Transformer - One Electron, Output, 4800 Ω to 16/8/4 Ω

One Electron
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Transformer - One Electron, Output, 4800 Ω to 16/8/4 Ω

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The UBT-2 from One Electron is the same size and power (15 watts) as the UBT-1, but has a higher primary impedance suitable for single tubes running at B+ voltages of 400 to 500 volts, such as: 50, WE 300B,etc. It features a paper bobbin. The trade-off of a higher impedance transformer is worse bandwidth, but additional interleaving was added in the UBT-2 to extend the frequency range from 10 Hz to over 55 KHz (at 1 watt). The UBT-2 has also been successfully used as a choke load for shunt-feed output stages. Plate supply voltages over 600 volts are not recommended. 6.0 lbs.

Item ID:
One Electron
Product Measurements by Type
D.C. Primary Current, maximum110 mA
Item Height3.75 in.
Item Length2.85 in.
Item Width4.25 in.
Mounting Hole Center to Center A2.25 in.
Mounting Hole Center to Center B3 in.
Mounting Hole Diameter0.186 in.
Output Power, maximum13 W - 18 W
Primary Impedance4.8 kΩ
Primary Inductance29 H nominal @ 160 mA
Primary Resistance432 Ω nominal @ 25°C
Secondary Impedance4 Ω / 8 Ω / 16 Ω
Packaging Information
Packaging Dimensions5.75 in. × 4 in. × 3 in.
Weight (Packaging)5.607 lbs.

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PDF: Specification Sheet Specification Sheet255.69 KB

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