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505

Information - Help 
ID = 1352
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to 505 = RGN1304 = V1_Visseaux = V495 = G495 = DU4 = G450 = GT138 = R4B = RRR145
Similar Tubes
Normally replaceable-slightly different:
  EG410 ; EG4100 ; G140 ; G530 ; GL4/1E ; R0446 ; VR2_Castilla
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Mar.1929 : Funk Bastler 1929, Heft 9

Base Europe 3-Pin (B3, H) (Codex=Eo)
Filament Vf 4 Volts / If 1 Ampere / Direct / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
52 x 126 x 35 mm / 2.05 x 4.96 x 1.38 inch
Weight 43 g / 1.52 oz
Literature Taschenbuch zum Röhren-Codex 1948/49   
  505.png
  505: Internet
Miguel Angel Trujillo-Rodriguez
 
505_philips.jpg
505: Sammlung KHB
Karl - Heinz Bossan

 
16_33.png
505: Telefunken Werkstattbuch
Wolfgang Bauer

 
vv34_54_1.png
505: Valvo-Röhren-Daten 1934
Jacob Roschy


Usage in Models 4= 1929 ; 2= 1930?? ; 2= 1930 ; 1= 1931? ; 1= 1931 ; 1= 1933??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11


Forum contributions about this tube
505
Threads: 1 | Posts: 4
Hits: 3883     Replies: 3
Tube Philips 505 Cine Sonor (.33.)
Georges Van Campenhout
27.Mar.10
  1

Dear Radio friends,

 

I recently received a Philips Tube, model 505.

On top of this tube is written (see pictures)

 

PHILIPS

CINE SONOR

505

(.33.)

 

Inside, one can clearly distinguish two diode systems!

I wonder if this is the same tube??

 

 

Attachments

Jacob Roschy
27.Mar.10
  2

Hello Georges,

 

since this tube has merely 3 pins, it can't be anything else then a half-wave rectifier, although two diode systems are visible. It's very likely that you can find a parallel connection inside the tube. I have very little doubt about the correct designation 505.

This method was even used in some other cases: have a look at the second picture of the rectifier type 1803 (under “more”) - and you can see a 1803 which is made in the same way. The connection between the two anodes is clearly visible.

Best Regards, Jacob

 


 

Georges Van Campenhout
28.Mar.10
  3

Thank you, Jacob.

Indeed, looking carefully into the glass base shows that the two heaters are connected in series.

But what about the other marking: CINE SONOR?

Was this rectifier used only for cinema applications? Or is there another explanation?

 

Best regards

 

Georges

 

 

Georg Richter
28.Mar.10
  4

Philips Eindhoven had a "Cine Sonor" department for cinema equipment production (like Siemens had a separate company "Klangfilm").

It may be that Philips tubes which are labeled "Cine Sonor" was sold for a higher price for "dedicated application", similar to the "Klangfilm" tubes which was (often) standard tubes with a different numbering system to prevent cinema operators to use cheaper tubes for replacement. As far as I know the cinema operators had to sign a contract with the cinema equipment supplier.

I do not know if those "cinema" tubes has had a higher reliability or was selected for reaching the upper limits of the specifications.

If somebody can quote a contract between cinema equipment manufacturers and cinema operators, or can provide data sheets or an advertisement folder of Philips "Cine Sonor" equipment we will know more.

Best Regards

GR

 
505
End of forum contributions about this tube

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