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The role of new components on switching power supply

After more than 20 years of continuous development, the development of new power devices has laid the foundation for the high frequency of switching power supplies, and the application of power field effect transistors (MOSFETs) and insulated gate bipolar transistors (IGBTs) makes small and medium power switching power supplies operate at frequencies as high as 400kHz(AC-DC converter) and 1MHz (DC-DC converter).

2021-11-12

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The reason for the rapid development of switching power supplies

Switching power supply technology is an important branch of power electronics technology, mainly studying AC/DC, DC/DC two kinds of power conversion. For the traditional transistor series regulation voltage regulator transistor is linear continuous control, it has the advantages of good stability, small output voltage ripple, reliable use, but at the same time due to the use of power frequency transformer

2021-11-12

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The development of pulse electrolytic power supply

The pulse power supply technology is improved with the development of power semiconductor switching devices. Before the emergence of modern power semiconductor devices, the pulse power supply established by means of silicon diode rectifier or thyristor turn-off can only obtain a small capacity, and the pulse current of lower frequency and wider sine wave type can not meet the needs of further development of pulse current electrolysis processing.

2021-11-12

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Domestic thyristor DC power supply

The thyristor rectifier power supply for electrolytic machining in China has complete specifications, and its performance can basically meet the requirements of use. The main problem of thyristor DC power supply is that the transformer volume is large (not used for water cooling), and the main circuit is still many parallel branches, so the area is large. It does not constitute the whole sealed cabinet, so the corrosion resistance is poor, the service life is short, and the obstacle rate caused by rust is still high.

2021-11-09

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Development of DC power supply for electrochemical machining

At present, most of the electrolytic machining production at home and abroad still uses DC power supply. Electrochemical machining DC power supply early use of DC generator set, its advantages are stepless voltage regulation, stable performance, reliable use, its disadvantages are large footprint, large noise, low efficiency, poor sensitivity to adjust the mind, resulting in low voltage stability accuracy, short circuit protection time. With the development of high-power silicon diodes, silicon rectifier power supplies have gradually replaced ECM DC power supplies DC generator sets.

2021-11-09

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