Amplifier Interference Issue


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  1. #6
    Join Date
    Aug 2003
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    Is that a rectifier diode in the plugpack power supply ?

    Hey mtripoli,
    How would you like to make a PCB for this:


    Give me a bit and I'll whip up a schematic with the transistors the wrong way round
    Nah just kidding

    I'm not actually using the 7805s at the moment because I have a 2 amp 5 Volt regulated wall supply.
    The plugpack is a charger for a Sony PSP, and I would have thought the caps would be in that.

    So it's a talking clock with a display now, but I also want to add an FM radio that I'm making with a Philips FM radio IC tonight.

    There should be some circuit to switch the input of the amplifier chip
    between the pic and the radio chip.
    Should I use signal transistors?
    Last edited by Art; - 3rd March 2010 at 09:38.

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