![]() This photo is taken from the opposite side of the switch compared to the photo above. It's a variation on the mechanism used in standard toggle switches. This is the snap-action mechanism that ensures that there is sufficient pressure between the contacts. The ones used as limit switches often have very long, flexible levers (sometimes in the form of a stiff wire) so that the switch isn't damaged if the mechanism goes a bit beyond the desired limit. Some have been used in the mice used with computers (without the lever). The following switch has a lever actuator. This diagram is a cut away view of a normally open pushbutton switch. This one has solder tabs on the body of the switch that allow it to be soldered into the board. This is a switch like the one in the previous image. The position of the slider determines which 2 terminals are connected. The sliding contact connects 2 of the 3 terminals for each half of the switch. The switch below is a double pole double throw (DPDT) slider switch. Generally, switches this size are rated for no more than 3 amps. This small switch has an exceptional current capacity. You can see that the basic specifications are stamped into the body of the switch. This is an example of a single pole double throw toggle switch. It's not quite as simple as Ruffle but anyone even moderately familiar with the Windows Control Panel and installation of software can use Flash as it was intended.Ĭlick HERE to make this applet fill this window. More information on Flash capable browsers can be found HERE. When you click the right button, current can flow between terminals A and B.Īn alternative to Ruffle for viewing Flash content is to use an alternative browser like the older, portable version of Chrome (chromium), an older version of Safari for Windows or one of several other browsers. When you click the left button, current can flow between terminals B and C. Clicking on the buttons will change the position of the switch to allow you to see how the internal components work. ![]() In the 'off' position, the movable internal contacts are not connected to either of the outer (left/right) contacts. This switch has a third position that allows you to have no electrical connection between any of the terminals. Both result in a circuit being completed inside the switch. Many single pole double throw toggle switches have only two positions. This is not the internal structure of any real switch, but it's a close approximation of the way many of the toggle switches function. The diagram below shows some of the internal components of a SPDT toggle switch. The number of 'throws' indicates the number of positions that will result in an electrical connection. ![]() The number of 'poles' indicates how many completely independent circuits are controlled by the switch. For now, we will only discuss a simple single pole double throw switch (SPDT). ![]() They are available in a number of configurations. A switch is an electromechanical device that's used to open or close an electrical circuit. ![]()
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