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2.5" Headphone Amp Schematic - 19th April 2011
This is a designed for a DC powered headphone amplifier which will live inside a 2.5" Hard Drive enclosure.
This is only a first draft of the circuit and the amplifier stage only shows one audio channel.
I haven't fully decided on the op amps but I will most likely use the OPA2134 as an amplifier and buffer in the Amplifier Stage and then I will use a rail-rail op amp for the virtual ground in the Power Stage.
I think I'm going to design the circuit so that it will run off 5V usb, a 9V battery or a 12V wall plug.
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Uploaded on Apr 19, 2011
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