Low resistance power distribution circuit

Published:2011/4/11 2:18:00 Author:may | Keyword: Low resistance, power distribution | From:SeekIC

The diagram is low resistance power distribution circuit, among, R is battery internal resistance, RL1~RLn is load of each branch path; F1~Fn is safety wire of each branch path; F0 is battery safety wire, up and down two bold lines state total cylinder manifold. Switch S short circuit, namely suppose if RL1 is short circuit, then before F1 burn out, at this time because battery internal resistance is more than F1 resistance, the voltage between N, R will drop to very low voltage, at the same time, because at this time the circuit in loop is basically depends on battery voltage and battery internal resistance, so short circuit current is enormous. When F1 burn out, because short current is high before F1 burn out, current change rate di/dt is also big, inductive kick LXdi/dt generated in equivalent inductance between N, R two points will form tremendous peak. At this time, voltage between N, R will first drop to zero in a moment, then generate a peak high voltage. These will have influenceon other branch path in the whole system which is abutting joint to one cylinder manifold. When low resistance power distribution, each branch load is not complete independence, and adopting multi-branch is go against of effective increase reliability of communications system.



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