e/m Apparatus

CA$1.00
e/m Apparatus
SKU:
98-699850
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Product Overview

This set includes:

  • e/m Apparatus
  • e/m Tube
  • Power Supply for e/m Apparatus

Discover our highly regarded e/m Apparatus, designed for durability with a robust black acrylic resin body. Ideal for student experimentation, it allows a clear demonstration of the effects of electric and magnetic fields on an electron beam. This compact unit delivers an engaging and visually impressive learning experience, featuring a large, circular orbital path for the electrons, and integrated Helmholtz coils for precise control.

The e/m Tube is equipped with a built-in engraved glass rod and scale along the central axis, reducing parallax errors when measuring the electron orbit’s diameter. The experiment can be observed through either the front-view hole or the rear sliding panel.

Key Features:

  • Vacuum Tube: 130mm diameter, filled with helium gas, and an integrated phosphor scale for clear observation
  • Helmholtz Coil: 300mm diameter, 1mm wire with 130 turns, two coils mounted in parallel with variable resistors for current adjustments
  • Anode: 200–500V
  • Heater: 6.3V/1A
  • Helmholtz Coil: 12V DC/2A
  • Constructed from durable black acrylic resin
  • Sliding back cover for easy access
  • Tube Life: 100+ hour range (depending on operating conditions)

Dimensions & Weight:

  • Dimensions: 37cm x 25.5cm x 39cm (L x W x H)
  • Weight: 7 kg

Made in Japan

 

e/m Power Supply

This versatile power supply offers multiple output options to suit various experimental needs. It provides three independent DC outputs (0–20V, 0–80V, 0–500V) along with a selectable AC output (1.1V to 6.6V), allowing simultaneous use of different voltages. It includes features such as overload protection, glass fuses at the input, and a spare fuse in the main input socket.

Specifications:

  • Approved under CSA (Canadian Standards Association) electrical standards
  • Output Ranges/Current:
    • 0–20V DC / 5A
    • 0–500V DC / 10mA
    • 0–80V DC / 10mA
    • 1.1 to 6.6V AC / 2A
  • Load: 0-100% with 100mV variations
  • Line regulation: 105-130V AC with 200mV variations
  • Protection: Earth-grounded, passes high voltage, burn, and leakage tests
  • Ripple and noise: 40mV rms
  • Power requirements: 110/120V AC, 60Hz and 220/240V AC, 50/60 Hz using voltage selector switch
  • Dimensions: 26cm x 24cm x 14cm

Made in India

 

Replacement Tube

  • Dimensions: 5" diameter, 12" total length
  • Filled with helium gas for optimal performance
  • Integrated phosphor scale for accurate measurements
  • Heater: 6.3V, 1A
  • Maximum Ratings:
    • Plate Voltage: 500V
    • Plate Current: 10mA
  • Tube Life: Over 100 hours, depending on usage conditions

Made in Japan