UK source for this magnetic switch?

[Ron]

Adrian C wrote:

Ron wrote:

Farnell also will hapily sell to the public via their website - The
Farnell organisation own CPC btw, I`ve also had good dealings with
Rapid Online.

Happily, that's a laugh.. :-(

Yeah they are happy to take your money whoever you are, the days of the
'trade only' wholesalers is more or less over. You fill in the order
form, authorise the credit card and the goods arrive next day, what`s so
dificult to understand about that?

The word is grudgingly. Both CPC and Farnell technical support is free
for account holders, and there is no minimum order for trade customers.
Other companies even have free post for trade customers on any order
size. Because on things like internet sales they have to agree to
"distance selling regulations" and similar, they end up losing money
dealing with consumers. Maplin is the only UK national choice for
hobbyists and small time repairers like me.

Never mind, if it works for you. Good

eBay and purchasing outside the UK works for me and yes; I know what a
scam fest eBay can sometimes be, but not in this case.

For example I recently had to replace a shot schottky SMD diode in a HP
printer SMPS. Per part, 20p each from Farnell. Minimun order charge Ł20.
Post and packing Ł4.25.

That`s because Farnell are in business to make money not cater for
hobbyists who want one diode. Do you want them to lose money so that you
can fix your printer on the cheap?

If you don't like CPC or Farnell, I suggest you try Rapid Electronics.

From an eBay seller in the states, Ł8 including postage for 500 diodes.
They were delivered within the week.

If it's urgent I jump in the car and find something in a shop closer. Or
risk a dodgy substitute for the part, which I really shouldn't do if
it's critical ....

Well, you are lucky to have a shop nearby which sells electronic
components. They are sadly few and far between these days.


Ron(UK)

 

[Adrian C]

Ron wrote:

Adrian C wrote:
Ron wrote:

Farnell also will hapily sell to the public via their website - The
Farnell organisation own CPC btw, I`ve also had good dealings with
Rapid Online.

Happily, that's a laugh.. :-(


Yeah they are happy to take your money whoever you are,

wrong. They have to discriminate.

the days of the

'trade only' wholesalers is more or less over.

wrong. They have to discriminate.

You fill in the order

form, authorise the credit card and the goods arrive next day, what`s so
dificult to understand about that?

I understand their terms and conditions perfectly.

That`s because Farnell are in business to make money not cater for
hobbyists who want one diode.

Exactly

Do you want them to lose money so that you

can fix your printer on the cheap?

I know they do. That is my point. They have to discriminate.

If you don't like CPC or Farnell, I suggest you try Rapid Electronics.

I go elsewhere as I have stated.

--
Adrian C

 

[John G.]

"Terry Pinnell" <terrypinDELETE@THESEdial.pipex.com> wrote in message
news:f0sqo4t0i8ge32jhqe7db98acs2476qj6i@4ax.com...

Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

--
Terry, East Grinstead, UK

Dragging this discussion back from the trading pinciples of some companies.

I do not know about the UK but in Australia and I suspect the USA this sort
of thing is easy to find at DIY stores like Bunnings (here) or Home
Depot/Lowes (in the US) in the build your self a burgular alarm aisle.

There are at least three layman's electronic suppliers in Aus, DSE (about
equiv to Radio Shack), Jaycar (a bit better) and Altronics. All have walk
in, chose for yourself, super market type shops. Surley the UK has
equivelents.

John G.

 

[Dave Plowman (News)]

In article <gmnqok$1ckr$1@energise.enta.net>,
IanM <look.in.my.sig@totally.invalid> wrote:

I am not aware of any other chain of retail electronic component
stockists, but hopefully someone knows of some alternatives.

Rapid Electronics have the best terms for small value mail order and post
pretty quickly. next day for most things. One shop I know of in London -
but haven't used - is Cricklewood Electronics.

http://www.cricklewoodelectronics.com/Cricklewood/home.php

--
*Why does the sun lighten our hair, but darken our skin?

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

 

[David Nebenzahl]

On 2/7/2009 3:32 AM Terry Pinnell spake thus:

Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

Sorry, I can't help, being in the US where things like this are
trivially easy to get.

Just one thing: did someone here say that switches like this were
typically N/O rather than N/C? And that such could be used for an alarm
circuit?

