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Patient Monitor Application

System View | Block Diagram
Protection Area  
  1. Electrode Protection
  2. Battery Protection
  3. Battery Connection Protection
  4. Button/Keypad Protection
  5. AC Power Port Protection
  6. LCD Monitor Controller Protection
  7. USB Port Protection
Patient Monitor

LCD (Liquid Crystal Display) Monitor Controller Protection

Problem: Short-circuit overload

Misconnections and mishandling either during assembly or during use of a wake-up port can cause large overloads and short-circuits to the system. In addition, component failures on the board can destroy the entire board.

 

Solution: PolySwitch devices.

Isolating critical circuits with separate PolySwitch devices helps prevent expensive components from being damaged. PolySwitch devices help limit the flow of dangerously high currents during fault conditions and reset back to normal operating mode once the fault condition is removed.

 

Read more about the Raychem Surface-mount (SMD) PolySwitch device

Applicable Product Series: microSMD, miniSMD.
Download SMD Datasheet - (pdf 439KB)
Agency Recognition: UL E74889, TÜV R9872049, R9872048, R2172061, CSA 078165_C_000.

 

Read more about the Raychem Radial-leaded (R-line) PolySwitch device

Applicable Product Series: RUEF, RXEF.
Download R-line Datasheet - (pdf 707KB)
Agency Recognition: UL E74889, CSA 078165_C_000, TÜV.

 

Circuit Diagram / Schematic

 

Application Notes:

LCD Monitor Controller/Inverter (pdf 37KB)

Related Technical Information:
Fundamentals of PolySwitch Overcurrent and Overtemperature Devices - (pdf 169KB)
Selection Guide for PolySwitch Devices and Technology Summary - (pdf 1,550KB)

 

Competitor Cross-reference

AC Power LineUSB 2.0 PortLCD Monitor Controller Buttons Battery ConnectionBatteryElectrodesElectrodes ButtonsLCD Monitor Controller USB 2.0 Port AC Power LineBattery Battery Connection