The circuit for being used to cut off power supply with transistor and fuse

The circuit for being used to cut off power supply with transistor and fuse

  • CN 104,583,074 B
  • Filed: 06/21/2013
  • Issued: 05/03/2019
  • Est. Priority Date: 06/21/2012
  • Status: Active Grant
First Claim
Patent Images

1. one kind is suitable for cutting off the circuit of the power supply of electrical equipment (2), the circuit receives as input at least twoA discrete Electrical signal (x1, x2), the value of at least two discrete Electrical signal (x1, x2) determine the electricity of electrical equipment (2)Power supply, if electrical equipment has power supply, discrete Electrical signal has high state ('"'"' 1 '"'"'),The circuit includes voltage source (+Vpp);

  • - the first cutting unit (Uc1) is connected between electrical equipment (2) and voltage source (+Vpp), first cutting unit(Uc1) it receives two discrete Electrical signals (x1, x2) to be combined as inputting, first cutting unit (Uc1) has is based onThe opening state or closed state of the combination of two discrete Electrical signals (x1, x2),;

    - the second cutting unit (Uc2) is connected to crosspoint and the ground line of electrical equipment and the first cutting unit (Uc1), instituteIt states the described two discrete Electrical signals (x1, x2) of the second cutting unit (Uc2) reception and is used as input, and if discrete electrical letterNumber (x1, x2) is in same state, then;

    When first cutting unit has opening state, second cutting unit (Uc2) has closed state,When first cutting unit has closed state, second cutting unit (Uc2) has opening state;

    Second cutting unit (Uc2) include parallel arrangement at least two switch (Q2L, Q2R), it is described at least two switch it is everyOne state both depends on discrete Electrical signal (x1, x2), when discrete Electrical signal (x1, x2) is in same state, opensIt closes and is in same state, first cutting unit and the second cutting unit control are formed between discrete Electrical signal and existThe short circuit between the voltage source (+Vpp) and the ground line is generated in the case where difference, second cutting unit is at leastTwo switches have state different each other, to generate the short circuit, and in the first cutting unit (Uc1) failureIn the case of, second cutting unit leads to the short circuit, and in the case where the failure, first cutting unit should be openedBut it is closed.

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