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WTB All American Audio Transformer - Antique Radio Forums
https://antiqueradios.com/forums/viewtopic.php?t=363354
Post subject: WTB All American Audio Transformer. Posted: Aug Wed 14, 2019 12:03 am. Member. Joined: Apr Wed 08, 2015 3:54 pm. Posts: 736. Location: North Providence, Rhode Island. I am looking for a All American Audio Transformer Type R-15 5:1 ratio. Would consider open transformers. Thanks.
All American IF Transformer
http://www.duanesradios.info/html/all_american_if_transformer.html
The All American brand IF transformers date from about May 1924, and, like many of the early transformers, they were designed to operate at 30 KC. The model R-120, investigated here, was the air-core filter transformer of the series. What is a filter transformer? The filter transformer is a sharp peaking or narrow bandpass transformer.
Rauland AF Transformer R-12, R-21, Radio part All American ...
https://www.radiomuseum.org/r/all_americ_rauland_af_transformer_r_12_r_21_r_13.html
Rauland AF Transformer R-12, R-21, R-13 Radio part All American Mohawk, Rauland Lyric; Chicago, IL, build 1922, 3 pictures, United States of America Devices Search Schematic Finder Schematics Requested Manufacturer Countries Audio New Pictures
"All American Five" Audio Output Transformer RDX-300B | …
https://www.ebay.com/itm/294650089399
Vintage Tube Output Transformer, 300B tube, AudioControl Car Audio Line Output Converters, JL Audio Line Output Converters Car Audio Signal Processors, American Bass Car Audio, Digital Audio Optical TOSLINK Output Cable TV Box, 4 AWG Output Gauge Car Audio & Video Distribution Blocks, TV, Video & Home Audio Signal Amplifiers & Filters 5 Outputs,
2 RAULAND ALL AMERICAN Audio Transformers R020 …
https://www.ebay.com/itm/363584925951
2 RAULAND ALL AMERICAN Audio Transformers R020 LM-0068-A 1230 70v C .5w 2W (CT)1W. Resume bidding, if the page does not update immediately. This amount includes applicable customs duties, taxes, brokerage and other fees. This amount is subject to change until you make payment. For additional information, see the Global Shipping Program terms ...
Rauland AF Transformer R-500 Radio part All American Mohawk,
https://www.radiomuseum.org/r/all_americ_rauland_af_transformer_r_500.html
Power out. from Radiomuseum.org. Model: Rauland AF Transformer R-500 - All American Mohawk, Rauland. Material. Metal case. Notes. Rauland Audio Frequency Transformer Type R-500. Price in first year of sale. 9.00 USD.
The All American Five. The Detector, Audio and AGC.
https://www.angelfire.com/electronic/funwithtubes/AA5-4.html
The bottom end of the IF transformer winding goes to the junction of a 2.2 megohm resistor, a 100 pico farad capacitor and a 220 k ohm resistor. The 100 pf capacitor charges up to near the peak value and holds almost all of it until the next cycle comes along. The capacitor can discharge fast enough to follow the changes due to audio.
The All American Five. The Audio Section.
http://www.angelfire.com/electronic/funwithtubes/AA5-5.html
The output of a power amplifier is measured in watts. In the case of an All American 5 the output power isn't much more than one watt. This is called a single ended amplifier to distinguish it from a push-pull amplifier. The transformer between the plate of the output tube and the speaker is to match the impedance. It is a step down transformer.
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