Novel audion reverse saturation current tester

Abstract

The invention relates to the technical field of test instruments, in particular to a novel audion reverse saturation current tester. The novel audion reverse saturation current tester comprises a bridge-type input circuit, a single chip microcomputer, an analog switch, a voltage amplifier circuit, an A / D conversion device and a temperature sensor, wherein the bridge-type input circuit can collect an audion reverse voltage, the single chip microcomputer controls a unit circuit and conducts data correction on the unit circuit, the analog switch achieves signal channel selection under the control of the single chip microcomputer, the voltage amplifier circuit amplifies an output signal from the analog switch, the A / D conversion device achieves digitalization of an analog signal output by the voltage amplifier circuit through sampling and quantification and inputs the converted signal into the single chip microcomputer, and the temperature sensor collects compensation of the temperature for the electrical conductivity of an audion. The novel audion reverse saturation current tester is easy to operate and has the functions of low-voltage measurement, real-time reverse voltage display, real-time reverse saturation current display, real-time current environment temperature display and the like, a high-precision, low-cost and safe test of audion reverse voltage current characteristics is achieved, the test result is corrected through programming software, and system measurement accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of test instruments, in particular to a novel triode reverse saturation current tester. Background technique [0002] With the continuous development of electronic technology, triodes play an increasingly important role in electronic products. The related characteristics of triodes may have a great impact on the performance of electronic products, especially the reverse saturation current characteristics of triodes. Improper use of this characteristic may cause electronic products to malfunction or even cause serious safety accidents, such as burnout, explosion, etc. Therefore, Instrumentation to measure this property is required. The traditional measurement method is to directly measure the reverse voltage with a voltmeter, and measure the reverse saturation current with an ammeter, which is very inconvenient to operate, and safety accidents are likely to occur in high-voltage live operation. The traditio...

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Problems solved by technology

The related characteristics of triodes may have a great impact on the performance of electronic products, especially the reverse saturation current characteristics of triodes. Improper use of this characteristic may cause electronic products to malfunction or even cause serious safety accidents, such as burnout, explosion, etc. Therefore, The instrument needed to measure this characteristic

The traditional measurement method is to directly measure its reverse voltage with a voltmeter, and measure its reverse saturation current with an ammeter, which is very inconvenient to operate, and safety accidents are likely to occur in high-voltage live operation

The traditional test method largely depends on the accuracy of the ammeter, and the price of ordinary high-precision ammeter is very high, so it is difficult to be widely used. The traditional reverse saturation current test method is as follows: figure 1 shown

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