The electrical properties of the PTC materials were investigated by current impacting.

Test of densification effect of surge current on compacted iron powder;

Analysis of surge current due to closing loop in distribution grid;

The mathematical model of closing loop operation is established and a method for surge current calculation based on Thevenin s equivalent is proposed in this paper.

This article describes that rush current does harm to xenon lamp from its structure and working principal.

This paper proposes a novel method of suppressing the inrush current of transformers.

Article describes the principle of inrush current.

A fast transfer criterion is presented,using the product of the initial frequency difference of the bus residual voltage after outage and the dead beat voltage RMS(Root Mean Square) between the standby power supply voltage and the bus residual voltage to predict the impulse current.

From the view of point of factors that influence measuring accuracy of impulse current system,the many problems which include the selection of voltage reference end,connecting manner of converting apparatus and self electromagnetic interference of impulse current system are studied.

Starting from the circuit theory, the RLC impulse current cir(?)it for non-linear resistances are studied.

The paper puts forward to a producing impact large current method using low energy power supply and measure impact current through introduced loop.

Aim This paper is to provide a measurement method of impact current and verify the accuracy of the experimental model.

When the author tests the property of the normal aviation motor by using RTTB-3, she discovers that the design of RTTB- 3 neglects the effect of the impact current when it is loaded, which leads to the errors in the surveyed motor proprety data graph recorded.