👉 Electrotyper, also known as an electrometer or a current transformer, is a device used to measure and display the electrical currents. It typically consists of two coils placed in series with each other, one connected to a fixed reference point (the "stator") and the other to the output terminals of a voltage source. The input signal is applied to the stator coil, which generates an alternating current (AC). The current through the stator coil can then be measured by the transformer