Electric circuit for cutting off an electric power supply having transistors and fuses

Electric circuit for cutting off an electric power supply having transistors and fuses

  • CN 104,583,074 A
  • Filed: 06/21/2013
  • Published: 04/29/2015
  • Est. Priority Date: 06/21/2012
  • Status: Active Grant
First Claim
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1. one kind is suitable for the circuit of the supply of electric power cutting off electrical equipment (2), described circuit receives at least two discrete electric signals (x1, x2) as input, its value determines the supply of electric power of electrical equipment (2), if electrical equipment has supply of electric power, then discrete electric signal has high state ('"'"' 1 '"'"')-described circuit comprises voltage source (+Vpp);

  • -the first cutting unit (Uc1) is connected between electrical equipment (2) and voltage source (+Vpp), and the first cutting unit (Uc1) has open mode based on discrete electric signal (x1, x2) or closure state;

    -the second cutting unit (Uc2) is connected to crosspoint and the earth connection of electrical equipment and the first cutting unit (Uc1), if discrete electric signal (x1, x2) equal state is in, then the second cutting unit (Uc2) has the extra condition to the first cutting unit, second cutting unit (Uc2) comprises at least two the switch (Q2L be arranged in parallel, Q2R), described parallel circuits is connected to power supply, the state of each of two switches is discrete electric signal (x1, x2) function, at discrete electric signal (x1, when x2) being in equal state, switch is in equal state, described first cutting unit and described second cutting unit are controlled to when there are differences between discrete electric signal and produce short circuit, at least two switches of described second cutting unit have state different each other, to produce described short circuit.

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