• Country
• Netherlands

• Manufacturer / Brand
• Philips; Eindhoven (tubes international!); Miniwatt

• Year
• 1927/1928

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 163361

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

• Number of Tubes
• 1

• Valves / Tubes
• 2504

• Wave bands
• - without

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: 2503 - Philips; Eindhoven tubes

• Shape
• Chassis only or for «building in»

• Notes
• Netzteil 2503 für die Heizspannungen (=1 V und ~2,5 V) und Gittervorspannungen (-1,5 V und -16 V) zum Einbau im Netzanschlussempfänger 2501.

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 5233 models, 4365 with images and 3445 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt