Neukurve

Description: Hysteresis is the term used to describe the behaviour of a system in which the output quantity depends on both the external parameters acting on the system and the previous state of the system. As a result, even when external conditions are identical, the system can still assume different values, depending on the previous state. Hysteresis is depicted by a hysteresis curve. For example, applying a voltage to the Transformer coil for the first time magnetises the Iron core (virgin curve). Reducing the current and thus the field Strength to 0, and then changing its polarity, causes the curve to pass the points of remanence (at H=0) and coercivity (B=0) to the point of saturation. Following a subsequent further change in polarity, the curve runs centrosymmetrically to the point of magnetisation already described.