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Educational Materials !! Electromagnetic and Electronic Apparatus
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YS3033
Low-Barometric Pressure Discharge Tube
For demonstrating electric discharging under the low barometric pressure, The discharge varies with different barometric pressure in the tube.
Tube length: 400mm
Outer diameter: 25\1mm

YS3034
Low Atmospheric Pressure Discharge Tube Set
It's used for demonstrating the phenomenon of discharge under low atmospheric pressure. The discharge is varied due to the different atmospheric pressure in discharge tube.
Length of tube: 400mm
O.D. Of tube: 25\1mm
To be used together with low-voltage powder supply, induction coil.
YS3035
Signal Source for Teaching Purpose
Output wave form Sine wave,square wave and toothed wave
Output frequency 500KHz-1700KHz,400KHz-580KHz
400Hz,500Hz,1000Hz,1500Hz and 2000Hz
Square wave 50Hz and 1000Hz
Toothed wave 600Hz-3000Hz
Ultra-low frequency 0.3Hz-0.5Hz
Output voltage Sine wave: under 0.3KΩ load,
low frequency −400mV,high frequency−200mV
Square wave: under 1kΩ load,500Hz>1v,1000Hz>3V
Toothed wave:under 1K load,>10V
YS3036
Frequency Scanner for Teaching Purpose
Frequency range Low frequency 30Hz-25KHz(Both manual and auto types available)
Medium frequency 455Hz-475KHz(Both manual and auto types available)
YS3038
Fully Electronic High-voltage Static Charge Generator
The present instrument is able to do all kinds of experiments on electrostatics,i.e ,to trace equipotential line on plan of electric field and spectrum for electric line of force(3 types of spectrum),electrostatic experiments on electrostatic induction, electrostatic experiments on electrostatic induction, electrostatic shield ,electrostatic charges distributed only on the outer surface of a conductor in balance of electrostatic charge. polarization of electrolyte in electric field ,electrostatic wind mill, electrification of electroscope, experiments on electromagnetism, such as low atmospheric pressure discharge tube set ,spectrum tube set ,x-ray tube,cathode-ray tube (indicating straight-forward ,mechanical effect ,magnetic effect and electric deflection),excited discharge of gas ,spark discharge,and rectifier circuit ,filter circuit and amplification circuit of electronic tube and transistor ,and other experiments such as electrostatic paint spraying ,electrostatic flocking ,electrostatic precipitation,and corona discharge(generating negative in gases )etc.
Technical specification
1) Power supply: AC 220V,50Hz
       DC 9V or DC 12V
      2) High-voltage output: The sparking distance of point discharge is not less than35mm
3) Low-voltage output:(Continuous operation)
 AC:9 V & 12V (9V) for type A
  6.3V(2A) & 6.3V(1A) for type B
 DC:9V(1A) for type A
  12V(1A) & 250V(60mA) for type B
4) Operating ambient temperature:-10≧--40≧
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