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NIPXI-2533 Datasheet(PDF) 2 Page - National Instruments Corporation |
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NIPXI-2533 Datasheet(HTML) 2 Page - National Instruments Corporation |
2 / 4 page Solid-State Relays A solid-state relay (SSR) is constructed using a photo-sensitive metal- oxide semiconductor field-effect transistor (MOSFET) that is controlled using a light emitting diode (LED). Light from the encapsulated LED actuates the photo-sensitive MOSFET and allows current to flow through it. LED actuation provides a galvanic isolation barrier (no charge can flow) between the control circuitry and the MOSFET. This is analogous to the isolation barrier formed between the magnetic coil and the mechanical armature in electromechanical relays. There are two main advantages to using SSR technology in PXI: extended lifetime and unlimited simultaneous crosspoint connections. Because SSRs use solid-state devices (MOSFETS) to switch states instead of mechanical contacts, they have infinite mechanical lifetime. PXI switch modules that are based on SSR technology last longer and help reduce overhead in many applications by eliminating the need for frequent switching component replacement. Compared to electromechanical relays, SSRs require very little power to transition between ON and OFF states.This feature is especially useful when building PXI switch systems. The PXI backplane supplies limited power to each slot in the chassis. Most high-density electromechanical relay-based matrix modules require more power than that available from the backplane to close all crosspoints simultaneously. SSR-based matrix modules are not limited in the same way due to the low power consumption of SSR technology. The PXI-2533 and PXI-2534 256-crosspoint matrix modules are high-density switch products that incorporate SSR technology. Both modules offer unlimited mechanical lifetime and unlimited simultaneous crosspoint connections while providing the ability to switch up to 55 V at 1 A on all channels. Topology Diagrams 256-Crosspoint SSR Matrix Modules BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.) LED MOSFET Control Circuitry Mixed Case Isolation Barrier High Voltage Load Figure 1. Solid-State Relay Construction R0 C0 C1 C2 C3 C63 R1 R2 R3 R2 Diagram 1. PXI-2533 4x64 1-Wire R6 R0 R1 R6 R7 C0 C1 C2 C3 C31 Diagram 2. PXI-2534 8x32 1-Wire |
Similar Part No. - NIPXI-2533 |
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Similar Description - NIPXI-2533 |
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