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Variable DC voltage source

一种直流电压源、可变的技术，应用在电气元件、直流功率输入变换为直流功率输出、调节电变量等方向，能够解决成本高、影响测试效率准确性、测试过程不能连贯等问题，达到维持连贯性、降低成本、保证准确性的效果

Inactive Publication Date: 2007-05-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing voltage rectifier 10 can only output a specific output voltage. In the chip voltage stability test process, when the test voltage of the chip needs to be changed, it is necessary to manually disconnect the power supply, replace the voltage rectifier 10 or change the voltage in the voltage rectifier. Resistor RF2 to obtain a new output voltage, which will cause incoherence in the test process and affect the test efficiency and accuracy of test results. Although the output voltage of the adjustable DC power supply is adjustable, its cost is relatively high, and it is changing It is also necessary to cut off the power first when outputting the voltage, which will cause the test process to be incoherent and affect the test efficiency and the accuracy of the test results.

Method used

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Embodiment Construction

[0011] Referring to FIG. 2 , it is a circuit diagram of a preferred embodiment of the variable DC voltage source of the present invention. The variable DC voltage source 20 includes a rectifier 22 and a characteristic resistor R1. The rectifier 22 is an LM1084 rectifier chip, which includes a The voltage input pin VIN, a voltage output pin VOUT and an adjustment pin ADJ, the characteristic resistor R1 is connected between the voltage output pin VOUT and the adjustment pin ADJ.

[0012] The variable DC voltage source 20 also includes an adjustable load 24 , and the adjustment pin ADJ is grounded through the adjustable load 24 . The adjustable load 24 can be a variable resistance box or other resistance-adjustable loads. In this preferred embodiment, the adjustable load 24 includes a selection switch 242 and a load module 244. The selection switch 242 is A switch to select one out of six, the load module includes six resistors R2-R7, the port on one side of the selector switch 2...

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Abstract

The invention relates to a variable-direct-current power source, which comprises rectifier and characteristic resistance, wherein the rectifier comprises one voltage input pin, one voltage output pin, and one adjust pin; the resistance is connected between voltage output pin and adjusting pin; said invention also comprises one adjustable load, via which the adjusting pin is connected to ground; via changing the load value, the output voltage of output pin of rectifier can be change. The invention can adjust direct current power.

Description

【Technical field】 [0001] The invention relates to a direct current voltage source, in particular to a variable direct current voltage source with adjustable output voltage. 【Background technique】 [0002] After the hardware design of the electronic circuit is completed, various electrical characteristics of the circuit are usually tested to verify the reliability of the hardware. This test includes a chip voltage stability test. In the chip voltage stability test, the voltage input to each chip in the circuit is divided into several test voltage values ​​according to the rated maximum and minimum voltage range of the chip, and the required test voltage value is input into the chip to verify the stability of the circuit. During the test, an adjustable DC power supply (DCPOWER SUPPLY) that can display the output voltage value is required to supply voltage to the chip, and disconnect the voltage source according to the test progress, and manually adjust the above adjustable DC ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/137G05F1/56
CPCG11C5/147H02M3/156G11C29/028G11C29/02G11C29/021H02M2001/0025G11C5/14G11C29/12005H02M1/0025
Inventor 郭恒祯
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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