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        LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA

        Lundahl LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA

        €209,95

        2 In stock

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        Lundahl LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA

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        Brand: Lundahl
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        LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA
        € 173,51€ 209,95 2 In stock
        € 209,95
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        LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA

        Product description Lundahl LL2777B Output Transformer

        The Lundahl LL2777B is a compact single-ended tube amplifier output transformer with 50% UL tap, configurable 5 and 8 ohm secondary connections, and support for up to 150 mA primary DC current.

         

        Highlights of the Lundahl LL2777B

        • Small-size output transformer for single-ended tube amplifiers
        • 3.5 kΩ primary for 5 and 8 ohm speaker loads
        • 50% UL tap from B+ for ultra-linear operation
        • Maximum recommended primary DC current of 150 mA
        • 15 Hz to 45 kHz frequency response at +0 / -2 dB
        • High-quality grain-oriented silicon steel C-core

         

        Product details Lundahl LL2777B

        Lundahl LL2777B Output Transformer for Single-Ended Tube Amplifiers 3.5 kΩ to 5 and 8 Ohms 150 mA

         

        The Lundahl LL2777B is designed as a compact power output transformer for single-ended tube amplifiers. It provides a 3.5 kΩ primary configuration for 5 ohm operation and a 3.4 kΩ primary configuration for 8 ohm operation, with turns ratios of 26:1 and 20:1 respectively in application.

         

        A 50% UL tap from B+ supports ultra-linear circuit designs, while the transformer can be gapped for different DC standing currents. The maximum recommended primary DC current through the windings is 150 mA, with heat dissipation specified at 4 W.

         

        The LL2777B uses Lundahl’s high-quality grain-oriented silicon steel C-core and is built for reliable audio performance in compact tube amplifier projects. It reaches a frequency response of 15 Hz to 45 kHz at +0 / -2 dB with a 1 kΩ source and 8 ohm load, while signal loss across the transformer is 1 dB.

         

        For practical integration among amplifier accessories and custom audio builds, the LL2777B includes 4 x M3 mounting holes and weighs 0.75 kg. It offers 4 kV isolation between primary and secondary windings and 2 kV isolation between windings and core, with a maximum primary signal voltage of 110 V RMS at 30 Hz.

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        Specifications

        Article number
        LL2777B-150
        EAN
        9508486724362
        Transformer Type
        Single-ended tube amplifier output transformer
        Primary Impedance
        3500 / 3400 Ω
        Secundary Impedance
        5 / 8 Ω
        Power Handling
        3.5 Watt
        Core Material
        Grain-oriented silicon steel
        Core Type
        C-core
        Inductance
        60 H
        Max Output Voltage
        110 V
        Turns Ratio
        26:1 / 20:1
        Frequency Response
        15-45.000 Hz
        # Mounting holes
        4
        Dimensions (L x B x H)
        61 x 73 x 53 mm

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        LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA
        € 173,51
        € 209,95
        LL2777B Output Transformer for Tube Amplifiers Single Ended 150mA
        2 In stock
        Add to cart
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