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Re: Relay contact ratings.
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Consider that Moore's Law is not a law.

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We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

Re: Relay contact ratings.

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OK, Moore's conjecture then, if that pleases you.

The point is that we _have_ addressed the fundamental truth that
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Re: Relay contact ratings.
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You mean we have found a way to avoid having to do anything unpleasant
to ourselves by foisting the problem on a latter generation. And you
think this is a "solution"?

--
We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

Re: Relay contact ratings.

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Certainly you must have misunderstood.

In the context of Moore's Law:

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Re: Relay contact ratings.
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"Moore's Law" fails when you get to one atom sized conductors (in
practical terms we can expect it to fail before then)

"Moor's law" is about one, specific and small situation. By appealing to
"Moore's Law" as a general solution you are burying your head in the sand.

--
We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

Re: Relay contact ratings.

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http://en.wikipedia.org/wiki/File:Transistor_Count_and_Moore%27s_Law_-_2011.svg
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By admitting - ergo addressing the fact - that there _is_ a limit to
the application of Moore's Law, your .sig: "We have failed to address
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Re: Relay contact ratings.

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Kill off non-productive socialists and you're left with LOTS of space
:-)
        
                                        ...Jim Thompson
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| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Relay contact ratings.
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Yes, but you have fewer stimulating arguments.

--
We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

Re: Relay contact ratings.

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The silence would be exhilarating ;-)
        
                                        ...Jim Thompson
--
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Relay contact ratings.
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Wouldn't it get boring after a while?

--
We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

Re: Relay contact ratings.

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We'd still have Larkin to tweak under the chin, while he cluck, cluck,
clucks along ;-)
        
                                        ...Jim Thompson
--
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
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Re: Relay contact ratings.
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Interesting. Thanks.

I'm tempted to combine the timer with the thermostat, a replacement for
which I've been cursin..., er, I mean testing, today. (Sod's law
subsection 3.1 - a fridge must always enter defrost mode while a person
is attempting to adjust the upper and lower settings of a thermostat.)

Of course, I could just buy a new fridge.

Sylvia.

Re: Relay contact ratings.
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Depends on how old, and how good the current one is other than this
current problem.  New ones might be even worse :)

Re: Relay contact ratings.
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It would have to be at least ten, and it's been running all that time.

The big question, of course, is how much longer the compressor will
last, since it's probably not going to possible to source a replacement,
even if it would otherwise be economically worthwhile.

BTW, the wires are attached to the (mains-voltage) lamp socket by way of
spring clips. Seems a bit iffy to me.

Sylvia.

Re: Relay contact ratings.
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I remember a few years back there was one of these educational
programs on how things work, in particular household appliances.  They
actually went to a dump site where were were dozens of junked fridges,
and connected each one to power.  Almost all still cooled, but had
been dumped due to rust, broken shelves, seals etc or other similar
damage.  They said that the compressors were extremely reliable.

If your fridge is only 10 and hasnt gor rust or any of these problems,
odds are that it should continue working for a long time yet, and
probably is quite efficient compared to older ones.  Probably worth
fixing, especially if you can DIY.  New ones aren't cheap :(

I don't know what the climate is where you are, but we have had 2
fridges without auto defrost since the 90's and they rarely ice up.
Might defrost once a year, and isnt a big drama.  If you are opening
the freezer section a lot though (especially with single door fridges)
it might be different as that would let more humid air in, that would
condense on the cold surface and form ice.


As for that electronic aftermarket timer from Ebay that is 120v - if
you get one and open it up, you might find that it has either a
switchmode power supply or a series capacitor type supply.  You can
modify these fairly easily to run from 240v, or make up a small power
supply that you can mount in the back of the fridge.  For something
like this a linear power supply might be best, as linear ones are very
reliable.

Re: Relay contact ratings.
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OK, i am going dumper diving.

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Actually, a good source of relays are garage openers.  I have a spare
board with 3 240V/5A w 24V/5A coil.  I guess it needs open/close/on.

Re: Relay contact ratings.
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I have worked on a couple of newer Australian made ones here and now
they have no relays at all in them.  Other brands
might have, or older models that are being replaced.

Re: Relay contact ratings.
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http://australia.rs-online.com/web/p/electromechanical-relays/1279550 /
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parthttp://compare.ebay.com/like/290638915750?var=lv <yp=AllFixedPriceIt...
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A lot of the modern ones use butane as a refrigerant so may be they do
not want open contacts in the very remote case of leaks

Re: Relay contact ratings.
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I meant garage door openers :)

Re: Relay contact ratings.
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power,
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http://australia.rs-online.com/web/p/electromechanical-relays/1279550 /
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parthttp://compare.ebay.com/like/290638915750?var=lv <yp=AllFixedPriceIt...
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(12V),
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Did not see that but it may also be the case with the newer fridges.

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