LMEC-21 Vibrating String Experiment(string sound meter)

Short Description:

LMEC-21 uses steel string and oscilloscope to measure the standing wave and vibration of uniform string, and can expand innovative experiments, this instrument needs self-prepared oscilloscope.
LMEC-21A is a cheaper version which don't need oscilloscope, The purpose of the instrument is to set up interesting string sound experiments. It can not only do the traditional basic string vibration experiment, but also expand to the applied experiment to calibrate the intonation of string instruments and learn the working principle of string instruments.

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Product Detail

Product Tags

Main Experiments
1. The relationship between string length, linear density, tension and standing wave frequency is studied;
2. The propagation velocity of wave is measured when the string vibrates;
3. Inquiry experiment: the relationship between vibration and sound; 4. Innovation and research experiment: Research on the electrical mechanical conversion efficiency of standing wave vibration system.

Main technical parameters

Description	Specifications
Electromagnetic induction sensor probe sensitivity	≥ 30db
Tension	0.98 to 49n adjustable
Minimum step value	0.98n
Steel string length	700mm continuously adjustable
Signal source
Frequency band	Band i: 15 ~ 200hz, band ii: 100 ~ 2000hz
Frequency measurement accuracy	±0.2%
Amplitude	Adjustable from 0 to 10vp-p
Dual trace oscilloscope	Self-prepared