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ECH2_Tungsram

Information - Help 
ID = 74144
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Identical to ECH2_Tungsram
Similar Tubes
Heater different:
  CCH2_Tungsram
Heater and shape different:
  ECH2
Multiple differences or of other kind:
  ECH4

Base Europe side contact base P (P8A) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.35 Ampere / Indirect / Parallel, (AC/DC)
Description

The heater current of the Tungsram ECH2 is only 0.35A compared to 0.95A of the original Mullard ECH2, which points to a considerable modification of the tube.

Since the operating data of the ECH2 differ only insignificantly from those of the ECH4, one can assume that the system of the ECH4 has been used here, to which the specified heater current 0.35A also fits.

The big bulb was probably chosen to achieve the height of the original Philips ECH2.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
50 x 122 x mm / 1.97 x 4.80 x inch
 
ech2_696.jpg
ECH2_Tungsram: Collection JR
Jacob Roschy

 
ech2_sock~~1.png
ECH2_Tungsram: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

 
ech2_spec_2~~1.png
ECH2_Tungsram: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector



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