High voltage power supply (HVPS) also known as DC high voltage generator, is the traditional name of high voltage power supply, refers to mainly used for insulation and leakage detection of high voltage power supply, now high voltage power supply and high voltage generator has no strict
Principle of the high voltage power supply
The high voltage power supply is mainly composed of high voltage transformer, X-wire tube filament transformer, high voltage rectifier, variable voltage converter box and high voltage socket and other components. In the process of working, press 0.75 times the voltage display latch button, then the display value of 0.75 times the voltage display table will lock, to maintain the display value is inconvenient, so that it can be easily used as a reference voltage when doing the zinc oxide arrester test. Press the time open button at any time to start the time relay and sound an alarm when the preset time is reached. In this process, if the load current exceeds 0-10% of the rated output current of the instrument, the “over current” indicator light is on for overcurrent protection against damage to the test article and instrument.
Composition of The high voltage power supply
Classification of high voltage power supply: high voltage power supply according to the inverter frequency is divided into: power frequency high voltage generator, medium frequency high voltage generator and high frequency high voltage generator three categories.
Action of the high pressure power supply
The main function of the high voltage power supply is to supply the X-ray tube Yin, anode DC high voltage and filament heating voltage. It is mainly composed of power supply circuit, high voltage circuit, filament circuit, control circuit, application equipment circuit and the box of the above packaging circuit. The power supply circuit mainly plays the role of isolating the network power supply from other circuits of the high voltage generator and supplying power to other circuits. The high voltage circuit mainly boosts the AC low voltage (220V / 380V) to the DC high voltage (150kV) to power the X-ray tube. The filament circuit mainly reduces the low voltage (220V / 380V) to the ultra-low voltage (12V) to power the filament and heat the filament to generate free electrons. The control circuit is mainly used to control the output voltage, output filament current and loading time of the high voltage generator, and to communicate with other image chain components of X-ray equipment to ensure the accuracy of exposure. Application equipment circuit: In addition to supplying power
Thick Film Resistor can not be changed similar to a variable resistors because its resistance value can be determined at manufacturing time itself. The classification if these resistors can be done based on the process of manufacturing & also materials utilized in their manufacturing like carbon,wire wound,thin-film,and thick film resistors.So this article discusses one of the types of fixed resistor namely thick film resistor–working and its applications.
1.Series MXP35 & LXP100 for high-frequency and pulse-loading applications
2.Series RHP : this unique design allows you to use this elements in the following areas: variable speed drives, power supplies, control devices, telecommunications, robotics, motor controls and other switching devices.
3.Series SUP : Mainly used as a snubber resistor to compensate the C-R peaks in traction power supplies. Furthermore for speed drives, power supplies, control devices and robotics. The easy mounting fixture guarantees an auto-calibrated pressure to the cooling plate of about 300 N.
4. Series SHV & JCP & MCP : Power and voltage ratings are for continuous operation and have all been pretested for steady-state performance as well as momentary overload conditions.
Post time: Apr-04-2023