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please help me with a filter circuit.

Discussion in 'General Electronics' started by abhilsah j, Jun 13, 2004.

  1. abhilsah j

    abhilsah j Guest

    I am trying to develop an intercom that sends out audio signals of 4Kz
    bandwidth (three different channels through the same cable/wire.
    (Prior to making that, I am actually trying to simulate that on a
    computer so as to reduce the cost). I have double side band
    suppressed carrier (DSSC) band modulator circuit (MC/LC 1496
    modulator), a summer circuit and single side band suppressed carrier
    (SSSC) demodulator circuit. But I don’t have the filter circuit
    that converts double side band signal to single side band and also I
    also don’t have the circuit for filtering out different channels
    from the wire. (Since it’s in a simulator, I have quite wide
    range of carrier frequencies by simply changing the parameters).
    Would you please help me with a filter circuit (4Kz) bandwidth and do
    tell me if i am missing anything.
     
  2. Dbowey

    Dbowey Guest

    meetabhilashj posted:

    << I am trying to develop an intercom that sends out audio signals of 4Kz
    bandwidth (three different channels through the same cable/wire.
    (Prior to making that, I am actually trying to simulate that on a
    computer so as to reduce the cost). I have double side band
    suppressed carrier (DSSC) band modulator circuit (MC/LC 1496
    modulator), a summer circuit and single side band suppressed carrier
    (SSSC) demodulator circuit. But I don’t have the filter circuit
    that converts double side band signal to single side band and also I
    also don’t have the circuit for filtering out different channels
    from the wire. (Since it’s in a simulator, I have quite wide
    range of carrier frequencies by simply changing the parameters).
    Would you please help me with a filter circuit (4Kz) bandwidth and do
    tell me if i am missing anything.
    Before we get into your questions, would you explain what you intend for the
    carrier injection at the receivers?

    Don
     
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