报价合理的-Contactor connected to DC-价格行情

On the marketContactor connected to DCThere are various forms, styles, and techniques. Based on your application, only one type of relay may be suitable. In other cases, multiple types of relays may be suitable. By understanding the advantages and disadvantages of different relays, you should be able to choose the relay for your current job.

Although many conclusions in this document apply to all contactor to DC applications, it specifically discusses the factors to consider when using different types of relays on switch modules for automatic test equipment (ATE) applications. The comparison made here is between relays with similar voltage, current, and power ratings, whose form factors can be found in typical switch modules.

The common types of relays used in ATE applications are:

Electromechanical relay

Dry spring relay

Solid state relay

Field-effect transistor switch

There are two types of electromechanical relays: latch type and non latch type. Non self locking relays require continuous current to flow through the coil to maintain relay operation.

接触器接直流It may be a widely used relay in ATE applications today. They are composed of coils, armature mechanisms, and electrical contacts. After the coil is energized, the induced magnetic field will move the armature, thereby opening or closing the contacts.The mechanical structure of electromechanical relays has great flexibility in switching ability, but they have an important limitation: speed. Compared to other relays, electromechanical relays are relatively slow devices - typical models can switch and stabilize within 5 to 15 milliseconds. For some applications, this operation speed may be too slow.

The contacts of contactors connected to DC are often larger and more robust than some other relay types. Larger contacts enable them to withstand unexpected surge currents caused by parasitic capacitance present in circuits, cables, etc. Unfortunately, larger contacts require larger packaging sizes, so they cannot be densely placed on the switch module.

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