Digital capacitor charging and discharging experiment instrument
A technology of capacitor charging and discharging, experimental instrument, applied in instruments, educational appliances, teaching models, etc., can solve the problem of small scope of experiments and so on
Pending Publication Date: 2021-06-18
NINGBO HUAMAO CULTURAL EDUCATIONAL
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Problems solved by technology
[0003] The traditional capacitor charge and discharge tester generally only has one power supply, one capacitor, and two LED lights. The traditional tester can only do one experiment of the direction of capacitor charging and the direction of capacitor discharge, and observe the charging time through the corresponding LED lights. What is the voltage, what is the voltage when discharging, the scope of the experiment is too small
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred d...
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A digital capacitor charging and discharging experiment instrument disclosed by the present invention comprises a PCB, wherein the left side of the middle upper part of the top surface of the PCB is fixedly connected with a charging resistance box socket; the right side of the middle upper part of the top surface of the PCB is fixedly connected with a discharging resistance box socket; the left part of the middle upper part of the top surface of the PCB is fixedly connected with a pointer type bidirectional ammeter; a current curve liquid crystal display screen is fixedly connected to the left side of the pointer type bidirectional ammeter on the left side of the upper middle portion of the top face of the PCB, and a voltage curve liquid crystal display screen is fixedly connected to the right side of the upper middle portion of the top face of the PCB. According to the instrument, the magnitude and direction changes of voltage and current during charging and discharging of a capacitor are observed through the pointer type ammeter, U-t images and I-t images during charging and discharging of the capacitor are observed through a sensor and an IC circuit of the sensor, and the relation between the charging and discharging time and a capacitance value and the relation between the charging and discharging time and a resistance value are explored; and the time constant Xi = RC of capacitor charging and discharging is researched.
Description
technical field [0001] The invention relates to the field of high school physics teaching equipment, in particular to a digital capacitor charging and discharging experiment instrument. Background technique [0002] In high school physics class, capacitor charging and discharging is an important content, and the demonstration of capacitor capacity and charging and discharging process is also the content that everyone pays attention to. Over the years, in order to help students correctly understand this concept, some demonstration experiments in conjunction with teaching settings, such as the demonstration of capacitor charging and discharging, are mostly connected directly between the two poles of the power supply and the terminals of the two pole plates of the capacitor to charge, and then go through the ammeter or small light bulbs. Demonstrate the discharge process, or connect some sensing elements to the computer to demonstrate the delay characteristics of the charging a...
Claims
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Login to View More IPC IPC(8): G09B23/18
CPCG09B23/182
Inventor 章澄
Owner NINGBO HUAMAO CULTURAL EDUCATIONAL