Think about it: if you have a N/O switch as an alarm sensor, all the bad
guy has to do to get in is to cut it out of the circuit. There's a
reason alarm switches are normally closed.

Hard to believe a N/C reed switch wouldn't be easy to buy somewhere in
England.


--
Personally, I like Vista, but I probably won't use it. I like it
because it generates considerable business for me in consulting and
upgrades. As long as there is hardware and software out there that
doesn't work, I stay in business. Incidentally, my company motto is
"If this stuff worked, you wouldn't need me".

- lifted from sci.electronics.repair

 

[Nobody]

On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl wrote:

Just one thing: did someone here say that switches like this were
typically N/O rather than N/C? And that such could be used for an alarm
circuit?

Think about it: if you have a N/O switch as an alarm sensor, all the bad
guy has to do to get in is to cut it out of the circuit. There's a
reason alarm switches are normally closed.

Phil Allison said:

** It's a better than even money bet Terry wants the switch to be closed
with a magnet nearby.

Which IS the NORMAL situation in an alarm installation.

IOW, it's a question of how you define "normally".

Reed switches are open in the absence of a magnetic field, and closed when
one is present.

For a relay, you would call such contacts "normally open".

But for a burglar alarm, the "normal" situation is for the magnetic field
to be present, from a permanent magnet in a door or window which is
"normally" adjacent to the reed switch. In this situation, the contacts
will be held closed.

 

[David Nebenzahl]

On 2/8/2009 10:11 PM Nobody spake thus:

On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl wrote:

Just one thing: did someone here say that switches like this were
typically N/O rather than N/C? And that such could be used for an alarm
circuit?

Think about it: if you have a N/O switch as an alarm sensor, all the bad
guy has to do to get in is to cut it out of the circuit. There's a
reason alarm switches are normally closed.

Phil Allison said:

** It's a better than even money bet Terry wants the switch to be closed
with a magnet nearby.

Which IS the NORMAL situation in an alarm installation.

IOW, it's a question of how you define "normally".

Reed switches are open in the absence of a magnetic field, and closed when
one is present.

For a relay, you would call such contacts "normally open".

But for a burglar alarm, the "normal" situation is for the magnetic field
to be present, from a permanent magnet in a door or window which is
"normally" adjacent to the reed switch. In this situation, the contacts
will be held closed.

Ah, so. That makes sense.


--
Personally, I like Vista, but I probably won't use it. I like it
because it generates considerable business for me in consulting and
upgrades. As long as there is hardware and software out there that
doesn't work, I stay in business. Incidentally, my company motto is
"If this stuff worked, you wouldn't need me".

- lifted from sci.electronics.repair

 

[John G.]

Try this link.
Of course you would have to wait for Her Majesty's Mail but here is all the
info you should need.
http://www.altronics.com.au/index.asp?search=reed&area=srch&option=and&Submit=SEARCH

John G.


"Terry Pinnell" <terrypinDELETE@THESEdial.pipex.com> wrote in message
news:f0sqo4t0i8ge32jhqe7db98acs2476qj6i@4ax.com...

Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

--
Terry, East Grinstead, UK

 

[Ross Herbert]

On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl <nobody@but.us.chickens>
wrote:

:On 2/7/2009 3:32 AM Terry Pinnell spake thus:
:
:> Can anyone point me towards a UK source (phone or online) for an
:> inexpensive cylindrical, enclosed reed switch, N/C, for use in a
:> burglar alarm circuit please.
:>
:> I'm still googling but so far without success and want to place an
:> order for delivery Monday.
:
:Sorry, I can't help, being in the US where things like this are
:trivially easy to get.

Have you been wondering why the OP has not bothered to respond to any of the
responses?

I would bet my last cent that he is a troll and many have been drawn to the
apparently innocent "come in sucker" question. Nobody is so dumb that he doesn't
know that such devices are readily available from any number of electronics
parts outlets. They are just as trivially easy to get in the UK as in the US.
For example, Maplin is well known to all electronics hobbyists...
http://www.maplin.co.uk/Module.aspx?ModuleNo=3082&TabID=1&C=SEO&U=StaticFamilyPages&doy=search&MenuName=Surface%20Reed%20Switch
and many others carry similar items.


