• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1927/1927 ?

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 51265

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

• Power type and voltage
• Alternating Current supply (AC)

• from Radiomuseum.org
• Model: AB-623 - Philco, Philadelphia Stg. Batt

• Notes
• Same as type AB-663 except with special transformer and dextra large "b" current filter for use 25,30,40,50 or 60-cycle alternating current.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Other Models

• Here you find 4006 models, 2205 with images and 3656 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA