After that, you can measure the no load voltage of the battery by connecting the test lead to the battery terminals directly. It says "no-load" because the input resistance of the multimeter during the voltage measurement is very high, typically >1Mohm so the effect of current draw can be...
Moody's Investors Service on Wednesday downgraded China's long-term local currency and foreign currency issuer ratings from Aa3 to A1 but changed the outlook from "negative" to "stable," a move experts said showed apparent miscalculations. China dismisses Moody's downgrade as "inappropriate" Chi...
As part of determination of thermal properties of reflective insulation by experimental methods, the test element used to measure the thermal resistance of an insulated air cavity had to be created in accordance with the normative requirements. Part of this article is determination of the thermal ...
Based on the large shear test and integral method, the pile side resistance was calculated. This paper analyzes the reasons for the difference between the calculation method and the empirical formula method in the specification, in order to provide a new idea for the calculation of pile side ...
Consider this hypothesis: in a multiphase buck converter, the most accurate efficiency can be obtained by individually measuring the power delivered by each phase and summing them to exclude all PCB losses, and get the correct output power to be used in the efficienc...
The precision of strain meters can reach up to one part per billion. As such, these devices are usually used to measure the deformation of the Earth or crustal movement due to fault movement and volcanic activities. They can measure seismic wave signals at very low frequencies. ...
The carrier concentration of the perovskite films can be derived from the slope of the capacitance-voltage (Mott-Schottky) plots (see the measurement and calculation details in Supplementary Fig. 31, Supplementary Table 9 and Supplementary Note 5). The electron concentration (Fig. 3e) decreased ...
Ionic conductivity is one of the standards to measure the ionic conduction of electrolyte and a key factor in determining the electrochemical performance of SSLBs. SPEs exhibit a low ionic conductivity, which is usually in 10–6–10–5S cm−1or even much lower at RT. However, in practical...
Based on the calculation results, it was also shown that it was better to accept the skin effect (efficiency decreased below 7%) than to reduce the wire diameter to eliminate it. Keywords: wireless power transfer; inductive power transfer; coil resistance; numerical analysis; circuit analysis; ...
The standard measure of pattern quality is Band Contrast (BC), which refers to the brightness of the diffracted bands above background. However, here the Band Slope (BS) was used, which is the gradient of the intensity of signal at the edge of a band (slope of the intensity above back...