• Country
• United States of America (USA)

• Manufacturer / Brand
• Oklahoma Aerotronics Inc.; Hartshorne (OK)

• Year
• 2000 ??

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 273285

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

• Number of Transistors
• 5

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Line plus power jack, mostly with battery or storage battery / 50-60Hz, 230VAC or 50-60Hz/400Hz, 115VAC and 25.2 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: PP-2953C/U - Oklahoma Aerotronics Inc.;

• Shape
• Tablemodel, with any shape - general.

• Notes

• The PP-2953C/U is an AC operated DC power supply that provides a regulated 22.7 to 27.7 VDC output from a 50-60Hz, 230V or 50-60Hz/400Hz, 115V input voltage source.  It has a sense circuit that switches the output to a 25.2VDC battery backup input when the AC input voltage falls below a certain value.

• Author
• Model page created by Dag Schöber. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Oklahoma Aerotronics Inc.; Hartshorne (OK)