Wireless doorbell

V

Van Chocstraw

Guest
My doorbell stopped so I checked the 3 batteries in the ringer unit
with a flash light. Sure enough, one was dead as only 2 would light the
light and the one would not with either of the other. Decided to put3
new batteries in the unit. Later went down to the bench and for some
reason check the batteries on the meter. One was 1.5 volts, the second
was 1.5 and the third was NEGATIVE 1.5 volts! Not dead. I have never
seen a D size dry cell reverse polarity. This unit did work when it was
installed 3 years ago. How is it possible for the D cell to reverse
polarity. The ringer unit is strictly batteries, no AC plug.



PS:any way to get rid of all the shit messages in this group?
 
Van Chocstraw wrote:
My doorbell stopped so I checked the 3 batteries in the ringer unit
with a flash light. Sure enough, one was dead as only 2 would light the
light and the one would not with either of the other. Decided to put3
new batteries in the unit. Later went down to the bench and for some
reason check the batteries on the meter. One was 1.5 volts, the second
was 1.5 and the third was NEGATIVE 1.5 volts! Not dead. I have never
seen a D size dry cell reverse polarity. This unit did work when it was
installed 3 years ago. How is it possible for the D cell to reverse
polarity. The ringer unit is strictly batteries, no AC plug.



PS:any way to get rid of all the shit messages in this group?
Click to expand...
Some well tuned message filters in Seamonkey do a pretty good job for me.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal
ElectroOptical Innovations
55 Orchard Rd
Briarcliff Manor NY 10510
845-480-2058
hobbs at electrooptical dot net
http://electrooptical.net
 
Van Chocstraw wrote:
My doorbell stopped so I checked the 3 batteries in the ringer unit
with a flash light. Sure enough, one was dead as only 2 would light the
light and the one would not with either of the other. Decided to put3
new batteries in the unit. Later went down to the bench and for some
reason check the batteries on the meter. One was 1.5 volts, the second
was 1.5 and the third was NEGATIVE 1.5 volts! Not dead. I have never
seen a D size dry cell reverse polarity. This unit did work when it was
installed 3 years ago. How is it possible for the D cell to reverse
polarity. The ringer unit is strictly batteries, no AC plug.
Click to expand...
I've never heard of a non-rechargable battery reversing its voltage -
this suggests a read error...

John :-#)#


--
(Please post followups or tech inquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
 
John Robertson wrote:
Van Chocstraw wrote:
My doorbell stopped so I checked the 3 batteries in the ringer unit
with a flash light. Sure enough, one was dead as only 2 would light
the light and the one would not with either of the other. Decided to
put3 new batteries in the unit. Later went down to the bench and for
some reason check the batteries on the meter. One was 1.5 volts, the
second was 1.5 and the third was NEGATIVE 1.5 volts! Not dead. I have
never seen a D size dry cell reverse polarity. This unit did work when
it was installed 3 years ago. How is it possible for the D cell to
reverse polarity. The ringer unit is strictly batteries, no AC plug.



I've never heard of a non-rechargable battery reversing its voltage -
this suggests a read error...

John :-#)#


Had somebody else written this I would have said the same thing. I
Click to expand...
checked it several times since I couldn't believe it. Thought maybe the
meter was kibosh. Check the other batteries, check ok, that
one...reversed, negative on top, positive on bottom. Freak battery.
 
Van Chocstraw wrote:
John Robertson wrote:
Van Chocstraw wrote:
My doorbell stopped so I checked the 3 batteries in the ringer unit
with a flash light. Sure enough, one was dead as only 2 would light
the light and the one would not with either of the other. Decided to
put3 new batteries in the unit. Later went down to the bench and for
some reason check the batteries on the meter. One was 1.5 volts, the
second was 1.5 and the third was NEGATIVE 1.5 volts! Not dead. I have
never seen a D size dry cell reverse polarity. This unit did work
when it was installed 3 years ago. How is it possible for the D cell
to reverse polarity. The ringer unit is strictly batteries, no AC plug.



I've never heard of a non-rechargable battery reversing its voltage -
this suggests a read error...

John :-#)#


Had somebody else written this I would have said the same thing. I
checked it several times since I couldn't believe it. Thought maybe the
meter was kibosh. Check the other batteries, check ok, that
one...reversed, negative on top, positive on bottom. Freak battery.

I'd guess the reversed battery gave up before the other two, which
Click to expand...
continued to discharge through the dead one. The dead one shows a
"reverse charge" now, but I suspect it hasn't much current capacity.
Most of its contents are just flat, but some small part of it took a charge.
Disposable batteries don't recharge well, but sometimes you'll see
things like that. Is it an Alkaline D cell, or an old-style "Heavy
Duty"? I haven't seen it happen with an Alkaline cell.
 
On Wed, 21 Oct 2009 19:52:19 -0400, Van Chocstraw
<boobooililililil@roadrunner.com> wrote:

My doorbell stopped so I checked the 3 batteries in the ringer unit
with a flash light. Sure enough, one was dead as only 2 would light the
light and the one would not with either of the other. Decided to put3
new batteries in the unit. Later went down to the bench and for some
reason check the batteries on the meter. One was 1.5 volts, the second
was 1.5 and the third was NEGATIVE 1.5 volts! Not dead. I have never
seen a D size dry cell reverse polarity. This unit did work when it was
installed 3 years ago. How is it possible for the D cell to reverse
polarity. The ringer unit is strictly batteries, no AC plug.
Click to expand...
The one with the reverse polarity was semi-dead when installed. When
it hit zero, the other good batteries continued to "charge" this
battery, but backwards. It's a common problem when mixing cells in a
series connected battery pack. As the pack discharges, the weakest
cells will tend to be reverse polarized.

More:
<http://answers.yahoo.com/question/index?qid=20071202053948AASSIMS>
<http://www.physicsforums.com/showthread.php?t=312913>

PS:any way to get rid of all the shit messages in this group?
Click to expand...
Sure. Hire a professional hit man and have him start at the top of
this spammer list:
<http://www.spamhaus.org/rokso/index.lasso>
After a few of the top spammers are eliminated, the rest should get
the clue and find something else to do.

Otherwise, look into Usenet filters such as Newsproxy/Nfilter
<http://www.fitnwell.net/nfilter.htm>
or whatever is built into your news reader. I'm using Forte Agent
5.0, which works fairly well.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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