Collapsing circuit PLEASE!
Adam Phillip Churvis
A few days ago I requested some information regarding collapsing
and/or cascading circuits for a custom home security alarm I would
like to build. While I really appreciate the fact that people are
willing to help me with something I know nothing about, I have
received nothing regarding MY question, but have instead:
1) Provided the seed for two other people in this newsgroup to snipe
at one another regarding one's suggested ALTERNATIVE to a collapsing
and/or cascading circuit, and
2) Received numerous alternatives--none of which I can use because of
very specific operating requirements.
PLEASE don't get me wrong--I really appreciate willingness to help,
but I need help for the specific subject of collapsing circuits (I
found a cascading circuit in one of the Radio Shack books since my
last post) rather than someone else's idea of how an alarm system
should work.
So here is my exact question: "What is a collapsing circuit, and
where can I find a circuit diagram of one?"
Your replies to this question are most appreciated.
Adam Churvis
Richard M.
Adam Phillip Churvis wrote:
>
> So here is my exact question: "What is a collapsing circuit, and
> where can I find a circuit diagram of one?"
>
> Your replies to this question are most appreciated.
>
> Adam Churvis
Two things:
1) You have not asked a question that can be answered.
There are a myriad of cascading and/or collapsing circuits. Since you have not placed
your question into context, I doubt anyone will be able to help you until you do.
2) You came into a public forum asking for help. If you get none... you get none.
You have nothing to complain about. Any thread that spurs off of your posting is
valid and is not necessarily for you. If it didn't contain the info you wanted... it
still contained information somebody found useful or thought provoking.
In any event... what is your loss?
Those of us who do take the time to answer questions here don't like being chided for
not answering or not giving the answer you wanted. Fact of the matter is, we are not
paid consultants. Get it?
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bsp...@cyberramp.net
pres...@prodenhance.com (Adam Phillip Churvis) wrote:
>So here is my exact question: "What is a collapsing circuit, and
>where can I find a circuit diagram of one?"
In 16 years of electronics, I have never heard of this.
Can you tells us your source for this description/name ?
..Bryan
daniel indyk
Adam Phillip Churvis wrote:
>
> A few days ago I requested some information regarding collapsing
> and/or cascading circuits for a custom home security alarm I would
> like to build. While I really appreciate the fact that people are
> willing to help me with something I know nothing about, I have
> received nothing regarding MY question, but have instead:
>
> 1) Provided the seed for two other people in this newsgroup to snipe
> at one another regarding one's suggested ALTERNATIVE to a collapsing
> and/or cascading circuit, and
>
> 2) Received numerous alternatives--none of which I can use because of
> very specific operating requirements.
>
> PLEASE don't get me wrong--I really appreciate willingness to help,
> but I need help for the specific subject of collapsing circuits (I
> found a cascading circuit in one of the Radio Shack books since my
> last post) rather than someone else's idea of how an alarm system
> should work.
>
> where can I find a circuit diagram of one?"
>
>
> Adam Churvis
i think that the reason that you've not received any replies is that
nobody knows (i may be wrong on that one). i've been around electronics
for a wee while and i've never heard of one. what does the collapsing
refer to? is it a voltage (some kind of relaxation oscillator perhaps)
or what? or is it a circuit that folds up when you're finished with it
for easy storage?......joke :)
good luck anyway
____________________________________________________________________________________
* Daniel Indyk Research Engineer Institute of Respiratory Medicine.
* David Read Laboratory Blackburn Building University of Sydney.
* email: d...@blackburn.med.su.oz.au fax:++ 61 2 550 3851 phone: ++ 61
2 351 6125
____________________________________________________________________________________
Mark Kinsler
Adam Phillip Churvis <pres...@prodenhance.com> wrote:
>
>So here is my exact question: "What is a collapsing circuit, and
>where can I find a circuit diagram of one?"
>
I'd go back and check your original source. I somehow get the impression
that you were asking some alarm guy how all his stuff worked, and he
didn't want to tell you, so he figured he'd keep you busy by telling you
that it all depended on "collapsing circuits". This practice would not be
dissimilar to the requests for striped paint and skyhooks traditionally
given to apprentice toolroom clerks in industry.
I never heard of a collapsing circuit, either, though I've certainly built
some which have collapsed. Most old-time wired alarms detected the
continuity of a single wire which connects many switches (on windows and
doors, for example) in series. The wire is also run through lead-foil
window tape to detect glass breakage. Newer systems check the status of
each switch with a small computer system, and the switches are very
sophisticated.
If you're simply hooking up an alarm system, buy a kit or call someone
like ADT. There's enough competition in the alarm business that prices
are pretty low and it's not worth inventing everything yourself.
Mark Kinsler
Ted Davis
In article <5b14kk$2...@camel2.mindspring.com>, pres...@prodenhance.com
says...
>
I too have been doing electronics for a while (>40 years) and I too haven't a
clue to what a "collapsing circuit" might be. If you can state the design
goal in *very* simple terms it might help us understand what you want to do.
--
T.E.D. (tda...@umr.edu)
Richard Torrens
> So here is my exact question: "What is a collapsing circuit, and
> where can I find a circuit diagram of one?"
I, too would be interested to know the answer: 35 years in electronics and a
new circuit!!!!
--
/| Richard Torrens
/ |
/ | 4 Q D - 4...@argonet.co.uk
/ | |
/ /| | We manufacture
/ / | | MOSFET controllers for battery operated motors
/_/__| |____
/_____ ____\ See us on http://www.argonet.co.uk/users/4qd
/ _ \| | _ \ our www site also contains FAQ sheet on motors & controllers
| | | | | | | | and a selection of interesting circuit diagrams
| |_| | | |_| |
\__\_\ |____/ We use an Acorn StrongARM RISC-PC 32 bit computer.
Richard Steven Walz
In article <5b1s3q$h79$4...@newshost.cyberramp.net>,
<bsp...@cyberramp.net> wrote:
>pres...@prodenhance.com (Adam Phillip Churvis) wrote:
>
>>So here is my exact question: "What is a collapsing circuit, and
>>where can I find a circuit diagram of one?"
>Can you tells us your source for this description/name ?
>..Bryan
Simply a movie jargon term for an active circuit used for either burgular alarm
tripping or for active supposedly undefuseable bomb trigger circuits. There
are dozens of ways to do stuff like this, and it is NOT some special class of
circuit in EE. It's an application circuit for alarms and ordinance. Maybe
ask a bomb squad EE what the proper name is. It seems to be a common lingo in
the movie trade, but I have no idea whether the term actually originates from
ordinance or not.
-Steve
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