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RosemontCrest
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Simplest electromechanical relay circuit
I wish for you a very merry Christmas and prosperous new year.
Don't worry about Bloggs. I'm sure Obama will have a COLA for welfare
recipients this year and perhaps a couple of new programs.
Drop dead.
You should talk, you're nothing but a low life Defense sector ripoff and workfare parasite.
On Tue, 24 Dec 2013 10:25:57 -0800 (PST),
I don't work in the defense industry but don't let the facts get in
the way of your lies. You lefties never do.
You lefties are so fond of lies, you're incapable of anything else.
I don't work in the defense industry but don't let the facts get in
the way of your lies. You lefties never do.
On Tue, 24 Dec 2013 10:24:02 -0800 (PST),
That wouldn't even make you happy, Bloggs. You lefties are incapable
of happiness (or telling the truth).
That wouldn't even make you happy, Bloggs. You lefties are incapable
of happiness (or telling the truth).
M
Maynard A. Philbrook Jr.
" No one refers to relay contacts as "power switch." Power switch means
that gizmoid with ON/OFF labels that you work manually. Looks like it's
remedial reading time for you.Bloggs, I think you should stay out of this one..
In the industry, a contact/contactor is a power switch. They
switch a variety of sources to loads.. Manual has nothing to do
with it.
Better have a drink and think about it before you reply. Better yet,
have two or more!
Jamie
Oh, hell no! Morons like Bloggs make *mean* drunks.
D
Don Y
Hi Jim,
When I was a kid, they'd routinely offer tours of the local nuke
to educate us on the "promise" of nuclear energy.
At Charles Stark Raving, it was commonplace to wander into the
"security office" after hours.
~25+ years ago, they gave tours *inside* Cheyenne Mountain Complex.
Pretty cool -- even though they don't show you any of the "good
stuff". (the springs were really cool, though -- and, of course,
the blast door! insane to see what you can do with infinite money!)
At the time, we had to preregister weeks in advance, provide a SSN,
etc. before being allowed in the mountain. Now, I think, the tours
are no longer offered. Glad to have had that opportunity!
Happy Holidays!
When I was a kid, they'd routinely offer tours of the local nuke
to educate us on the "promise" of nuclear energy.
At Charles Stark Raving, it was commonplace to wander into the
"security office" after hours.
~25+ years ago, they gave tours *inside* Cheyenne Mountain Complex.
Pretty cool -- even though they don't show you any of the "good
stuff". (the springs were really cool, though -- and, of course,
the blast door! insane to see what you can do with infinite money!)
At the time, we had to preregister weeks in advance, provide a SSN,
etc. before being allowed in the mountain. Now, I think, the tours
are no longer offered. Glad to have had that opportunity!
Happy Holidays!
J
John S
You lost me.
You might want to re-think your feelings.I earned an electronics
merit badge in Boy Scouts over fourty-five years ago. I started
designing my own electronic circuits in junior high school. I started
taking EE classes after high school and my first job was with a
company that manufactured electronic medical devices (brain scanners).
Now, don't you feel silly? (You ought to even if you don't.)
The only reason I'm troubling myself to school you is that you offered
up a good suggestion in another followup. You more or less said told me
to look at the datasheet. Excellent advice!
Too bad that this datasheet lacks an example circuit, ergo my post.
http://datasheet.octopart.com/RP710024-Tyco-Electronics-datasheet-12624042.pdf
Hi, Don -
Nice relay. The data sheet tells everything you need to know. If you
look at the Coil Operating Range DC graph, you will see that it is
capable of operation up to 70C at the specified coil voltage of 24V.
It is not necessary to add a resistor to keep the coil from burning up.
A diode or snubber around the coil might be needed depending on your
push button specs or other requirements.
The simplest circuit is therefore the pushbutton and relay if you do not
need transient suppression. Otherwise a diode or snubber will need to be
added.
HTH,
John S
You're the one who made the assertion, not me, so you find it. NEC does not assume jurisdiction over relays in products external to the fixed electrical wiring.
The contactor has a completely different symbol from the power switch on the schematic. Of course a contactor is a power switch, but, and this is a tough one, a contactor is called a....wait for it...contactor, and a switch is called a switch. Sounds like you already got a headstart on me in the drinking department.
No argument there, but it as nothing to do with how you wire things up inside a standalone box or product.
M
Maynard A. Philbrook Jr.
just think about what constitutes an ACTIVE device!
Jamie
NEC is authored by NFPA, founded a little over a hundred years ago. It's fundamentally a fire prevention code. Accident prevention is achieved by grounding and that's about it.
You are certainly correct. Bloggs, as usual, doesn't know what he's
talking about.
You couldn't rewire a house lamp...then we already know you don't know how to screw a bulb in it after you get through screwing up the wiring.
On Fri, 27 Dec 2013 19:30:22 -0800 (PST),
You lefties always lie. You're incapable of anything else. You're
too stupid to use a real newsreader/server, as well. You really are
as dumb as Slowman.
You lefties always lie. You're incapable of anything else. You're
too stupid to use a real newsreader/server, as well. You really are
as dumb as Slowman.
J
Jasen Betts
yes, above unity power gain implies acive.
D
Don Kuenz
Jasen Betts said:
An entry for "active device" is missing from my _IEEE Standard
Dictionary_. _The Art of Electronics_ mentions, in passing, "The
transistor is our most important example of an 'active' component."
That's it. My textbooks also contain no definition so it seems that one
must use the Inet to find a working definition.
An active device is any type of circuit component with the
ability to electrically control electron flow (electricity
controlling electricity).
http://www.allaboutcircuits.com/vol_3/chpt_1/2.html
A relay certainly controls electron flow as much as a transistor switch.
As mentioned previously, _The Art_ says that a transistor is an active
component. Ergo, my vote on the matter is also, "Yes."
--
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\__/ Don Kuenz
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