Wireless World Quality Amplifier

Wireless World; London

Data
Forum
Pictures
Collections

  • Year
  • 1934
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 340001

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 6
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 4 W (6 W max.)
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: Wireless World Quality Amplifier - Wireless World; London
  • Shape
  • Chassis only or for «building in»
  • Notes

  • Wireless World Quality Amplifier

    Walter Cocking (1907-1984) designed the Wireless World Quality Amplifier which he described in the 1934 editions of Wireless World, May 4, Page 302, May 11, Page 320, and May 18th, Page 336.

    His design used two stages, both triode push-pull with resistor-capacitor coupling providing 4 watts of audio for 3-4% distortion or 6 watts at 5%. This circuit used large bypass capacitors across the first push-pull stage cathode bias resistors.

    An additional one valve pre-stage provided additional amplification for a gramophone pickup was also described.

    In January 1946 of Wireless World, he described 4-, 8- & 12-watt versions.

    D. T. N. Williamson based his design on the 1934 & 1946 Walter Cocking circuits

  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum