The Hall switch can use AH402F and has a built-in 10K Ω pull-up resistor
Time:2023-12-15
Views:1213
The bipolar Hall element plays a role in controlling water flow in water dispensers. AH402F is a high-voltage bipolar Hall switch chip that uses a high-voltage bipolar process. The chip is composed of a voltage stabilizing unit, a Hall voltage generator, a differential amplification circuit, a temperature compensation circuit, and an open collector output circuit. The working voltage of the AH402F Hall element is in the range of 3.0V~60V, with a latch function and built-in pull-up resistance. It has high sensitivity and good consistency and stability.
AH402F-TO92S.jpg
The principle of bipolar Hall element detecting water flow rate is that when water flows through the rotor assembly, the magnetic rotor rotates and outputs a pulse signal, and the speed changes linearly with the flow rate. The Hall element outputs the corresponding pulse signal to feedback to the controller, determining the magnitude and presence of water flow rate. Adjust the current of the proportional valve to control the switch of water flow through the proportional valve.
AH402F Function Block Diagram. png
AH402F has the ability to withstand high voltage shocks and has extremely strong noise resistance; Suitable for various fields such as electronic consumption, automotive, and industrial control. Provide two packaging forms, TO92S and SOT23-3L, both of which comply with RoHS standards. The chip features are introduced as follows:
Working voltage: 3.0V~60V
Overvoltage protection capability: 80V
ESD performance: 4 kV
Open collector output
Power pin reverse voltage protection
• Maximum driving current of 30mA
Output built-in 10KQ pull-up resistor
Working temperature range: -40 ° C~150 ° C
AH402F-TO92S.jpg
The principle of bipolar Hall element detecting water flow rate is that when water flows through the rotor assembly, the magnetic rotor rotates and outputs a pulse signal, and the speed changes linearly with the flow rate. The Hall element outputs the corresponding pulse signal to feedback to the controller, determining the magnitude and presence of water flow rate. Adjust the current of the proportional valve to control the switch of water flow through the proportional valve.
AH402F Function Block Diagram. png
AH402F has the ability to withstand high voltage shocks and has extremely strong noise resistance; Suitable for various fields such as electronic consumption, automotive, and industrial control. Provide two packaging forms, TO92S and SOT23-3L, both of which comply with RoHS standards. The chip features are introduced as follows:
Working voltage: 3.0V~60V
Overvoltage protection capability: 80V
ESD performance: 4 kV
Open collector output
Power pin reverse voltage protection
• Maximum driving current of 30mA
Output built-in 10KQ pull-up resistor
Working temperature range: -40 ° C~150 ° C
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