How Do Push Button Switches Work in an Electrical Circuit?
Electrical circuits need to be complete to work. The electricity must be able to flow uninterrupted through the various wires and components. But circuits that are complete all the time aren’t as useful as ones that work only when we want them to. This is what a switch does. Some switches are hidden inside machinery; others are where we can see and use them. The push button switch has thousands of familiar uses, from elevators to car stereos. It comes in two basic kinds: momentary and non-momentary. Construction A push button switch is a small, sealed mechanism that completes an electric circuit when you press on it. When it’s on, a small metal spring inside makes contact with two wires, allowing electricity to flow. When it’s off, the spring retracts, contact is interrupted, and current won’t flow. The body of the switch is made of non-conducting plastic. Momentary Contact jQuery(document).ready(function(){ jQuery(‘#jsArticleStep1 span.image a:first’).attr(‘href’,’http://i.ehow.com/im
