250 Power Amplifier
Thordarson Electric Mfg. Co. ; Chicago (IL)
- Country
- United States of America (USA)
- Manufacturer / Brand
- Thordarson Electric Mfg. Co. ; Chicago (IL)
- Year
- 1928 ?
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 102853
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- Audio-Amplification
- Wave bands
- - without
- Power type and voltage
- Alternating Current supply (AC) / 110-115 Volt
- Loudspeaker
- - This model requires external speaker(s).
- Material
- Various materials
- from Radiomuseum.org
- Model: 250 Power Amplifier - Thordarson Electric Mfg. Co. ;
- Shape
- Chassis only or for «building in»
- Notes
- Note: Riders schematic shows (2 times!) a UX227 which is not correct!. It must be a UY227.
- Price in first year of sale
- 78.00 $
- Circuit diagram reference
- Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
- Literature/Schematics (1)
- Chicago Salvage Stock Store catalogue, 1928?
- Author
- Model page created by Vitor Oliveira. See "Data change" for further contributors.
- Other Models
-
Here you find 64 models, 52 with images and 21 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Thordarson Electric Mfg. Co. ; Chicago (IL)