Measuring Internal Electrical Resistance of DC Voltmeter.
Author: Radoje Jankovic Accessories: 1. Folding analog voltmeter to the hate DC voltage, range: 0 – 40 V. 2. Digital or analog universal instrument or ohmmeter. 3. Measuring wires. Remove the casing from a voltmeter as seen in the pictures. If you have no experience with precise instrument, do not open the instrument, More...
Active power measurement using a DC wattmeter
Author: Radoje Jankovic Figures from Jankovic documentation The pictorial view of active power measurement is shown in left figure. For this purpose is used a standard analog wattmeter. The right upper More...
Main types of measuring insulation resistance in a electrical installations
Author and drawings: Radoje Jankovic Here are given very clear ways for measuring the insulation resistance in any kind of electrical installations. Megaohmmeter cicruit vith hand inductor above, More...