Multi-stage rotation speed control device for fan motor

Multi-stage rotation speed control device for fan motor

The utility model discloses a multi-stage rotation speed control device for a fan motor, which comprises a drive element, a motor rotation speed sensing element, a resistance circuit, a divider resistor and a multi-stage switch, wherein the controlled terminal of the drive element is connected with...

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1. Verfasser: HU FENGQUAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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creator HU FENGQUAN
description The utility model discloses a multi-stage rotation speed control device for a fan motor, which comprises a drive element, a motor rotation speed sensing element, a resistance circuit, a divider resistor and a multi-stage switch, wherein the controlled terminal of the drive element is connected with the multi-stage switch, the output terminal of the drive element is connected with a fan motor, the detection terminal of the drive element is connected with the motor rotation speed sensing element; the resistance circuit comprises a plurality of resistance elements with different resistance values; the multi-stage switch is connected with the resistance circuit, the divider resistor, the controlled terminal of the drive element and a voltage source, wherein the multi-stage switch can selectively switch on any resistance element to the voltage source and establish an input voltage on any resistance element by dividing voltage. The drive element can drive the fan motor to rotate at specific corresponding speed acco
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language chi ; eng
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subjects CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
title Multi-stage rotation speed control device for fan motor
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