:
:Just one thing: did someone here say that switches like this were
:typically N/O rather than N/C? And that such could be used for an alarm
:circuit?
:
:Think about it: if you have a N/O switch as an alarm sensor, all the bad
:guy has to do to get in is to cut it out of the circuit. There's a
:reason alarm switches are normally closed.
:
:Hard to believe a N/C reed switch wouldn't be easy to buy somewhere in
:England.

 

[Trevor Wilson]

"Terry Pinnell" <terrypinDELETE@THESEdial.pipex.com> wrote in message
news:f0sqo4t0i8ge32jhqe7db98acs2476qj6i@4ax.com...

Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

**Farnell.


--
Trevor Wilson
www.rageaudio.com.au

 

[David Nebenzahl]

On 2/9/2009 12:59 AM Ross Herbert spake thus:

Have you been wondering why the OP has not bothered to respond to any
of the responses?

Busy? Distracted? Forgot about it?

I would bet my last cent that he is a troll and many have been drawn
to the apparently innocent "come in sucker" question. Nobody is so
dumb that he doesn't know that such devices are readily available
from any number of electronics parts outlets. They are just as
trivially easy to get in the UK as in the US.

Pretty polite and straightforward for a troll, if you ask me.

And maybe not dumb but ignorant instead. (One reason people ask
questions in the first place.)


--
Personally, I like Vista, but I probably won't use it. I like it
because it generates considerable business for me in consulting and
upgrades. As long as there is hardware and software out there that
doesn't work, I stay in business. Incidentally, my company motto is
"If this stuff worked, you wouldn't need me".

- lifted from sci.electronics.repair

 

[John Fields]

On Mon, 09 Feb 2009 08:59:21 GMT, Ross Herbert <rherber1@bigpond.net.au>
wrote:

On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl <nobody@but.us.chickens
wrote:

:On 2/7/2009 3:32 AM Terry Pinnell spake thus:
:
:> Can anyone point me towards a UK source (phone or online) for an
:> inexpensive cylindrical, enclosed reed switch, N/C, for use in a
:> burglar alarm circuit please.
:
:> I'm still googling but so far without success and want to place an
:> order for delivery Monday.
:
:Sorry, I can't help, being in the US where things like this are
:trivially easy to get.

Have you been wondering why the OP has not bothered to respond to any of the
responses?

I would bet my last cent that he is a troll and many have been drawn to the
apparently innocent "come in sucker" question.

---
And you'd lose.

Terry hasn't been around for a while, but when he was a regular his
posts were always interesting and his demeanor always polite.
---

Nobody is so dumb that he doesn't
know that such devices are readily available from any number of electronics
parts outlets.

---
It's not so much about being dumb as it is about not knowing something
and asking for help.
---

They are just as trivially easy to get in the UK as in the US.
For example, Maplin is well known to all electronics hobbyists...
http://www.maplin.co.uk/Module.aspx?ModuleNo=3082&TabID=1&C=SEO&U=StaticFamilyPages&doy=search&MenuName=Surface%20Reed%20Switch
and many others carry similar items.

---
So, instead of just posting the link, (which would have been helpful)
you accompany it with a slap, which does nothing but start trouble.

Fuck you.

JF

 

[Ross Herbert]

On Mon, 09 Feb 2009 14:44:52 -0600, John Fields <jfields@austininstruments.com>
wrote:

:On Mon, 09 Feb 2009 08:59:21 GMT, Ross Herbert <rherber1@bigpond.net.au>
:wrote:
:
:>On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl <nobody@but.us.chickens>
:>wrote:
:>
:>:On 2/7/2009 3:32 AM Terry Pinnell spake thus:
:>:
:>:> Can anyone point me towards a UK source (phone or online) for an
:>:> inexpensive cylindrical, enclosed reed switch, N/C, for use in a
:>:> burglar alarm circuit please.
:>:>
:>:> I'm still googling but so far without success and want to place an
:>:> order for delivery Monday.
:>:
:>:Sorry, I can't help, being in the US where things like this are
:>:trivially easy to get.
:>
:>Have you been wondering why the OP has not bothered to respond to any of the
:>responses?
:>
:>I would bet my last cent that he is a troll and many have been drawn to the
:>apparently innocent "come in sucker" question.
:
:---
:And you'd lose.

