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AR-3

AR-3 ; Electrical Research (ID = 634618) Radio
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AR-3 ; Electrical Research (ID = 634618) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  Electrical Research Laboratories Inc. (Erla); Chicago, Illinois
Year: 1930 ? Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: 24 24 24 27 27 45 45 80
Main principle TRF without regeneration; Screengrid 1926-1935
Tuned circuits 4 AM circuit(s)
Details
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: AR-3 - Electrical Research
Notes 4-gang condenser; phono input; push-pull af output stage.
The Rider´s schematic shows type "27" tubes instead of type "24" screen grid tubes (probably an early version of the 224 model).
This model is a combination of the "R3" rf-unit and the "A3" af-unit.
External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)


All listed radios etc. from Electrical Research Laboratories Inc. (Erla); Chicago, Illinois
Here you find 131 models, 45 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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