String vibration is a resonance phenomenon that is often seen in string instruments. To understand precisely the vibration of the strings and to measure the natural frequencies according to the length, thickness and tension of the strings, it is possible to compare them with the theoretical values and to study the relation between the mode shape, natural frequency and sound of strings. SVTA-900 is an experiment device designed for string vibration phenomena.

Detailed Description

  • Experiment on various strings of different thickness
  • Tension calculation using weights
  • accurate tension control by increasing or decreasing additional weights
  • Standing wave up to 6 orders with sufficient string length
  • Possible to extend the desired string length.
  • Tension Adjustment: Adjust with various weight(500, 300, 200, 100, 50 gram)
  • String installation: Install the string at the idle roller winding two turn.
• Learning string natural frequency
• Understanding the relationship between sound wave generation and string vibration
• Learning the change of natural frequency according to the length of string
• Learning the change of natural frequency according to the tension of string
• Learning the change of natural frequency according to the thickness of string
• Derive the formula for natural frequency calculation according to string length, tension and thickness
Electromagnetic Shaker WSK-40
Rated force Sine : 40N, Random noise: 35N
Frequency range 5Hz – 5000Hz
Rated current 3.5A
Nominal impedance
Effective mass of amateur 150 gram
Max. acceleration Sine: 200m/s2, Random: 100m/s2
Max. velocity 1.5m/s
Max. displacement 10mm Pk-Pk
Power Amplifier WPA-1100
No of channels 2 channels
RMS Power 100W x2 max. 200W x 2 (2W load)
Min. coil impedance 2W
THD 0.01%
Frequency range 10Hz – 20kHz
Signal Generator GFG-8020H
Amplitude >20Vp-p (Open voltage )
>10Vp-p (50Ω Load)
Impedance 50Ω±10%
Display 4 digit LED Display
Frequency range 0.2Hz – 2MHz 7 Steps
Supply voltage AC100V/120V/220V/230V±10%, 50/60Hz
Environmental and physical characteristics
Power consumption Less than 200W
Ambient temperature 0~50°C
Size 1800(W) x 900(D) x 1600(H)mm
Weight 100 kg (including testing material)