Maximizing Your Relay Life Span
应用文章
Electromechanical relays can be used as actuators, as switches to route power to electrical devices, or for signal routing within a device or between different instruments. In data acquisition applications, relays are used to connect multiple transducers to a single measuring device.
Most electromechanical relays are driven electromagnetically. A magnetic flux is generated by passing current through a coil. This magnetic flux causes an armature to move, and the movement causes isolated electrical contacts to open or close, thus making or breaking electrical connections.
As with all mechanical devices, relays eventually wear out. If you use the right relays for the type of measurements you are making and derate them appropriately, you can protect your relays against early failure and prevent damage to your test instruments.