I'm not so sure about that. While there are many replies from others there is
not one which points to a supply source. So where is there a response from him
to indicate he requires further clarification or assistance? To request help and
then not respond is just plain rude in my book. Even something letting people
know he was interested in their answers would be nice.

:
:Terry hasn't been around for a while, but when he was a regular his
osts were always interesting and his demeanor always polite.

Unlike yourself as we can see from your final epithet in this response of yours.

:---
:
:> Nobody is so dumb that he doesn't
:>know that such devices are readily available from any number of electronics
:>parts outlets.
:
:---
:It's not so much about being dumb as it is about not knowing something
:and asking for help.

The term "dumb" was meant to convey "ignorance". And ignorance in this case as
to how to find the part he was looking for. He states in his request that he
knows the part is used in burglar alarms and that it is a reed switch which can
be operated by a magnet. Now anybody with a modicum of intelligence in using
Google can combine 2 of these facts into a search term. For example;
burglar+alarm+reed+switch. And if he was aware of Google's ability to search
within a locale he would add uk at the end to get results for his country. To be
completely correct for a locale search the term would be site:.uk

:---
:
:>They are just as trivially easy to get in the UK as in the US.
:>For example, Maplin is well known to all electronics hobbyists...
:>http://www.maplin.co.uk/Module.aspx?ModuleNo=3082&TabID=1&C=SEO&U=StaticFamilyPages&doy=search&MenuName=Surface%20Reed%20Switch
:>and many others carry similar items.
:
:---
:So, instead of just posting the link, (which would have been helpful)
:you accompany it with a slap, which does nothing but start trouble.
:
:Fuck you.
:
:JF

John, you have just compounded the situation with your gratuitous and uncalled
for FU compliment.

I was not intending to deliver a slap along with the helpful link, but simply to
prompt the OP to respond in some manner. You took that responsibility for
yourself instead of letting him do so.

If the OP has been following the thread which he started in the hope of getting
help (why would he have posted if not to follow and read answers?) then why has
he not responded with some sort of indication that he requires further
clarification or that he welcomes the suggestions? That is tantamount to
"trolling" in my opinion.

 

[sirkituk]

On Feb 7, 11:32 am, Terry Pinnell <terrypinDEL...@THESEdial.pipex.com>
wrote:

Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

--
Terry, East Grinstead, UK

If you are still having problems contact me.
regards
Ed

 

[Terry Pinnell]

Nobody <nobody@nowhere.com> wrote:

On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl wrote:

Just one thing: did someone here say that switches like this were
typically N/O rather than N/C? And that such could be used for an alarm
circuit?

Think about it: if you have a N/O switch as an alarm sensor, all the bad
guy has to do to get in is to cut it out of the circuit. There's a
reason alarm switches are normally closed.

Phil Allison said:

** It's a better than even money bet Terry wants the switch to be closed
with a magnet nearby.

Which IS the NORMAL situation in an alarm installation.

IOW, it's a question of how you define "normally".

Reed switches are open in the absence of a magnetic field, and closed when
one is present.

For a relay, you would call such contacts "normally open".

But for a burglar alarm, the "normal" situation is for the magnetic field
to be present, from a permanent magnet in a door or window which is
"normally" adjacent to the reed switch. In this situation, the contacts
will be held closed.

Thanks for the responses and my apologies for not responding sooner.

Yes, as many have pointed out, I was mistaken about the N/C
requirement. It was indeed the ambiguity over the meaning of 'normally
open' that caused my mistake. I'd forgotten that the accompanying
magnet normally(!) kept it closed. IOW I was regarding 'normality' as
the state when my doors are closed, not when the potential burglar was
gaining access ;-)

I did realise my mistake soon after posting and duly ordered a few
from Rapid Electronics
http://www.rapidonline.com/Electronic-Components/Sensors/Proximity-Magnetic/Proximity-switch/65354/kw/78-0797


--
Terry, East Grinstead, UK

 

[John Fields]

On Tue, 10 Feb 2009 05:58:52 GMT, Ross Herbert <rherber1@bigpond.net.au>
wrote:

On Mon, 09 Feb 2009 14:44:52 -0600, John Fields <jfields@austininstruments.com
wrote:

