53results about How to "Avoid short circuit current" patented technology

Provided is a starter motor control circuit capable of easily preventing the induction of a short-circuit current due to a ground fault in the power source line of a starter motor, in which a high current flows. A key switch (13) is connected with a battery (11), and a starter motor starting signal line (19) of a starter motor (18) is connected through a starter relay (16) with a start (ST) of the key switch (13). A protect relay (22) is disposed in a battery line (21) between the battery (11) and the starter motor (18). A ground fault detecting line (24) for detecting the ground fault of the battery line (21) is disposed between the battery line (21) and a controller (14). The controller (14) has a function to restrict the connecting actions of the starter relay (16) and the protect relay (22) when the ground fault of the battery line 21 is detected by a ground fault line (24), even if the key switch (13) is changed to the start (ST).

The invention discloses a three dimension electrode reaction unit, which is characterized in that short flow of wastewater is avoided by arranging plate-type main electrodes placed in a parallel staggered manner, insulation baskets with holes and particle electrodes filled therein, aerator pipes, insulation frames of which the surfaces have fine wire screens, support pins and tees, so that the wastewater is more uniformly mixed and the retention time is simultaneously reduced; the aeration is more uniform, the degree of mixedness of the wastewater is deepened, and the mass transfer efficiency is greatly improved; the partitioning design of the particle electrodes can omit a discharge opening of a traditional device, so that loading and unloading of the particle electrodes are more convenient and cleaner, and the partitioning design of the particle electrodes also can block a short-circuit current difficult to overcome in a traditional three dimension electrode reaction unit, and economy, green and high efficiency are realized; a gas-liquid mixture can be removed while mixing and effluent discharging are performed; the occurrence of a siphon problem can be avoided; the height of the wastewater can be controlled through the length of a discharging tube, thus a basic parameter, namely the filling amount of the particle electrodes, is controlled, and a better treatment effect is further obtained.

The invention discloses a hybrid latch applied to a multi-power supply system on chip. The multi-power supply system on chip is a system in which a main power supply and a plurality of branch power supplies are integrated on a working chip for synergetic power supply, and a working chip comprises a plurality of working circuits. The hybrid latch comprises a two-input nor gate, a two-input nand gate, a pull-up P-channel metal oxide semiconductor (PMOS) transistor, a pull-down N-channel metal oxide semiconductor (NMOS) transistor and a phase inverter, wherein the input end and the output end ofthe nor gate are connected with the input end and the output end of the nand gate; the other input end of the nor gate is connected with the main power supply; the other end of the nand gate is connected with the branch power supplies; the pull-up PMOS transistor and the pull-down NMOS transistor are connected with the output ends of the nor gate and the nand gate respectively; and the output endof the nor gate is connected with the phase inverter, so that a signal is output to a part of working circuits. When the branch power supplies are instable after the main power supply is electrified and becomes stable quickly, a connected working circuit can be switched off and short-circuit current of the working circuit disappears, so that the battery consumption of the multi-power supply system on chip can be lowered.