radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

Flash-O-Graph

Information - Help 
ID = 37070
       
 
   
Tube type:  Glow Indicator (Neon)   Indication 
Identical to Flash-O-Graph
Similar Tubes
Multiple differences or of other kind:
  Tonebeam ; Tune-A-Lite

Filament No heater
Description The "Flas-O-Graph" is a Neon Indicator tube with two electodes which was replacing the "Shadowgraph" (Philco) type, the bulbs (with a special transformer) or meters for tuning correctly. The Flash-O-Graph is employed e.g. in Fada consoles in the early 1930's. The principle of neon indicators has been made also with 3 electrodes and a 4 electrode neon indicator allowed even "Silent Tuning".

See also other kind of indicators for early superhets like the Tune-A-Lite (Atwater Kent) from the inventor/manufacturer Duovac. Other radiomanufacturers had their own name for the neon indicator like this "Flash-O-Graph". Examples: Tonebeam (Atwater Kent 96-F), Tuneon (Philips), "Tuning Flasher" (Sears) or other principles like Viso-Glo, the VG-1 for Sparks Withington (Sparton) before the Magic-Eye. 
 
dscf5436.jpg
Flash-O-Graph: foto fatta alla valvola montata sulla mia radio fada
Cristiano Fico

 
flash_o_graph_fada48.png
Flash-O-Graph: Advertisement September 1931
Ernst Erb


Usage in Models 3= 1931? ; 11= 1932 ; 1= 1933?? ; 3= 1933? ; 3= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):21


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg