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Welcome to the CyBENCH Salvage Pages - Hall Effect Switches



QUICK INTRODUCTION

Hall effect switches are typically combined Hall elements and a switching circuit.
Quite simply, they are electronic switches operated my placing a magnet close to them.
No direct physical contact is required, just close proximity to a magnet.
They can operate at high frequency - high speed revolution counter.

Some have a binary style output - on or off, others have a linear output.
Devices with a linear output give indication of magnetic strength.
This can also be used to judge the distance from the magnet.

APPLICATIONS

These devices are used in many electronic devices.
Typical applications include:
  • Cover or Access flap sensors
  • Rotation detection - disc drive index detection
  • Replace mechanical switches - printer paper-out switches

ADVANTAGES

They offer better reliability than mechanical contact switches.
They do not suffer dirt as would an optical sensor.
They are suited to harsh environments - total enclosed.