One Electron magnetic products have been designed to fill the need for high-quality yet affordable audio transformers and chokes that are not normally available elsewhere. This is why we have concentrated a bit more on the esoteric types. If you are interested in having One Electron add a new product, contact us, but keep in mind we only mass-produce our products. One Electron does not do custom transformer designs. One Electron transformers and chokes are sold only through Antique Electronic Supply (retail) and CE Distribution (wholesale).

The datasheets for each type have specifications, application information, mechanical drawings, and suggested mounting holes.

Single-Ended Audio Output Transformers

The UBT series of single-ended output transformers are well-known for their clean, detailed sound, and broad bandwidth.

Type	Primary Impedance	Secondary Impedances	Max. DC Primary Current	Max. Power	Datasheet
UBT-1	1600 ohms	4, 8, 16 ohms	160 mA	15 W	UBT1_20.pdf
UBT-2	4800 ohms	4, 8, 16 ohms	110 mA	15 W	UBT2_10.pdf
UBT-3	3000 ohms	4, 8, 16 ohms	110 mA	15 W	UBT3_10.pdf

Plate Retard Coils/High Quality Audio Chokes

PRC-1, 2:

PRC-3:

The PRC series of audio chokes are intended for shunt-feed single-ended output stages, but are also useful where a high quality filter choke is needed. Each has two windings that can be connected in series or parallel.

Type	Connection	Inductance	Max. DC Current	Resistance (ohms)	Datasheet
PRC-1	Parallel	5.5 H	230 mA	32	PRC1_10.pdf
	Series	22 H	115 mA	128
PRC-2	Parallel	12 H	150 mA	76	PRC2_10.pdf
	Series	48 H	75 mA	304
PRC-3	N/A	225H	15 mA	1,850

Power Transformers

All One Electron power transformers are designed for critical audio applications and include an electrostatic shield between primary and secondary and a copper flux band to reduce stray magnetic fields. The international primary accomodates 100, 110, 120, 200, 220, 230 and 240 volt mains at 50 or 60 Hz.

Type	Secondary #1	Secondary #2	Secondary #3	Secondary #4	Datasheet
BFT-1B	770 VCT, 340 mA, with taps at 520 VCT	5 VCT, 4 A	6.3 VCT, 9.6A	6.3 V, 4 A	BFT1B_11.pdf

Note: for archival purposes, data on the earlier BFT-1 and BFT-1A transformers is given here: BFT1A_10.pdf.

One Electron transformers are distributed by Antique Electronic Supply. They can be reached at:

Antique Electronic Supply
6221 South Maple Avenue
Tempe, Arizona 85283 USA
Phone 1-480-820-5411
Fax 1-800-706-6789 (U.S. and Canada) or 1-480-820-4643
www.tubesandmore.com
e-mail info@tubesandmore.com