How does a momentary switch work?
How Does a Momentary Switch Work? Switches change an electrical circuit by making or breaking a contact. Usually, the switch makes a change that stays in effect until the switch is used again. For example, a light switch turns the lights on (or off) and they stay on (or off) until the switch is used again.
The momentary push-button switch is a type of biased switch. The most common type is a "push-to-make" (or normally-open or NO) switch, which makes contact when the button is pressed and breaks when the button is released.
- A type of switch usually in the form of a push button that is only engaged while it is being depressed, as opposed to a typical “on/off” switch, which latches in its set position. Momentary switches may be normally open or normally closed. A normally open switch doesn't make contact until and unless it is held down.
- The power switch is a rocker switch and it has two symbols on the face: “O” and “—“. They are the International symbols for power “On” and power “Off”. “O” means the power is OFF and “–“means the power is ON. To turn the power washer ON, press the “—“down on the power switch.
- Normally Open/Closed. When a momentary switch is not actuated, it's in a “normal” state. Depending on how the button is constructed, its normal state can be either an open circuit or a short circuit. When a button is open until actuated, it's said to be normally open (abbreviated NO).
3 Answers. I've always assumed the opposite of "momentary" was "toggle". The wikipedia entry appears to confirm this: The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits.
- A push-button (also spelled pushbutton) or simply button is a simple switch mechanism for controlling some aspect of a machine or a process. Buttons are typically made out of hard material, usually plastic or metal.
- A latching switch is a switch that maintains its state after being activated. A push-to-make, push-to-break switch would therefore be a latching switch - each time you actuate it, whichever state the switch is left in will persist until the switch is actuated again.
- The basic function that any switch is supposed to perform is to receive information from any source connected to it and dispatch that information to the appropriate destination only. This thing differentiates switches from hubs. Hub gets the information and forwards that to every other device in the network.
Updated: 12th November 2019