Re: End Of Line Terminating Resistor, Or Module, On Older Interconnected Smoke Detectors ?

["Group Moderator" <GroupModerator@xxxxxxxxxxx>]

"Robert L. Bass" <robertlbass@xxxxxxxxxxx> wrote in message
news:pr6dncilS8H5P_vfRVn-pg@xxxxxxxxxxxxxx
> That depends on how old the system is.  Some systems we worked on in the
> late 70's didn't require an EOL resistor on fire alarm loops.
> Regards,
> Robert L Bass



Mike Said:
Any require Dual Battery Diode Harnesses? As you wrote.


Battery Diode Harness StoryFrom: alarmsrvcs@xxxxxxx (Group Moderator)
Newsgroups: alt.security.alarms
Subject: REPOST: Battery Diode Story - GOOFY BASS WRONG AGAIN
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Date: 22 May 2002 07:13:17 GMT
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Message-ID: <20020522031317.05165.00000307@xxxxxxxxxxxxx>


REPOSTED FOR THOSE WHO REQUESTED IT:
This is the guy ROBERT L. (Lunatic) Goofy Bass that his Clones think he is
so
knowledgeable about alarms.
*******************************************************************************

Battery Diode Story

Bass Was Totally Wrong - This was taken right from www.google.com
Subject: Re: Connecting more batteries
Newsgroups: alt.security.alarms
Date: 2002-04-08 07:38:27 PST

Robert L Bass" <robertlbass@xxxxxxxxxxx> wrote in message
news:<D7Sr8.21978$l7.2454793@xxxxxxxxxxxxxxxxxxxxxxxxxxx>... > > > >

I think you've got this one wrong, friend. Napco provided a Battery Diode >
 > >
> Harness for use on their MA-3000 panels for years. I've used them to wire
>  > >
> > as many as five 7-Amp Hour batteries in parallel on one of those panels
when > > > > I installed their add-on power supply. In fact, it's still
listed
on the > > > > ADI server as a valid part, although AFAIK Napco has stopped
producing them. > > > > > > > > If you make current flow in the wrong
direction
on a battery charging > > > > circuit you'll have a lot more than a dead
battery to worry about. To test > > > > your theory take a discharged
battery
and connect its terminals to another, > > > > fully charged battery with the
terminals reversed (so you can get current to > > > > "flow back into the
dead
battery"). All kidding aside, don't really try > > > > this. The results can
include fire and explosion, depending on the type of > > > > battery and its
condition. > > > > > > > > BTW, the charging circuits on many alarms are
actually 13.8VDC -- not 12 > > > > Volts. > > > > > > > > Regards, > > > >
Robert L Bass > > > > > > > > =============================> > > > > Bass
Home
Electronics > > > > The Online DIY Alarm Store > > > >
http://www.Bass-Home.com
> > > > 2291 Pine View Circle > > > > Sarasota, FL 34231 > > > >
> > > > 877-722-8900
 Sales & Tech Support > > > > 941-925-9747 Fax > > > >
robertlbass@xxxxxxxxxxx >
> > > =============================>

This is the CORRECT answer
Again taken from www.google.com

OLEG" <OLEGSECUR@xxxxxxx> wrote in message > >
news:78df7100.0204071036.71857181@xxxxxxxxxxxxxxxxxxxxx > > > Sorry, Robert,
but it looks like you have this one wrong on two counts > > > and Nomen
Nescio
is right on the money. Like you, I have also done > > > countless
multiple-battery MA3000 commercial fire and burg installs > > > over the
years.
> > > > > > First, the Battery Diode Harness is ONLY used in commercial fire
> > > > > > or
> > > burg applications where you do not quite need the power of the > > >
optional PS3000 power supply, but do need to supervise for AC > > >
brownout.
This module connects the PS3000 jack to the AUX relay, which > > > is
triggered
upon brownout. > > > > > > Secondly, the Dual Battery Harness, to which I
believe you were > > > referring in your post, does not have a diode in it
at
all, it simply > > > parallels the battery leads to allow the connection of
2
or more > > > batteries to the MA3000, or any other panel. > > > > > > I do
not
think UL would require a diode in the battery harness that > > > would waste
a
valuable 0.7 VDC in a low battery condition just to > > > protect against
the
installer reversing the battery leads > > > accidentally. There is already a
thermal circuit breaker on the board > > > for this type of protection. > >
 > >
> > Also, as Nomen states, if you do not have battery current flowing in > >
> >  >
two directions, you will soon have a very dead battery. > > > > > > Best
Regards, Oleg

HERE NORMAN PROVES GOOFY ASS WRONG ALSO

Nomen Nescio wrote: > > > > > > > > > > Better not use a diode to isolate
the
two batteries. Remember, current has > > > > > to flow both directions on a
battery lead: into the battery when it's > > > > > charging, and out of the
battery when it's discharging. So if you orient > > > > > the anode towards
the
charging terminal and the cathode towards the > > > > > battery, the battery
will charge but will not be able to deliver power to > > > > > the system
when
the AC is off. If you orient the diode the other > > > > > direction, the
battery will not charge. > > > > > > > > > > Diodes also have a 0.6 volt
drop
across them, so if you charge a battery > > > > > through a diode, you are
not
getting the full charging voltage. > > > > > > > > > > Use a fuse or circuit
breaker instead, preferably the harness provided by > > > > > the panel
manufacturer.

SO those who want to take Goofy Bass's advise because you think he knows
every
thing -THINK TWICE.

Visit The Goofy Bass Website
http://www.goofysplace.com/


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