Manufacturer
Honeywell
Part number
SS421H
Country
USA
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The SS421 Series Adjustable Hall-effect Under-speed Detectors are designed to monitor fan or motor performance. This temperature-compensated, Hall-effect IC contains a timing circuit and logic, that senses magnetic input frequency. The internal circuitry contains a timer so that one or two pulses at a slower repetition rate than the set point do not produce an unwanted output.
Features:
Wide Temperature Ranges for Design Flexibility
Temperature Compensated for Consistent Operation with Low-Cost Magnets
Bipolar Operation for Easy RPM Counting Using Ring Magnets
Built-In Timing Circuit Greatly Simplifies and Reduces the Cost of PC Board Design
Speed Trip Point Adjustable with External Resistor and Capacitor
