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CV491

Information - Help 
ID = 30687
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Double Triode   Universal 
Identical to CV491 = B329
Similar Tubes
Other class quality (otherwise equal):
  12AU7 ; CV4003 ; ECC82 ; M8136
Heater different:
  7AU7

Base Noval, B9A
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC /
Description This spec refers to the 12AU7. Tubes are 100% tested for Gm, emission and other parameters.
Tapped heater also permits operation at 6.3V 0.3A. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
22 x 57 x mm / 0.87 x 2.24 x inch
Weight 14 g / 0.49 oz
Literature - - Manufacturers Literature   

 
cv49120philips.jpg
CV491
John Koster

 
cv491_so.png
CV491: ARRL Handbook 1972
Michael Schlör

 
cv491_1.png
CV491: Manufacturer's Literature
Emilio Ciardiello


Usage in Models 1= 1950??
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

CV491*Box
   

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