what is the theory of toggle mechanism and its purpose?
482721
http://en.wikipedia.org/wiki/Toggle_Mechanism
132768
Try starting here:\nhttp://computer.howstuffworks.com/boolean.htm
662535
It is a switch that works on a preset time, it switches on after a while then off again after a certain duration of time.
602728
It means that in any software application or website, the user should be able to get to the desired function or information from the startpage in just 3 clicks of the mouse.\nThis wasn't really invented - it's a best practice.
1023798
I heard a myth that if you keep pressing 0 over and over, it will come close to blowing their circuits, and someone will pick up.  I've never tried it, but I've always wanted to, just to see if it's true.  :)
980113
Do you want to know if it is a negative or positive feedback control mechanism?  If so, it is a negative feedback control mechanism.\n\nNot sure if that is what you are looking for.
241661
a normal toggle switch?  will you be going up on it or down?  going down may be simpler with a lever.  (roll a ball down the lever to make it swing down, hitting the switch) \n\nJust a thought!  good luck!
1017664
Believe it or not:  They were designed for INEFFICIENCY!\n\nYep, that's right!  Back in "the old days," the machinery that made up the typewriters couldn't type as quickly as people could press the buttons that operated the machinery.  So they darned things would get all locked up on themselves.\n\nSo "they" redesigned the keyboards so that the most commonly-used letters would be typed by the weakest fingers, and the whole process of typing something out would be very slightly slowed-down--just enough so that the typewriter keys would stop tripping-up and/or locking-up on themselves.\n\n(I heard this in typing class way back in the Dinosaur Days, when I was in 8th grade.  I also read the same thing, elsewhere, somewhere in print, in the days before Al Gore thought up the Internet. [That last bit was a joke.])
106251
A clap switch has a transducer which converts the varying pressure in the soundwaves into a tiny electrical signal, and may look exactly like a condenser mic in a cheap tape recorder.  A microchip amplifies the audio signals and a circuit detects a pattern of noises above a certain threshold.  Clapping, or even if a dog barked in the right sequence would cause the detector to throw the switch.  The switch is known as a toggle, since the same action turns it on, then off, in a repeating pattern.
947961
Alien's answer is very good...\n\nOn same subject ... when I was a kid, I was fascinated to learn how the buzzer works. It is more or less the same principle but with mechanical and electrical 'actions' -- when you press the button you close a DC electrical circuit that activates an electromagnet that pulls a little hummer that rings a bell. As soon as the 'hummer' moves it disconnect the circuit and the magnet does not work any more. The 'hummer' goes back to its initial position b/c it has a string attached, But then it closes the circuit and everything repeats... ha-ha-ha, I still remember my first impression
297204
Ultimately to act as a switch and automatically open the circuit and to protect the circuit wiring and appliance in the event of an overload, short circuit or ground fault condition.(thermal trip heat sensor)\nLarger CBs allow an overload to occur briefly to allow motors to start up and are also fitted with an adjustable instantaneous trip unit (magnetic sensor).
189815
I don't want to re-invent the wheel, so please visit these links.\n\nClear history on yahoo search website: http://help.yahoo.com/help/us/ysearch/basics/basics-25.html\n\nClear history on Yahoo Toolbar: http://help.yahoo.com/help/us/toolbar/toolbar-10.html
115772
Yes, a double-pole switch opens and closes two wires of the same circuit, or two independent circuits.  I believe electro-fogey was thinking of double-throw switches.
16644
It used to be used to stop the scrolling of a command line (hence the name). Most programs don't use it now.\n\nhttp://en.wikipedia.org/wiki/Scroll_lock has more information.
965400
All 3 types of levers. for one.\n\n\nNext...
396113
Not sure what you are asking...but it sounds like you want to know if there are applications that will send a signal to actuate a switch?\n\nThe short answer is yes...these sorts of things happen hundreds of millions of times a day (if not more).
219408
A solenoid is an electromechanical device that will generate a limited motion when it is energized.  It consists of an electromagnet (coil of wire) and pin/bar/plate that is ferrous and can be attracted by magnetic force.  The pin is then connected to whatever device that needs to be acted upon mechanically and usually has a spring on it to return it back to its original position when the solenoid is de-energized.\n\nSolenoids are usually found controlling valves, but can be used elsewhere as well.  Perhaps the most common solenoid that you will come in contact with is those used to actuate the power door locks in a car.  That is a dual-acting solenoid in which there are two coils, one to unlock the door and another to lock the door.