:On Mon, 09 Feb 2009 08:59:21 GMT, Ross Herbert <rherber1@bigpond.net.au
:wrote:
:
:>On Sun, 08 Feb 2009 20:01:18 -0800, David Nebenzahl <nobody@but.us.chickens
:>wrote:
:
:>:On 2/7/2009 3:32 AM Terry Pinnell spake thus:
:>:
:>:> Can anyone point me towards a UK source (phone or online) for an
:>:> inexpensive cylindrical, enclosed reed switch, N/C, for use in a
:>:> burglar alarm circuit please.
:>:
:>:> I'm still googling but so far without success and want to place an
:>:> order for delivery Monday.
:>:
:>:Sorry, I can't help, being in the US where things like this are
:>:trivially easy to get.
:
:>Have you been wondering why the OP has not bothered to respond to any of the
:>responses?
:
:>I would bet my last cent that he is a troll and many have been drawn to the
:>apparently innocent "come in sucker" question.
:
:---
:And you'd lose.
:---

I'm not so sure about that. While there are many replies from others there is
not one which points to a supply source.

---
???

There are several.
---

So where is there a response from him
to indicate he requires further clarification or assistance?

news:dar2p4tiei2f885md3apbmo847gfshf52l@4ax.com

To request help and
then not respond is just plain rude in my book. Even something letting people
know he was interested in their answers would be nice.

---
So now you're setting yourself up as the arbiter of what a proper time
for response is?
---

:Terry hasn't been around for a while, but when he was a regular his
osts were always interesting and his demeanor always polite.

Unlike yourself as we can see from your final epithet in this response of yours.

---
I'm seldom polite when I'm dealing with assholes, but we're not talking
about me, we're talking about whether Terry's a troll or not, and you,
with your formidable 21 post history in this group have taken it upon
yourself to start unwarranted namecalling? As I said before, fuck you.
---

:> Nobody is so dumb that he doesn't
:>know that such devices are readily available from any number of electronics
:>parts outlets.
:
:---
:It's not so much about being dumb as it is about not knowing something
:and asking for help.

The term "dumb" was meant to convey "ignorance".

---
You're a liar. It was intended to be an insult.
---

And ignorance in this case as
to how to find the part he was looking for. He states in his request that he
knows the part is used in burglar alarms and that it is a reed switch which can
be operated by a magnet. Now anybody with a modicum of intelligence in using
Google can combine 2 of these facts into a search term. For example;
burglar+alarm+reed+switch. And if he was aware of Google's ability to search
within a locale he would add uk at the end to get results for his country. To be
completely correct for a locale search the term would be site:.uk

---
What you're missing is that he was Googling for magnetically unbiased
_normally closed_ reed switches,(which are as rare as hen's teeth) and
that he was apprised of that and what to search for.
---

:>They are just as trivially easy to get in the UK as in the US.
:>For example, Maplin is well known to all electronics hobbyists...
:>http://www.maplin.co.uk/Module.aspx?ModuleNo=3082&TabID=1&C=SEO&U=StaticFamilyPages&doy=search&MenuName=Surface%20Reed%20Switch
:>and many others carry similar items.
:
:---
:So, instead of just posting the link, (which would have been helpful)
:you accompany it with a slap, which does nothing but start trouble.
:
:Fuck you.
:
:JF

John, you have just compounded the situation with your gratuitous and uncalled
for FU compliment.

---
IMO, it wasn't gratuitous, it was well deserved.
---

I was not intending to deliver a slap along with the helpful link, but simply to
prompt the OP to respond in some manner. You took that responsibility for
yourself instead of letting him do so.

---
No, I decided to insult you because of the heavy-handed way you decided
to treat someone you knew nothing about.
---

If the OP has been following the thread which he started in the hope of getting
help (why would he have posted if not to follow and read answers?) then why has
he not responded with some sort of indication that he requires further
clarification or that he welcomes the suggestions?

---
Perhaps because he'd been unable to?
---

That is tantamount to "trolling" in my opinion.

---
You've got a lot to learn, newbie.

JF

 

[Terry Pinnell]

sirkituk <sirkituk@yahoo.co.uk> wrote:

On Feb 7, 11:32 am, Terry Pinnell <terrypinDEL...@THESEdial.pipex.com
wrote:
Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

--
Terry, East Grinstead, UK

If you are still having problems contact me.
regards
Ed

Thanks Ed, sorted thanks. (See my post of a few hours ago.)

--
Terry, East Grinstead, UK