4/15/2023 0 Comments Momentary switch diptrace![]() ![]() It would have zero rise time and fall time during state changes, and would change state without "bouncing" between on and off positions. Some switches are used to isolate electric power from a system, providing a visible point of isolation that can be padlocked if necessary to prevent accidental operation of a machine during maintenance, or to prevent electric shock.Īn ideal switch would have no voltage drop when closed, and would have no limits on voltage or current rating. Large switches may be remotely operated by a motor drive mechanism. A switch that is operated by another electrical circuit is called a relay. For example, a thermostat is a temperature-operated switch used to control a heating process. Switches may be operated by process variables such as pressure, temperature, flow, current, voltage, and force, acting as sensors in a process and used to automatically control a system. Automatically operated switches can be used to control the motions of machines, for example, to indicate that a garage door has reached its full open position or that a machine tool is in a position to accept another workpiece. The mechanism actuating the transition between these two states (open or closed) can be either a " toggle" (flip switch for continuous "on" or "off") or " momentary" (push-for "on" or push-for "off") type.Ī switch may be directly manipulated by a human as a control signal to a system, such as a computer keyboard button, or to control power flow in a circuit, such as a light switch. Each set of contacts can be in one of two states: either "closed" meaning the contacts are touching and electricity can flow between them, or "open", meaning the contacts are separated and the switch is nonconducting. 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.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |