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When we turn on the power of the electric vehicle, the positive and negative power supply pins of the Hall element receive a 5V working power supply provided by the controller. When we rotate the throttle, the position direction of the magnet component fixed inside the handle changes, causing the magnetic field direction sensed by the linear Hall sensor to change from weak to strong. The Hall output will produce a varying voltage between 1 and 4.2V. Since this voltage is relatively low, it cannot directly drive the motor. This voltage is provided to the operational amplifier of the controller for comparison with a set value. Based on the comparison result, a voltage value is output to drive the field-effect transistor (FET). The FET is connected to the power supply, and when it conducts, it outputs voltage to drive the electric vehicle motor to rotate.
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chongqing liguang switch co., ltd
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