Application of electronic potentiometer module in direct current stabilized voltage power supply

Abstract

An adjustable direct current stabilized voltage power supply mainly consists of several components: 1, a three-terminal integrated voltage stabilizer output by a fixed voltage; 2, a three-terminal integrated voltage stabilizer output by adjustable voltages; 3, an adjustable switching power supply module; 4, an adjustable low dropout linear power supply module; and 5, a high power transistor and an MOS (Metal Oxide Semiconductor) power transistor. The adjustable direct current stabilized voltage power supply is characterized by having the high voltage output and the dual-path isolated voltage output, and the output voltages are mostly adjusted by mechanical potentiometers. The electronic potentiometer module is a novel electronic potentiometer device and has strong use functions, performance extension abilities, integrated independence and output passivity, three output modes of adjustable resistance output mode, potentiometer output mode and voltage output mode, a positive regulation mode and a negative regulation mode. The unique characteristics and functions enable that the electronic potentiometer module can be applied together with direct interfaces of all adjustable direct current stabilized voltage power supplies, replace the mechanical potentiometer and realize high precision adjustment of output voltages.

Description

Technical field [0001] The universal electronic potentiometer module is a completely new concept and complete potentiometer device composed of electronic components. It has all the characteristics of the traditional mechanical potentiometer and a large number of extended functions that are impossible for the mechanical potentiometer. It is directly applied to the adjustable direct current stabilized power supply for precise adjustment of the output voltage, and this technology belongs to the application field of electronic components. Background technique [0002] The adjustable DC regulated power supply is a power supply with the highest technical indicators and a large amount of use among the various DC regulated power supplies today. However, except for the expensive program-controlled power supply, ordinary adjustable DC regulated power supplies use multiple One-turn mechanical potentiometers are used for output voltage adjustment, or two mechanical potentiometers are us...

AI Technical Summary

Problems solved by technology

[0003] Mechanical potentiometers have been used for nearly a hundred years. Mechanical potentiometers have mechanical wear, are afraid of vibration, and are easily damaged by frequent actions. When used as an adjustable DC regulated power supply for output voltage adjustment, there are still difficulties in voltage regulation, and the adjustment accuracy is low and consistent. Sex difference and many other disadvantages

[0004] DIP switches and resistor networks can also constitute potentiometers used in adjustable DC regulated power supplies, but there are mechanical breakpoints, which cannot be used in many situations where there is a continuous requirement for resistance changes. In addition, there are large volumes and no auxiliary functions, etc., it is essentially a digital mechanical potentiometer, so there are also various defects of mechanical devices

[0005] There is a digital potentiometer integrated chip, but it requires a large number of peripheral circuits and secondary design to realize the complete function of the potentiometer. Since the output resistor network is integrated in the chip, it is subject to many restrictions and almost no expansion functions. Its application has great potential. The limitations of the adjustable DC power supply and the withstand voltage problem are difficult to overcome

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