Antique Radio Interstage Transformer

Top has the GE logo and numbers 62235 and 110. Homebrew Antique Tube Radio Interstage Transformer no maker mark type model or anything else to give more detail.

Allegrosound Audio Note Conqueror Set Stereo Amplifier Audio Amplifier Stereo

I suggest 01 mfd at 400 volts.

Antique radio interstage transformer. - 15 Khz - 1db max. Designed for driver use ONLY in single ended tube output amplifiers. Antique Tube Radio Part - Homebrew Interstage Transformer - Rare TT008 eBay.

The transformer was inserted into a brass tube that had a copper mounting plate soldered to it. It is in pretty decent antique radio part condition as is shown in the photos it. This job is finished and the transformers still retain their original appearance.

Designed for general purpose or replacement use in push-pull or phase inverter tube driver circuits. My standard rewind is a primary of 4000 turns and a secondary of 12000 turns both. 601A radio of mid 1920s vintage and this gave me the opportunity to photograph the process.

Transformer - Audio Interstage Coil Assembly for P-T156. The transformer coupling can usually be replaced by capacitorresistor coupling often without any loss of performance. It is the primary winding of these audio interstage transformers which usually goes bad.

The primary of the audio interstage transformer always has DC voltage across it which feeds the plate of the Type 27 audio amplifier tube. Modified transformers now reattached to the chassis. Skip to main content.

It is in pretty decent antique radio part condition as is shown in the photos it does show wear and tear from age and use. Should not be used for single ended applications. Talk about your homemade tube sets in this forum.

Radios like Opa used to build in his kitchen. The final turns ratio is 35 to 1. Worth trying to find or rebuild one of these 31AITs.

Transformer - Hammond 145 Series Audio Chassis Mount. Transformer - Hammond Audio Broadcast Quality 800A Series. They have no gap for DC bias current present in SE mode.

Open style with minimum 5 long primary leads. These units replace coupling capacitor circuits for improved sound. Closed style with minimum 8 long leads.

All have dual independent windings on the same core. Antique Tube Radio Part - Homebrew Interstage Transformer - Rare. I have yet to try it in an actual radio if successful the second transformer will be made to complete the restoration.

Its important to remember that when theyre talking about audio interstage transformers and refer to 31 or 101 the primary side is the low side and the secondary is the high side. When tested in a radio they performed as an audio interstage transformer and gave results very similar to that of a Hammond 124A transformer. Transformer - Hammond 146 Series Audio Chassis Mount.

Some rust and scratches. This is my homebrew method of rewinding 1920s audio transformers and those with sophisticated coil winding equipment or more experience may have other recommendations. Transformer - Hammond Tube Driver Interstage.

See CNE 11P-JACK for mating connector. All models use bifilar wound windings for exceptional coupling and bandwidth. Antique Tube Radio Part - Homebrew Interstage Transformer - Rare.

I have used several in various radios with success. And as with the first audio transformer I am aware that I could use an Antique Electronic Supply A53-C interstage transformer to replace the second audio transformer. 2 x 2-34 x 3H.

Homebrew Antique Tube Radio Interstage Transformer no maker mark type model or anything else to give more detail. Equivalent to Stancor A53-C. Transformer - Audio Interstage 10 mA.

Please contact me with your shipping address quantity desired and I will provide a PayPal invoice. Transformer - Hammond Audio Broadcast Quality 850A Series. 10 mA Impedance Primary to Secondary Ohms.

I make no claim that these transformers would be. 1299 to 3999 5 offers - Buy Radio 231-A Audio Transformers General 1920S. Minimum frequency response 150 Hz.

Primary resistance is 0839K ohms and the secondary resistance is 470K ohms. In the case of Audio Interstage Transformers connect a capacitor from the plate of the driving tube to the driven tube grid The value is not critical. Vintage GE Audio Interstage Transformer 1920s eBay.

1 - 4 4000 Ohms. It is in pretty decent antique radio part condition as is shown in the photos it. I should point out that my main interest is 1920s battery radios and that they are very forgiving.

Those interested in replacing the windings of a open transformer can get an idea of the procedure I use in the restoration of a Radiola III transformer. The CVRS is a non-profit society run solely by volunteers. Transformer - Hammond Audio Interstage 5 Watt.

Proceeds from fund-raising activities and membership fees are used to produce and distribute the publication Canadian Vintage Radios and to pro-mote this great hobby. About Us The Canadian Vintage Radio Society is dedicated to the preservation restoration collection and enjoyment of antique radios and related items. The interstage transformers are used for passive voltage magnification gain of AC signals they also serve the purpose of DC isolation between tube stages and due to their bandwidth frequency response only being in the audio frequency spectrum they also act as a.

Hard to find antique Hollywood Transformer Hollytran Interstage transformer for vacuum tube amplifiers. 3 - 4 3910 Ohms. Then bypass the open winding with a resistor.

Center tapped secondary may be used for push-pull gridsSpecifications Max.

Pin On Schemy