One PAIR of OT15SE-HF-2K5UL for SE HiFi projects
USA built version installed in Black Vertical covers.
This is a new 15VA Single-Ended Tube Output transformer for tube amplifier circuit applications (30Hz to 20KHz) using various single ended Power Tubes. This version of the transformer is built in USA to an MPS custom design spec & is suitable for many 8 to 15VA Single-Ended HiFi amp circuits looking for a solid USA built output transformer at a reasonable price. We are using audio grade 29M6 laminations in an E-I 100 x1.5IN gapped core structure with bobbin wound construction. It's an 5-section interleaved winding S-P-S-P-S with 2K5 Ohm input and 4 & 8 ohm output impedances in perfect layer windings. There is a 40% UL tap (wrt B+) which you can tie off if not needed. It's surface mounts by a 4-hole pattern at 2.0in x 2.25in
This is ideally suited to SE circuits looking for up to 65mADC current handling
CONSTRUCTION DETAILS-
Laminations: 29M6 x EI-100 x 1.5IN Butt stack with gap paper
Bobbin: EI-100 1 x 1.5in Nylon Glass Reinforced UL94V-0
Winding: Interleaved, perfect layer output windings
Magnet Wire: MW80 155C or higher
Varnish-Class B 130C
Tapes: 3M #56 & 3M 44 tapes
Cover: Black Powder Coated VC100 style covers
Weight: 3.0 Lbs EA
PERFORMANCE
Operating Voltage 500Vdc
Maximum Output Power: up to 15VA (65mADC)
Designed Operating Frequency (+/-3dB): 30 to 20000 Hz
HiPot Test Ratings 1000Vac minimum
Input Impedance B+ to Plate: 2500 Ohms
Output Impedances: 4,8 Ohms
Application: 4 to 15 Watt SE Amplifiers
Dimension- per drawing
Mounting- 4 holes at 2.0"W x 2.25"L
Shipping weight will be 7Lb per Pair. Use shipping calculator below to estimate cost to your location. Will ship Worldwide.
Note- US Domestic shipments will be sent via USPS or FEDEX
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