After the demonstration of Hans Christian Ørsted in the year 1820 that is, an electric current can turn aside a magnetized needle, the first galvanometer was designed. This device was designed by physicist Johann Schweigger & German mathematician and they named it a multiplier. Basically, a galvanometer includes a needle, connected to a coil so that the coil can move freely in a magnetic field. This field can be created through one or more permanent magnet poles. Once electricity is … [Read more...]

In electrical power systems, a device is needed to measure the angle between any two AC systems like power networks or generators, which are synchronized with each other. To synchronize any two electrical systems, they must be operating at the same frequency at a phase angle of zero degrees. The synchroscope devices are used to measure the frequency and phase angle differences between two AC systems. If these differences are zero, then the two systems can be connected and synchronized with each … [Read more...]