MST
(User Info)

Like my comment above...but you would really
need a 7809 voltage regulator to go along with
it?

((At the present time for my needs I merely use
2 for a $1 9v batteries )(even cheap batteries
there are better and really crappy and cheap !))
Lucky so far one brand that I get last about a
week when left on all the time....after that start to get unreliable readings
( :>) Norm
[ Parent ]

Re: resister size question (3.00 / 0) (#11)
by ghurd on Wed Sep 10th, 2008 at 09:35:55 AM MST
(User Info)

I think the $3 yellow HFs read OK with a
battery between 7 and 11V.
Not sure about the red ones.

A 7809 isn't fancy.
It worked for resistors and
batteries other than the one powering the 7809.

It could not read the voltage of
the battery powering the 7809.
Took about a half a nano-second to
know that was a very bad idea! LOL

[ Parent ]

resister size question | 14 comments (14 topical, 0 editorial)

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