KA6021 Helmholtz Coils

Regular price $925.00
Regular price Sale $1,023.00 Sale price $925.00

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Helmholtz Coils

KA6021 Helmholtz Coils These coils can be used to produce a highly uniform magnetic field. Two single coils of 124 turns each, 29.5 cm in diameter, are arranged parallel to each other and 150 mm apart. The coils are wound with varnished copper wire, 1.5 mm in diameter. Description Maximum allowable current is 5 A. The magnetic induction is B = 37 x 10-4 T at this current. The individual coils can be connected in series or parallel. Each coil has a resistance of 1.2 Ohms. The narrow electron beam tube is placed within the Helmholtz coils to measure e/m. The coils require 0 to 12 VDC, properly filtered with a 4 A load capacity. KA6021


  • Coil diameter: 300 mm approx.
  • Coil spacing: 150 mm
  • Number of turns per coil: 124
  • Enamelled copper wire thickness: 1.5 mm
  • DC resistance: 1.2 Ohms each
  • Maximum coil current: 5 A
  • Maximum coil voltage: 6 V
  • Maximum flux density at 5 A: 3.7 mT