aber warum nen bipolaren?
da brauchste doch nen 2. magneten (umgedreht) zum aus/einschalten.
zum testen hab ich gerade die hier:
A3144E Hall sensor element 44E OH44E principle of Hall effect switch IC, the use of magnetic semiconductor integrated circuit manufacturing technology, which is determined by the voltage regulator, Hall-voltage generator, differential amplifier, Schmitt trigger , temperature compensation circuit and open-collector output stage consisting of magnetic sensing circuit, Works with input magnetic induction and the output is a digital voltage signal.
Product Features:
small size, high sensitivity, fast response and good temperature performance, high accuracy, high reliability.
Typical Applications:
Non-contact switch, auto ignition, brake circuit, position, speed detection and control, security alarm devices, textiles control systems etc.
Limit parameter @( 25°C):
Power supply voltage VCC 4 to 24V
Output reverse breakdown voltage Vce = 50V
Output low current IOL = 50mA
Ambient temperature TA = E profile : -20 ~ 85°C , L profile : -40 ~ 150°C
Storage temperature range TS = -65 ~ 150 °C
Dimension:
Wiring Diagram:
Details:
A3144 Series Unipolar Hall-effect integrated temperature sensor is a magnetic sensor circuit from the power supply, Hall-voltage generator, differential amplifier, Schmitt trigger, and an output amplifier, the input of the magnetic flux density, The output is a digital voltage signal. It is a single-pole magnetic circuit for rectangular or cylindrical magnets work. Can be used in automotive and military projects. It's packaged in a TO-92SP Typical applications: brushless DC fan / speed detection / non-contact switch / auto ignition / position control / isolation detection / safety alarm device. 3144E high-temperature Hall opened off the integrated circuit is a Hall-effect principle, the use of semiconductor technology to produce magnetic body temperature integrated circuit, which is composed of a voltage regulator, Hall-voltage generator, differential amplifier, Schmitt trigger, a temperature compensation circuit and an open-collector output stage consisting of magnetic sensor circuit, the magnetic signal is input, the output is a digital voltage signal.