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22 Watt Audio Amplifier

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  • Nicolae Sfetcu
    22 Watt Audio Amplifier ... The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for
    Message 1 of 2 , Jul 30, 2001

      22 Watt Audio Amplifier


      The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround sound or home theater system, or as an amp for computer speakers. The circuit is quite compact and uses only about 60 watts. The circuit is not mine, it came from Popular Electronics.

      Schematic

      This is the schematic of the 22 Watt Amp

      Parts


      Part
      Total Qty.
      Description
      Substitutions
      R1139K 1/4 Watt Resistor
      C1,C2210uf 25V Electrolytic Capacitor
      C31100uf 25V Electrolytic Capacitor
      C4147uf 25V Electrolytic Capacitor
      C510.1uf 25V Ceramic Capacitor
      C612200uf 25V Electrolytic Capacitor
      U11TDA1554 Two Channel Audio Amp Chip
      MISC1Heatsink For U1, Binding Posts (For Output), RCA Jacks (For Input), Wire, Board

      Notes

      1. The circuit works best with 4 ohm speakers, but 8 ohm units will do.

      2. The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed.

      3. The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat.

      4. Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.

    • Nicolae Sfetcu
      22 Watt Audio Amplifier ... The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for
      Message 2 of 2 , Sep 16, 2001

        22 Watt Audio Amplifier


        The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround sound or home theater system, or as an amp for computer speakers. The circuit is quite compact and uses only about 60 watts. The circuit is not mine, it came from Popular Electronics.

        Schematic

        This is the schematic of the 22 Watt Amp

        Parts


        Part
        Total Qty.
        Description
        Substitutions
        R1139K 1/4 Watt Resistor
        C1,C2210uf 25V Electrolytic Capacitor
        C31100uf 25V Electrolytic Capacitor
        C4147uf 25V Electrolytic Capacitor
        C510.1uf 25V Ceramic Capacitor
        C612200uf 25V Electrolytic Capacitor
        U11TDA1554 Two Channel Audio Amp Chip
        MISC1Heatsink For U1, Binding Posts (For Output), RCA Jacks (For Input), Wire, Board

        Notes

        1. The circuit works best with 4 ohm speakers, but 8 ohm units will do.

        2. The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed.

        3. The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat.

        4. Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.

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