How can I choose the best electric relay?
Electric relays are part of a large number of technologies, from laboratory tools to cars. Choosing the best electric relay for a particular project can be daunting. They come in countless sizes, shapes and technologies. The key factors that need to be considered include the type of load, the required speed and the budget of the project. The load type will affect the preferred metal from which the contacts are bound. Contacts on the electric relay can be bound from a series of materials, while gold and tungsten are the two most common. Gold contacts work best for low voltage applications, while tungsten are preferred for high -voltage and high -stream scenarios.
The speed with which it needs to operate the electric relay is another major aspect. Different relay types provide different speed parameters. Electromechanical Relay is one of the most common relay types, but is also one of the slowest. Reed relays provide faster speed, about 10 times faster than their electromechanical brotherRanec provides. The fixed relay (SSR) is even faster and very useful for high -voltage applications.
The budget, as with any project, is a factor that needs to be taken into account. Electronic relay costs may vary dramatically depending on the cost and availability of materials. The number of relays necessary changes depending on the type of relay used and may have a dramatic effect on the expense.
Other factors that need to be considered are the required electric relay life, the required voltage or current parameters, and the number of poles of the switches that will need the relay to effectively fulfill the desired function. Lifetime is influenced by a number of factors such as the wear of the mechanical part and the damage caused by excessive voltage or currents. It is necessary to ensure that the electronic relay coil can be properly powered by a current passed by the control circuit.
SelectionThe best electric relay for the required application can be complicated. For some projects, a large amount of relays may be suitable, while other projects may only have one or two relays that correspond to all required parameters. Be sure to use all relevant measurements to ensure that the project is correctly adapted. Consider the evaluation of voltage and resistance to avoid underestimation or excessive relay drive, workload to be processed to prevent early relays, and switching speed to ensure satisfactory electronic relay power.