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Tag Archives: BC547

  1. Micro Phone Amplifier circuit with BC549,BC547 August 1, 2011

    Posted in Amplifier, audio amplifier.

    No comments
  2. 6V to 12V Converter Circuit with BC547-BD679 January 18, 2010

    Posted in Power supply.

    3 comments
  3. Motorcycle Alarm Circuit and PCB for Prevent steal. June 16, 2009

    Posted in Security circuit, Sound Circuit.

    2 comments