a beat generator

A generator and waveform generator technology, applied in the field of physics teaching aids, can solve problems such as unintuitive observation frequency, fixed natural frequency of tuning fork, difficulty in transportation and storage, etc., to achieve convenient transportation and storage, meet teaching requirements, and reasonable structure Effect

Active Publication Date: 2018-02-02
XINXIANG MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in physics teaching, two tuning forks with the same frequency are used to explain the phenomenon of beat generation, but the natural frequency of the tuning fork is fixed and cannot be changed at will, and there is no frequency display, so the relationship between the occurrence of beat and the frequency cannot be observed intuitively In addition, the tuning fork is easily damaged during transportation and storage, which causes more difficulties in transportation and storage, and will affect the quality of teaching

Method used

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  • a beat generator

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Embodiment Construction

[0007] Describe embodiment in detail in conjunction with accompanying drawing,

[0008] A beat generator, which includes a resistor and a capacitor. The present invention is composed of two waveform generators. The structure of each waveform generator is: resistor R1 is connected in parallel with capacitor C1, one end of which is grounded, and the other end is connected in parallel with capacitor C2. At the same time, it is connected to the non-inverting input terminal of the operational amplifier, the capacitor C2 is connected in series with the adjustable resistor RP1, the adjustable resistor RP1 is connected in series with the adjustable resistor RP2, and the adjustable resistor RP1 is connected to the output terminal of the operational amplifier, and the adjustable resistor RP2 is connected to the resistor R2 One end is connected in series, the other end of the resistor R2 is grounded, the non-grounded end of the resistor R2 is connected to the inverting input of the operat...

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Abstract

The invention discloses a beat generator. The invention is composed of two waveform generators. The structure of each waveform generator is: a resistor R1 is connected in parallel with a capacitor C1, one end of which is grounded, and the other end is connected in series with a capacitor C2 and connected to an operational amplifier. Connected, capacitor C2 is connected in series with adjustable resistor RP1, adjustable resistor RP1 is connected in series with adjustable resistor RP2, and adjustable resistor RP1 is connected with operational amplifier A, adjustable resistor RP2 is connected in series with resistor R2, resistor R2 is grounded, operational amplifier and speaker Connected, there is a frequency meter directly connected between the operational amplifier and the speaker; the operational amplifier and the speaker are powered by the power supply. The invention has reasonable structure and good application effect.

Description

Technical field: [0001] The invention relates to physics teaching aids, in particular to a beat generator suitable for sound wave teaching. Background technique: [0002] A beat is a phenomenon in physics commonly used to measure frequency. At present, in physics teaching, two tuning forks with the same frequency are used to explain the phenomenon of beat generation, but the natural frequency of the tuning fork is fixed and cannot be changed at will, and there is no frequency display, so the relationship between the occurrence of beat and the frequency cannot be observed intuitively In addition, the tuning fork is easily damaged during transportation and storage, which causes more difficulties in transportation and storage, and will affect the quality of teaching. Invention content: [0003] The purpose of the present invention is to design a beat generator with reasonable structure and good use effect. [0004] The technical scheme of the present invention is a beat gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/14
CPCG09B23/14
Inventor 刘永朱元培于毅张业宏朱永涛刘东华李明彩
Owner XINXIANG MEDICAL UNIV
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