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Telephone controlled interrupter circuit

  • US 4,873,712 A
  • Filed: 05/19/1988
  • Issued: 10/10/1989
  • Est. Priority Date: 05/19/1988
  • Status: Expired due to Fees
First Claim
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1. In a vehicle equipped with a telephone, an audio system and a battery for powering the telephone and audio system, a circuit for interrupting the flow of power to the audio system in response to the activation of the telephone comprising, in combination;

  • monitor circuit means interposed between the battery and the telephone including first means for creating a first signal in response to a flow of power to the the telephone in excess of a predetermined power threshold and a second signal in response to a flow of power below said threshold; and

    circuit interrupter means connected to said monitor circuit means and interposed between the battery and the audio system, said circuit interrupter means including switching means responsive to said first signal for disconnecting the audio system from the battery and responsive to said second signal for connecting the audio system to the battery,whereby the audio system is disabled whenever the telephone operates and draws power in excess of the predetermined power threshold level.

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