====== Barkhausen Effect ====== {{tag>unseen unlocated}} {{Barkhausen.jpg?400|}} // // ===== Description ===== Demonstrates existence of magnetic domains. ===== Purpose ===== To demonstrate the Barkhausen effect as evidence for the existence of magnetic domains. ===== Apparatus ===== Transformer in Cu shielding, Strong magnet, amplifier, speaker ===== Setup ===== The high impedance winding in a small transformer is connected through shielded cable to a high gain amplifier and speaker. For low level background noise the transformer is surrounded by a copper case except for a small window left in this shielding. With high gain in the amplifier a magnet moved past the window produces noticeable clicking in the speakers. Updated on: 06/12/13 ===== Notes ===== // Demo room information // | **Location** | ---- | | **Maker** | Unknown | | **Current State** | Working |