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Single transistor class A audio amplifier

Discussion in 'Electronic Design' started by Nomen Nescio, Aug 22, 2011.

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  1. Nomen Nescio

    Nomen Nescio Guest


    I'm thinking about building my own audio power amplifier and the
    'novel' idea I came up with was to use one GIANT transistor biased in
    Class-A operation to do the current amplification (the voltage
    amplification will be done with OPA134 OpAmps).

    I'm thinking of using a BLF578XR MOSFET for the current amplification
    but I'm not sure if it's suitable for LF (audio) signals as it's
    designed for HF applications. The device is rated at 1200W (!) so it
    should be more than capable of handling the power requirements.

    Do you guys think the BLF578XR can be used for this purpose?
  2. Martin Brown

    Martin Brown Guest

    As a room heater - once you try to drive anything much more than a pair
    of headphones.

    Martin Brown
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