A high-precision high-voltage program-controlled power supply

Abstract

The invention discloses a high-precision high-pressure program control power supply, which comprises an adjusting tube circuit connected with a power converting and boosting circuit and an error amplifying circuit. The power converting and boosting circuit is connected with a voltage-doubler rectifier filter circuit; the voltage-doubler rectifier filter circuit is connected with the error amplifying circuit, a voltage isolation sampling circuit, and a current isolation sampling circuit. The error amplifying circuit is connected with a micro controller through a high precision D / A conversion circuit. The micro controller is connected with the high-precision A / D conversion circuit and a serial communication circuit. The high-precision A / D conversion circuit is connected with the voltage isolation sampling circuit and the current isolation sampling circuit. The invention not only can greatly improve the precision of outputted voltage, but also means voltage adjust precision can be easily controlled; with remote control and serial communication functions, accurate voltage value and current value can be checked through the serial communications in real time.

Description

technical field [0001] The invention belongs to the technical field of switching converters, in particular to a high-precision high-voltage program-controlled power supply. Background technique [0002] Switching converter, also known as switching power supply, is a kind of power supply that uses modern power electronic technology to control the time ratio of switching tube on and off to maintain a stable output voltage. The input voltage is converted to an output voltage at the load. High-voltage power supply is a kind of switching converter, which can convert the input low voltage of tens of volts into the output high voltage of thousands of volts or even tens of thousands of volts, and has a wide range of applications in various fields. Many high-tech developments, such as research on the electrostatic effect of agricultural biology and medical X-ray machines, require the use of high-voltage power supplies. [0003] With the development of electronic equipment, in order...

AI Technical Summary

Problems solved by technology

However, the current high-voltage power supply uses resistor divider as the reference voltage and adopts the method of potentiometer voltage regulation. Not only the output voltage accuracy is limited, but also the voltage regulation accuracy is not easy to control; in addition, the current high-voltage power supply has a single function, for example, some electronic equipment requires high voltage The power supply has remote control and serial communication functions, and it is required to be able to query accurate voltage and current values ​​in real time. The current high-voltage power supply can no longer meet the requirements.

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