torch? i meant good working foot/finger control.
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06-05-2009, 07:58 PM #11
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06-06-2009, 01:35 AM #12
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06-06-2009, 05:16 AM #13
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Not really. A relay is sometimes referred to as a "electro-mechanical switch" but I've never heard of a switch being referred to as a relay and I've been design and building control systems and automation equipment for about 37 years, not that I couldn't have missed something.
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06-06-2009, 06:01 AM #14
It is a micro switch and not a relay. A switch needs physical force to activate it. A relay has contacts like a switch but also a actuator such as an electrical solenoid to activate the switch and can be controlled remotely.
Now put a solenoid on your switch and you have a relay.Nick
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06-06-2009, 10:55 AM #15
Nope the electrical portion of the Releco is a relay, the mechanical test push button is a switch.
Same as a positioner table hitting an magnetic switch and reversing itself, no physical force really, just a polarity pickup, or even an electric eye picks up a discrepancy in its field of vision, or encoders that is also a switch for wave form production.
An IGBT is a ultra fast switch, as are transistors, mosfets, scrs and such, all electrical switches.
Its all the way you look at the problem to get the job done.Last edited by cruizer; 06-06-2009 at 05:59 PM.
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06-06-2009, 03:19 PM #16
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06-07-2009, 12:00 AM #17
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Nope it is a relay, that is it's main function. Some relays have a mechanical actuator, "flag", led's whatever but for all intents and purposes they are still a relay with a coil and some contacts.
IGBT's, fet's, micro's are indeed switches, they are not relays
My main point is why do you guys refer to a micro switch or a trigger switch as relays?? This is the third time I have asked the question and all I get is a question in response to a question.
Just curious as to why?
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06-07-2009, 12:03 AM #18
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06-07-2009, 06:18 AM #19
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06-07-2009, 09:52 AM #20
I come from an aircraft background, circuit diagrams don't differentiate between a micro switch and a electromecanical relay. I know what thay are on a circuit diagram and that is all that matters. We were only talking about a foot pedal, where the OP was calling this device a limit switch.
I called it a relay as 2 pins in the pedal close to tell the machine to start up.
For me its symantics, I was trying to make it simple for the guy to understand
Yes this is a mico switch even made by Mico switch


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