Electric and optical fibre cables. Test methods for non-metallic materials. Part 302. Electrical tests. Measurement of the d.c. resistivity at 23 °C and 100 °C of filling compounds
Oscillator, modulator and regulation tubes with anode dissipated power above 25 W. Measurement methods of currents of anode and grids, having positive voltage relative to cathode and zero anode and grids currents
