Rectangular pulse generator with fast rise-time is an important instrument for calibrating high-voltage test probe in the pulsed power and high voltage field. Based on previous researches

a new compact film switch with low inductance was designed

which was used to develop a rectangular pulse generator according to the Blumlein double transmission line theory. The experimental results showed that the generator could produce regular and stable rectangular pulse with sub-nanosecond（<850 ps） risetime and amplitude in the range of 0.5～10 kV. A coaxial voltage divider with high impedance and a Y-type tee cable adapter was developed to fulfill on-line measuring of rectangular pulse waves. The divider was proved to have the same characteristics as a standard attenuator. Moreover

an automatic device was designed to change the film and a PLC was used to implement the integration of the rectangular pulse generator

which could facilitate the convenient operation of the generator.