Want to connect smoke alarms to house alarm???

[JSW]

Hi
I want to be able to connect smoke alarms to my existing house alarm. At my
local alarm shop they sell a small pcb which replaces the 9v PP3 battery and
allows the smoke alarm to be connected to the main alarm. This pcb probably
has a voltage regulator on it (12v to 9v) and some sort of current sensing
to trigger the main alarm when the smoke alarm sounds.
What I want is to be able to make this pcb myself as the shop wanted to much
for it and a want a few of them, does anybody know a circuit for such a
thing?

Cheers
John

 

[J. Stevens]

So, you're going to jury-rig the module designed to jury-rig the cheap
smokes because the ready-made one is too expensive?
Hahahahahahahahaha!
js

 

[Marc]

so what is the correct news group to be in?

John, you are in the wrong news group here.
Those so called pro's have no knowledge of electronics, it are
elementary alarm installers who let you believe for instance that they
program the alarm systems when they do only setup's..

Paul

 

[Frank Olson]

alt.retarded.flemish.idiots would work for Paul...

alt.do.it.yourself.and.forget.about.ul.so.let.your.house.burn.down.around.yo
ur.ears for the other...

 

[PauI :]

The correct news group should be a electronics group with one eventual
problem; they don't know probably the alarm signal requirements and
alarm input protocol.
So what can be asked here in this news group, when it is not found by
the manufacturer, is the "eventual" missing data items mentioned
above, the electronic part and design of PCB's (if required) have to
be asked in a electronic specific news group.

Paul

 

[Mark Leuck]

alt.retarded.flemish.idiots would work for Pxxl...

alt.do.it.yourself.and.forget.about.ul.so.let.your.house.burn.down.around.yo
ur.ears for the other...

No he should be in
alt.i.claim.to.be.an.rf.genius.who.bought.this.crap.and.am.suprised.it.didn'
t.work

http://www.eclats-antivols.fr/modules.php?name=Boutique&itm_ref=1845

 

[RH.Campbell]

No, John, you may or may not be in the right newsgroup. Paul however, it
seems can't be in any newsgroup in any meaningful way. He continues to
plague this newsgroup with his one way diatribes on RFI. I suggest you pay
him no mind; certainly no one else does....

He's our resident troll...

RHC

 

[Petem]

Paul why don't you start by saying that YOU don't know much in
electronics...

I asked you an easy question a few month ago and you were not even able to
respond...

do you want me to ask it again???

 

[PauI :]

Paul why don't you start by saying that YOU don't know much in
electronics...

I asked you an easy question a few month ago and you were not even able to
respond...

I answered but you where unable to understand.

ALL wireless alarm systems uses "RADIO WAVES as DATA COMMUNICATION
MEDIA between sensor and control panel" and as such are:
- Radio Frequency Interference (RFI) susceptible.
- Radio waves behave alike ALL AROUND the world.
- NO specific brand escape from it,
- ALL wireless alarm systems are unreliable during RFI.

Hope this enlighten your little peanuts..
Learn before and try to understand what is told to you!

Paul

 

[Mark Leuck]

Pxxl why don't you start by saying that YOU don't know much in
electronics...

I asked you an easy question a few month ago and you were not even able to
respond...

do you want me to ask it again???

Of course he doesn't know anything about RF, look at what he bought

http://www.eclats-antivols.fr/modules.php?name=Boutique&itm_ref=1845

Do you think someone who is rational would think this will protect anything?
Do you think someone who knows anything about RF wouldn't have checked the
specs?

Na, he's a nutcase who likes mens restrooms a bit too much

 

[PauI :]

:

Ok you've finally convinced everyone that nothing that uses wireless will ever
work. Radio, television, cell phones, satellites, garage door openers, nothing.

Quite right if they were in the same low power and critical range
conditions as wireless alarm systems, but they arrent.
The garage door opener and car key are in the same conditions but the
transmitter can be moved and repeat command till they get signal
access above RFI.

I mean, if interference is such a problem, then nothing wireless is able to
work.

See above

There are no circuits that can filter out interference.

NO, nothing can filter out RFI.
Filters may make RFI susceptibility on the side bands less critical
but even there they cant avoid it.
As mentioned before, find here after the different RF transmitter
sources who can disturb and will jeopardize wireless alarm systems
operation.

RF Transmitters operating:
- ON the wireless frequency
- Saturating the receiver
- Intermodulation
- Harmonics
- Falling in the receiver bandpass
- On the IF frequency
- and more...
In essence the problems caused by interference is the fact that by
no way two (or more) systems can use simultaneously the same frequency.

Oh ... Oh .. wait a minute. NOW I get it. Interference only affects alarm circuity.
Jim

Jimmy little boy, grow up.
Learn and try to understand the essential of radio communications, it
will help you to avoid stupid remarks in the future.

Paul

 

[PauI :]

You're and idiot.
Jim

Thanks for you deep feelings. Don't ask mine because i think you are
really a great person, really Jim.
You have so much knowledge that you will be able to handle all the
normal alarm installers tools, including cleaning cloths.

Paul