• Country
• United States of America (USA)

• Manufacturer / Brand
• Sears, Roebuck & Co.; Chicago (IL)

• Year
• 1949 ??

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 56901

• • Brand: Silvertone

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

• Number of Transistors

• Semiconductors
• Selenium-Rectifier Selenium-Rectifier

• Wave bands
• - without

• Details
• Power: B-Battery Eliminator

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Silvertone Powr Shiftr 6686 Ch= 139.151 - Sears, Roebuck & Co.; Chicago

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 6.75 x 4.5 x 2 inch / 171 x 114 x 51 mm

• Notes
• The Sears Silvertone 6686 is an AC to DC power supply that generates the "A" 1.5VDC and "B" 90VDC voltages for battery operated radio's. Uses Qty(2) selenium rectifiers. Has plug that configures the unit "A" output for use with either 4/5 tube or 6 tube radio's.
  
  "A" Output as follows for 4/5 tube configuration:
  1.5V at 200mA
  1.35V at 250mA
  
  "A" Output as follows for 6 tube configuration:
  1.55V at 300mA
  1.35V at 350mA
  
  "B" Output as follows:
  128V at 0mA
  95V at 8.5mA
  85V at 13mA

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 17 = 1948 and before

• Literature/Schematics (1)
• Rider's Perpetual, Volume 17 = covering 1947 (Sears Page 17-1)

• Other Models

• Here you find 5464 models, 3199 with images and 4169 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)