K70C881

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K70C881 is a semiconductor device developed at the beginning of the 21st century. It is mainly used for the driving control of a medium and large power DC motor or a large capacity power AC motor. The device is mainly used in the field of industrial automation, power transmission automation, electrical power link equipment, servo control systems, wind power control systems and etc. K70C881 has high reliability, wide range operation, small size and light weight, so it has become the preferred choice for those motor control field.

The working principle of K70C881 is based on the motor\'s self-rotating power feedback principle. It is generally composed of two parts: the power bridge and the control board. The power bridge is composed of four insulated gate bipolar transistors (IGBTs) which are connected in bridge mode. The control panel is composed of two parts: the logic control and the power stage. The logic control part is responsible for receiving control signals and outputting gate pulses of IGBTs according to the content of control signals. The power stage is a current sensitive circuit which determines the pulse energy of IGBTs according to the operating requirements in accordance with the current and voltage. Through this two-step process, it can effectively control the current in motor operation, and realize various control functions, such as forward and reverse rotation, positive and negative speed control, speed ratio change and etc.

K70C881 has a wide range of application fields. In the field of industrial automation, it can be used for driving various kinds of axis motors, such as X axis, Y axis, Z axis and etc. Besides, it can also be used for the field of power transmission automation, such as controlling the speed and torque of the motor, reversing the motor direction, maintaining the speed and so on. In the field of electrical power link equipment, it can be used to control the speed of the switch in the traditional and modern power stations. For the servo control system, K70C881 can effectively control the current in the motor operations and realize various control functions, such as frequency conversion speed regulation, speed ratio change, etc. Moreover, in the field of wind power control systems, K70C881 can also be used to achieve the same function as the traditional power station.

K70C881 has a wide application field and the control principle is simple, so its application is very common in the industrial market. It can work efficiently and reliably in various control occasions, which has greatly improved the operating efficiency and convenience. Therefore, K70C881 has become a popular semiconductor device in the motor control field.

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