Products
Hall Effect
The basic Hall element relies on a magnetic field in order to sense motion. The principle is based on the Hall effect, discovered more than 100 years ago by Edwin Herbert Hall. This effect is the small electrical potential created when a stationary magnetic field is placed perpendicular to a current-carrying conductor.
Some of the advantages of the OPTEK Hall Effect device are:
- Analog and Hallogic® output
devices - Analog output devices utilize an open collector
NPN Transistor. Hallogic® combines a standard magnetic sensor
with a logical (high, low sate) output device.
- Bandgap Voltage Regulator - In addition to maintaining a constant output voltage level, the Hallogic bandgap voltage regulator serves as temperature compensated voltage source to bias the Hall cell with the supply voltage ranging from 4.5 to 24.0 volts DC.
- Threshold Amplifier – The amplifier/detector circuit is a constant-gain configuration, designed with temperature-compensated trip points at the input to the voltage comparator. The Schmitt trigger output then drives an open-collector transistor with a 30mA current sinking capability. This open-collector transistor enables the device output to drive up to 10 TTL loads directly.
- Low Power Consumption – No bias current is required by the permanent magnet. The sensor itself draws typically 5mA of supply current.
- Designed for the toughest environments – The Hall Effect Sensor is virtually immune to environmental contaminants. It’s rugged and suitable for use under severe conditions. These devices are excellent choice for DC motors, automotive applications, robotic and heavy machinery sensing applications, or for any application in a harsh environment where optoelectronic devices are suitable.
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