• Year
  • 1945/1946
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 134083

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 452 kHz
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • AC/DC-set / 125/220 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: 209U -49 - Philips Belgium Belgien
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Dimensions (WHD)
  • 285 x 185 x 155 mm / 11.2 x 7.3 x 6.1 inch
  • Notes
  • Nachdem Widerstand R37 kurzgeschlossen ist, kann das Modell mit 110 / 200 V (AC/DC) gespeist werden.

    Siehe die Übersicht mit allen 209U-Modellen am Ende dieser Modellseite unter "Dokumenten zu diesem Modell".

  • Net weight (2.2 lb = 1 kg)
  • 3.3 kg / 7 lb 4.3 oz (7.269 lb)
  • Price in first year of sale
  • 3,150.00 Bfr.
  • Literature/Schematics (1)
  • -- Original-techn. papers.
  • Literature/Schematics (2)
  • Philips Apparatenblad
  Übersicht Philips 209U-Modelle 48 KB
  • Documents regarding this model
  • Author
  • Model page created by Wolfgang Bauer. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum

Forum contributions about this model: Philips Belgium: 209U -49

Threads: 1 | Posts: 6


Dear Radio Friends,

I have one Philips 209U.
To avoid an overvoltage (from the original 220V) I try to add one resistor to drop de difference from 220V to the actual voltage 230-240V.

But when I made the sum of all heater chain, pilot lamp and the mains droppers to find the actual heaters circuit value I got only
207,5V.




Heaters resistence:
R37=75  
R39=190 
R30=170  
      Sum= 435 ohms

Heaters current:
0,1 Amp  so,heaters voltage dropping is : 435x0,1= 43,5V
------------------------------------------------------------------------------------------
Tube heaters voltage:
UCH21= 20V
UCH21= 20V
UBL21 = 55V
UY1N  = 50V                                                                     Sum=
145V
-------------------------------------------------------------------------------
Pilot lamp:
                                                                                                   19V
-------------------------------------------------------------------------------------------                                       Sum of heaters circuit,pilot lamp and main droppers:145+43,5+19 =  207,5 V
-------------------------------------------------------------------------------------------
Well,  did I forget anything?

Do You know anything that helps me to understand why the final value is not 220V?

Thank You for your time
Best regards

Mário

Ps: Resistors Table is below

Mario Coelho, 25.Mar.06

Weitere Posts (6) zu diesem Thema.