Q:What is the difference between the collector and the emitter mode?

The emitter is very high, the base is mixed and the collector is the lowest

Q:Siemens g120 inverter torque limit what is the meaning

Torque is a strain, the inverter can not actively control the output torque size, only according to the size of the load demand torque, the output of the corresponding torque.

Q:Asus notebook power adapter how to open

Can only be forced to open the pants and other things wrapped around the line on the line suggested that do not casually demolition

Q:Fuji inverter motor set the number of poles will not have any effect?

The number of motor poles corresponds to the speed of the motor, the number of poles is not set when the speed of the control error, in the high speed requirements of the transmission is not allowed.

Q:How to disassemble the notebook power adapter

HP laptop power adapter for the whole design of small sealed, you can follow the following steps to dismantle: 1, laptop power adapter for the injection molding package or with a strong adhesive glue, without any screws, so generally only with violence Cracked. However, as long as the method properly, after the dismantling of the power adapter can be restored to the original, do not carefully observe almost no traces of open.

Q:Laptop power adapter (no power supply, but indicator light)

Notebook power adapter can not charge, but the indicator light does not light the common reasons are: 1, the power adapter is broken or the connector is broken. 2, the power adapter output problem, no output or output is too low, can not give the computer charge. 3, the notebook charging interface is broken, not into the electricity charge. 4, the notebook power management circuit out of the fault, resulting in can not charge.

Q:What is the difference between variable frequency motor and variable speed motor?

The variable frequency motor requirements are high, are special motor, so the general motor can not use the inverter to speed. According to the above formula, it can be seen that increasing the frequency, the motor speed will be faster, reduce the frequency of the motor speed is slow, variable frequency motor core is also a special material, because the ferromagnetic material There is a saturation period, to the saturation period, regardless of whether the motor current increases, the motor will not continue to increase the intensity of the magnetic field,

Q:A water supply project, how to choose electrodes and frequency converters, such as giving a 7-storey water supply

1. Select the pressure pump head: 7 * 2.5 (3) = 17.5 (21) meters; this is the number of theory, in fact, should be selected 40 meters, (0.4Mpa).

Q:Three-phase asynchronous AC motor speed control method

Second, the frequency control method Frequency control is to change the frequency of the motor stator power supply, thus changing its synchronous speed control method. Frequency converter system can be divided into AC - DC - AC inverter and AC - AC inverter two categories, most of the current domestic use - cross - frequency converter. Its characteristics: High efficiency, no additional loss during the speed control process; Wide range of applications, can be used for cage type asynchronous motor; Speed ??range, the characteristics of hard, high precision; Complex technology, high cost, maintenance and repair difficult. This method is suitable for applications requiring high precision and better speed performance.

Q:What is the principle and implementation of the inverter?

AC-DC is relatively simple We know that the diode has a one-way conductivity You can use this feature of the diode into a bridge So that the other end is always flowing into the other end is always out of the way it gets the voltage sinusoidal change of the DC If the need for smooth DC also need to be rectified Simple method is to connect a capacitor