• Year
  • 1977 ??
  • Category
  • Miscellaneous (Other, Various) - see notes
  • Radiomuseum.org ID
  • 361652

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Regavolt - Claude Lyons Limited;
  • Notes
  • The REGAVOLT Autotransformer.

    It is a highly efficient device for low-loss AC voltage control and is widely used for regulating parameters such as current, power, temperature, light intensity, and motor speed.

    Core Features & Operation

    • Continuously Adjustable Output: The output voltage is smoothly varied via a special brushgear that traverses a prepared track on the transformer winding, allowing for on-load voltage adjustments.
    • Compact & Efficient: REGAVOLT transformers are much smaller than resistive controllers of the same power rating and do not waste energy as heat, unlike resistive devices.
    • Waveform & Power Factor: Unlike solid-state controllers, REGAVOLT transformers maintain waveform purity and do not affect power factor.
    • DC Compatibility: While they cannot operate directly on DC, REGAVOLT transformers can provide variable DC voltage and current when used with rectifiers.

    Key Advantages

    • Good Regulation: Output voltage remains substantially independent of the load.
    • Smooth Control: Voltage is continuously adjustable from near zero up to (and sometimes above) the supply voltage.
    • High Efficiency: Modern design and advanced materials ensure very low losses under all load conditions.
    • Small Size: Much more compact than equivalent resistive controllers.
    • Linear Output: Output voltage varies linearly with the angle of the control knob.
    • Moderate Temperature Rise: No derating is required for ambient temperatures up to 45°C.
  • Mentioned in
  • -- Original prospect or advert (Electronic Engineering, number 12, 1 December 1977.)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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