Vacuum Tube Voltmeter (VTVM) 266

Simpson Electric Co.; Chicago, IL - Lac du Flambeau, WI

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  • Year
  • 1946/1947
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 218375

 Technical Specifications

  • Number of Tubes
  • 3
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / AC: 105-125 & DC: RMBZ4 Battery 1.34 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Vacuum Tube Voltmeter 266 - Simpson Electric Co.; Chicago,
  • Shape
  • Tablemodel, slant panel.
  • Dimensions (WHD)
  • 8.5 x 9.5 x 8.5 inch / 216 x 241 x 216 mm
  • Notes

  • Wide range vacuum tube voltmeter for TV, AM and FM with 4.5" meter.

    • offers a 1 volt range with full scale deflection to measure low RF voltages
    • zero center switch for all DC voltage ranges for discriminator circuit alignment
    • special probe with low input capacitance of ca. 4 mmf for checking RF voltages
    • DC volt input resistance 50 - 200 megohms
    • AC volt input impedance at 60 cycles approx 10 megohms
    • filtered DC input circuit

    Measuring ranges:

    Volts DC and AC: 0 - 1, 5, 10, 50, 100, 350, 500, 1000, 5000
    Milliamperes DC: 0 - 1, 5, 10, 50, 100, 250, 500
    Amperes DC: 0 - 10
    Ohms: 0 - 1000, 10K, 100K, 1M, 10M, 100M, 1000M

    Price in 1951, dealer's net, including leads and AC probe.
    Optional 20,000 DC probe for Television Testing, same, $11.35

  • Net weight (2.2 lb = 1 kg)
  • 10.25 lb (10 lb 4 oz) / 4.654 kg
  • Price in first year of sale
  • 125.40 $
  • Mentioned in
  • - - Manufacturers Literature (Catalog 1951)
  • Literature/Schematics (1)
  • Simpson, Model 266, Vacuum Tube Voltmeter, Manual, Form 51548
  usa_Simpson_Model_266 2084 KB
  • Documents regarding this model
  • Author
  • Model page created by Heiko zur Mühlen. See "Data change" for further contributors.

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