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Power & Audio Transformers - Parts Express
https://www.parts-express.com/battery-power/power-audio-transformers
Stocking Toroidal Power Transformers, Audio Output Transformers, Plate & Filament Power Transformers, and more. We use cookies to provide the best possible customer experience across this site, through third party ads and …
Classic Transformers - Hammond Mfg.
https://www.hammfg.com/electronics/transformers/classic
Classic Tube Output Audio Transformer Overview Design Guide For Rectifier Use Hammond Museum of Radio ¶ Power - High Voltage For General Amp Use High Voltage (Plate) & Filament - 32 VA to 454 VA 115 V / 125V Primary (60 Hz. Only) …
Power Transformers for Audio Equipment | audioXpress
https://audioxpress.com/article/Power-Transformers-for-Audio-Equipment
The toroidal transformer, or “toroid,” is a familiar sight inside high-end audio equipment. The toroid looks like a doughnut, with windings equally …
Audio Transformers
https://www.jensen-transformers.com/wp-content/uploads/2014/09/Audio-Transformers-Chapter.pdf
Audio transformers must utilize both high-permeability cores and the largest practical number of coil turns to create high primary inductance. Coil inductance increases as the square of the number of turns and in direct proportion to the permeability of the core and can be approximated using the formula: L = 3.2 N28 ì A / 10 R
Plate Transformer for sale | eBay
https://www.ebay.com/b/Plate-Transformer/67815/bn_7023231747
Antique Radio Forums • View topic - 201A Audio Transformer ...
https://antiqueradios.com/forums/viewtopic.php?t=379823
Generally around 10k. But you have not stated if the plate impedance is the result of a transformed impedance from a load on the secondary winding of an output transformer, like a speaker, as if often the case when the 201A in question is the audio output stage and the goal is maximum power transfer to a sound reproducer and, in this case the impedance seen by the …
Valve Amps: Output transformers - Lenard Audio
https://education.lenardaudio.com/en/14_valve_amps_5.html
The amplified audio from the 2 output valves, push pull is in opposite phase 180deg. 300VAC + 300VAC = 600V AC is across the primary winding. Depending on the tranny design there may be 2,000 turns of wire in the Primary and 90 turns for the Secondary winding. 22:1 step down ratio. 600V AC / 22 = 27V AC into an 8&Omega speaker is 90 Watts.
Vintage Transformers | Surplus Network
https://www.surplus.net/category/vintage-transformers-67815
Vintage Transformers | Surplus Network. USA. Triad | S-31A NoS Output Transformer. $249.00 USD. Triad | S-31A NoS Output Transformer. $249.00 USD. USA. 2 VINTAGE PAIR UTC O-16 AUDIO LINE... $249.00 USD.
Plate Modulation and AF Transformers
https://www.antiqueradios.com/forums/viewtopic.php?t=95305
We would typically use a 6AQ5 for the RF Final and a 6AQ5 for the audio modulator. We used to use a push/pull audio output transformer. You would connect the B+ (about 300 volts IIRC) to the center tap and connect the plate leads, one to the audio modulator tube plate and the other to the rf choke (2.5mh) feeding RF final tube plate.
Plate & Filament Combination Transformers
https://www.surplussales.com/class/inductor/plate-filament-combo.html
Merit & Thordarson Filament Transformer Primary 117 volts AC to multiple secondaries of 5 volts AC at 6 amps, 5 volts AC at 3 amps, 6.3 volts AC at 9.3 amps, a 51 volts AC at 10 milliamps, and 794 volts center tapped AC at 310 milliamps Mounts vertically. Attaches by feet to chassis type. Dimensions: 5" x 4-1/4" x 6"H.
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