Physical standard battery potential difference meter experiment instrument and method for measuring potential difference by means of the experiment instrument

Abstract

The invention discloses a physical standard battery potential difference meter experiment instrument and a method for measuring potential difference by means of the experiment instrument, and relates to the potential difference meter experiment instrument and the method for measuring the potential difference by means of the experiment instrument. The problems that due to the facts that an existing chemical-type standard battery is easily influenced by external environment, and the stability of the electro-dynamic potential value output by the chemical battery is poor, the potential difference meter experiment instrument is poor in measuring accuracy are solved. The positive electrode of a direct-current voltage-stabilized power source is connected with the anode of a light-emitting diode and one end of an RP at the same time, the cathode of the light-emitting diode is connected with the negative electrode of the direct-current voltage-stabilized power source and one end of a resistor at the same time, the other end of the resistor is connected with the other end of the RP, the positive electric signal input end of a potential difference meter is connected with the positive electrode of the direct-current voltage-stabilized power source, and the negative electric signal input end of the potential difference meter is connected with the movable end of the RP. The experiment instrument is utilized for measuring the potential difference of a device to be measured, the movable end of the RP is adjusted, and the measurement of the potential difference of the device to be measured is achieved. The physical standard battery potential difference meter experiment instrument is applicable to measuring the potential difference.

Description

technical field [0001] The invention relates to a potentiometer experimental instrument and a method for measuring potential difference by using the potentiometer experimental instrument. Background technique [0002] The standard battery used in the potentiometer tester is generally a chemical battery, which is greatly affected by temperature, especially the change of the indoor ambient temperature will cause the change of the output electromotive force of the chemical standard battery. Therefore, it must be calibrated according to the law of temperature change before each use. The chemical standard battery can only be used; and the chemical standard battery cannot be tilted, let alone shaken or inverted, otherwise the chemical substances in the glass tube will be mixed together, which will affect the electromotive force value and stability, and even cannot be used; in addition, the chemical standard battery also cannot be used. It is greatly affected by light, because the ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing chemical formula standard battery is easily affected by the external environment, the stability of the output electromotive force value is poor, and the measurement accuracy of the

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