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FAQ

Laptop adapter heat

Therefore, in the design and production of switching power supply, we must choose high temperature components. Of course, be sure to control the temperature of the power supply within the allowable range of the application environment. First, the conversion efficiency should be designed as high as possible, and secondly, to use the pressure drop is small, low loss of switching components, the third is to be thermal design, cooling area to be as large as possible, more than 100W switching power supply Should have a metal perforated shell, or add a cooling fan. The current notebook power adapter power is generally around sixty or seventy W, the use of high temperature plastic fire sealed package, the internal heat generated by the plastic shell mainly distributed out. Therefore, the power adapter surface temperature is still quite high, the maximum temperature or even reach about 70 degrees! Think of the inside of the adapter, it is not like the fire! So, when you use the laptop, try to place the power adapter in a better place to ventilate heat, do not put books and the like on the power above. As for the kind of hot feeling, do not have to worry about is the power, not angry strange!

Will the asynchronous motor pole change the number of speed control can also be combined with the frequency converter

but the use of the inverter is based on changes in the load by changing the frequency of power into the motor at any time speed control, you can achieve a smooth and accurate stepless speed control is Now widely used in a speed control method, especially for the load often change or often in the light load operation of the motor.

How to make the motor speed (control speed), can not use frequency

Do not use the variable frequency motor with the speed motor

Can the inverter stop intermittently during operation? If so, how to connect and set up

One of these terminals is a common terminal, which leads from the common terminal and is connected to the corresponding terminal via the relay contact

Will the motor suddenly stop when the inverter is suddenly powered down?

Generally in the absence of external brake or brake case, if the power, the motor is in a free stop state, uncontrolled,will gradually slow down to 0

If it is 8-pole variable frequency motor, enter the motor nameplate parameters in the inverter input for the 4 pole can?

Motor brand above all, the general number of wrong is the inverter shows the speed is not right, for the speed control requirements are not high places will not be a problem, you can use

Inverter principle eff23

The basic principle of the inverter The inverter is a device that converts the power frequency (50Hz or 60Hz) into AC power of various frequencies to realize the variable speed operation of the motor. The control circuit completes the control of the main circuit, and the rectifier circuit converts the alternating current into direct current and DC Circuit rectifier circuit output smooth filter, the inverter circuit will reverse into the DC power.

How does the variable frequency motor output torque at very low frequencies?

Low frequency, the motor torque is relatively low, generally VF inverter performance is good or bad, the price level reflected in this time. But there is torque to enhance the function, it will not move without moving. If no load can not start, check the motor card and other mechanical problems such as whether there is a problem.