потужність

CALIBRATION OF HIGH AND ULTRA-HIGH FREQUENCY POWER METERS IN THE RANGE OF UP TO 30 MHZ

High-frequency (HF) and ultra-high-frequency (UHF) power measurements are applied in various industries both in the development and design of radio-electronic equipment and in testing, commissioning, or repair. Since such measurements are one of the basic types of measurement for metrological support in the field of radio engineering and communication, it is necessary to ensure metrological traceability of the calibration of working standards and measuring instruments to standards on fundamental constants in wide frequency and dynamic ranges.

Application of the “smart power” by the soviet authorities in strengthening public cooperation between the Ukrainian SSR and the French Republic

In the article, the preparation and conduction of the Ukrainian exhibition by the Soviet leaders at the Marseille Fair is researched. The management experience in achieving objectives by the Ukrainian Soviet authorities is studied. Specific proposals on the effectiveness of public cooperation between Ukraine and the French Republic are given.

Populism as a question of public administration: historical aspect

The article analyzes the main factors influencing populism on public administration in the historical aspect. It has been proved, as experience shows, that populism has always occupied a special place in the implementation of programs of political leaders and parties and their interrelation with public administration. Populism remains an actual phenomenon of socio-political life in many countries of the world.

Stage analysis of dynamics of public organizations in the context of interaction of the state and civil society

Problem setting. The current development of Ukraine as a state, which constantly announces its path as irreversibly democratic, makes for more effective cooperation between state authorities and civil society institutions in all spheres of social and political life.

The principle of creating a "smart" electricity meter in electric traction networks with stochastic electromagnetic processes

Voltage and current are sharply variable random (stochastic) processes in traction networks of DC electric transport systems. As a result, electronic and hybrid electricity meters used in electric systems measure electric power with a large relative error that significantly exceeds that of their accuracy class. In this paper the principle of developing smart meters for accounting the electricity transmitted from traction substations to electric rolling stock through a traction network is proposed.

Step-continuous phase power control of multi-section resonant inverter

The method of step-continuous phase power control of a multi-section resonant inverter on the basis of parallel connection of half-bridge inverter sections is proposed. Step power change consists of the commutation of synchronized step-controlled sections and continuous power control at power intervals between commutations is realized by the phase shift of pulses of a continuous-controlled section relative to the pulses of step-controlled sections.

Determination of instantaneous values of power components in an electronic voltage and current transformer

The method of determining instantaneous power components is based on the application of the p-q-r theory. The implementation of this method allows analyzing the components of instantaneous power and using the data for the purposes of various secondary systems.