The pulse width modulation is called Pulse Width Modulator, referred to as PWM, because of its special performance, it is often used in DC load loops, lamp dimming or DC motor speed regulation, HW-1020 governor, is to use pulse width modulation ( The PWM governor and PWM governor made by PWM principle have been widely used in industrial DC motor speed regulation, industrial conveyor speed regulation, the Application of dc motor speed control system, lighting and lighting adjustment, computer power supply cooling, DC fan, etc.
HW-A-1020 type (DC12v24v voltage universal type) governor, working principle: the Application of dc motor speed control system, change the average current power on the load from 0-100% by changing the duty ratio of the output square wave, thus changing the load and brightness of the light/ Motor speed. The pulse width modulation (PWM) method is used to realize dimming/speed regulation, and its advantage is that the power energy of the power source can be fully utilized and the efficiency of the circuit is high.
For example, when the output is a 50% square wave, the pulse width modulation (PWM) circuit also outputs 50% of the energy, ie almost all of the energy is converted to the load. When using the common resistance step-down speed regulation, in order to make the load get 50% of the power of the power supply, the power supply must provide more than 71% of the output power, the Application of dc motor speed control system, 21% of which is consumed by the voltage drop and heat consumption of the resistor. The energy of the large cloth is consumed by the resistor, and the remaining energy is the output energy, and the conversion efficiency is very low.
In addition, the HW-A-1020 speed regulation has almost no heat consumption due to the Application of dc motor speed control system switching mode. The HW-A-1020 speed regulation has a very high torque at low speed, because the governor has automatic tracking PWM and pulse width modulation. The (PWM) mode allows the load to get almost full supply voltage during operation, the Application of dc motor speed control system which is beneficial to overcome the inherent coil resistance of the motor and cause the motor to generate a greater torque rate.
Application and wiring method of PWM DC motor governor
PWM DC motor wiring
Wiring method: HW-A-1020 governor has three terminals, the specific wiring method of the Application of dc motor speed control system, please refer to the text as follows
(1) Black wire: Connect the battery to the negative pole of the DC power supply or use the battery the Application of dc motor speed control system to iron the battery.
(2) Red line: Connect the DC power supply and the battery positive terminal when using the battery.
(3) The positive the Application of dc motor speed control system pole of the motor: connect the positive pole of the DC power supply or the positive pole of the battery when using the battery.
(4) Blue line: Connect the DC motor negative
Instructions for use: After the wiring is correct, the power is adjusted clockwise to adjust the knob. At this time, the Application of dc motor speed control system you can hear or feel the sound inside the speed switch. It is proved that the internal switch has been opened. As the angle of the knob increases, the motor speed is continuously increased. The acceleration of the motor also reaches the highest speed the Application of dc motor speed control system when the knob is turned to the end. Note:
Do not reverse the positive and negative poles.
Christine Zhu ( Sales Department; Miss. )
NER GROUP CO.,LIMITED
Factory Add: No.5 Wanshoushan Road, Yantai, Shandong Province, China (264006)