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Chopper is widely used for electric traction. The stepless speed regulation of DC motor such as subway, electric locomotive, trolleybus and battery carrier.

Compared with the traditional method of voltage regulation of series resistance in the line, it not only has good starting and braking characteristics, but also saves the large volume of DC contactor and varistor with large power consumption, and the power consumption is greatly reduced.

Chopper circuit (also called DC chopper circuit) refers to the use of power, because of some need, part of sine wave "cut off". (for example, when the voltage is 50V, the back 50-0v part is cut off with electronic components and the output voltage is 0.) and then used in DC-DC switching power supply, mainly in the voltage changing link of switch power supply, the original one straight-line power supply is "cut" by the line into a pulse impulse. The direct current that converts DC to another fixed or adjustable voltage is also called DC / DCconverter.

DC chopper is a kind of power electronic converter which converts the voltage constant DC to the voltage adjustable DC. It is also called DC chopper or dc/dc converter.

The main idea of DC conversion by chopper is to cut the constant DC voltage or current into a series of pulse voltage or current by using the fast on and off regulation of power electronic switching components. Under the corresponding filtering environment, the average value can be obtained on load smaller than or greater than the voltage or current of power supply.

If the switching components are changed in action frequency, or the time ratio of switching components on and off, the pulse width of this pulse sequence can be changed to adjust the average output voltage and current.

The above is the introduction of IGBT module power module manufacturer semipower to its power module. Inheritor electronics is a power semiconductor power module manufacturer with power electronics technology as its professional field. It provides the formulation, manufacturing and processing of power semiconductor power modules for enterprises and companies. In addition, it also provides OEM or OEM business for enterprises. The main products are: IGBT module power module, thyristor (thyristor) power module, ultra fast recovery epitaxial diode power module, single-phase rectifier bridge power module, three-phase rectifier bridge power module, rectifier diode power module, Schottky diode power module and other power semiconductor electronic components.