DETERMINATION OF THE PARAMETERS OF DIODES OF RECTIFICATION CIRCUITS WHEN THEIR OPERATION FROM A NETWORK TRANSFORMER AT A GIVEN LOAD CURRENT

Vorzhev Vladimir Borisovich, Trints Dmitry Viktorovich, Ksenia Fedorovna Kalmykova, Romanov Dmitry Leonidovich

The article considers the possibility of measuring the parameters of rectifier circuit diodes during their operation from a network transformer loaded with active resistance, the value of which corresponds to a given (nominal) load current for the rectifier circuit under study, which makes it possible to obtain a device for measuring the parameters of rectifier circuit diodes when they are use in typical power supplies. The paper presents a mathematical justification for the possibility of measuring the parameters of diodes by isolating the fundamental harmonic of the variable voltage component. On the basis of the proposed mathematical model, an electrical block diagram of the device is obtained, which is capable of providing the correct conditions for measuring the above-mentioned quantities. The adequacy of the obtained results was verified using the Mathcad software package, as well as electronic models of the main units of the device. The results obtained in the work can be used to design a device for measuring the parameters of diodes in rectifier circuits, as well as to diagnose standard blocks and assemblies of industrial electronics power supplies.

Keywords:testing of blocks and assemblies of radio-electronic equipment, rectifier diodes, rectifier circuits based on diodes, determination of diode parameters