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Jewell Tubechecker Pattern 540

Jewell Tubechecker Pattern 540; Weston Electrical (ID = 2548960) Equipment
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Jewell Tubechecker Pattern 540; Weston Electrical (ID = 2548960) Equipment
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Country:  United States of America (USA)
Manufacturer / Brand:  Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)
alternative name
 
Jewell
Year: 1931 ?? Category: Service- or Lab Equipment
Details
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker
Power out
from Radiomuseum.org Model: Jewell Tubechecker Pattern 540 - Weston Electrical Instrument
Notes

Tube filament voltages: 1.5 - 2 - 2.5 - 3 - 3.3 - 5 - 6.3 - 7.5 V.
Dry rectifier.
Short-circuit test.

External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)
Mentioned in Guida Pratica del Radioriparatore E. Costa 3a edizione 1943


All listed radios etc. from Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)
Here you find 179 models, 152 with images and 94 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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