The application of CF series thyristor triggers in machine tools electric;

ZX7 series thyristor inverter welding power source fault phenomena and solutions;

Study on ancillary rectifier circuit parallelled in single phase thyristor rectifier welder;

Phase sequence self-adaption digital controller for SCR based on DSP;

Rigid synchronous control circuit of SCR control welding source without synchronous transformer;

New synchronization and trigger circuit of SCR CO_2 welding machine;

Based on the application of transistor temperature control box for electrolytic aluminium foundery blending holding furnace in Baotou Aluminium Industry Group Co.

A small trigger can trigger a large capacity transistor by the transistor leakage trigger mode.

We have a lot of parameters to choose transistor,but when we use it in controlled rectification,the specified electric current and the specified v oltage are the principal ones.

A novel stabilized power source with thyristors and controlled by monolithic computer is proposed.

This paper presents a new structure of thyristors with a thin emitting region based on the pin diode model for thyristors.

For various thyristors,the extracted parameters fit both of the above mentioned curves within an error of 8% over a 1:100 ratio of di/dt at zero cur- rent and over a 1:4 ratio of I

The principle of the first overcurrent test equipment for FACTS and HVDC thyristor valve in China is introduced.

Modern thyristor valves for HVDC are of high power rating and difficult to be tested in a conventional back-to-back test circuit.

Development of HVDC thyristor valves and HVDC transmission technologies in the last two decades makes the electric power transmission by HVDC more economical and reliable nowadays.