Transistor Tester 520B

• Country
• United States of America (USA)

• Manufacturer / Brand
• B&K (Precision), Dynascan Corp., Cobra Electronics; Chicago, IL and Yorba Linda, CA

• Year
• 1974

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 180259

• • alternative name: B&K Manufacturing Company

• Picture
• Schematics

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

• Number of Transistors
• 18

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 117; 234 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 cm = 2 inch

• Power out
• 0.2 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Transistor Tester 520B - B&K Precision, Dynascan Corp.,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 205 x 180 x 110 mm / 8.1 x 7.1 x 4.3 inch

• Notes
• Also contains 6 IC's - 7400 series logic and operational amplifiers. Can be used with Silicon or Germanium transistors.

• Net weight (2.2 lb = 1 kg)
• 1.650 kg / 3 lb 10.1 oz (3.634 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Roger Brinkman. See "Data change" for further contributors.

• Other Models

• Here you find 113 models, 109 with images and 45 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from B&K (Precision), Dynascan Corp., Cobra Electronics; Chicago, IL and Yorba Linda, CA