Induction coil (Transformer)

Inventory number: T16 2000.50.0.
Year of creation: 1908
Location: Hall 1

The primary coil was connected to the microphone circuit and the secondary coil to the receiver circuit. The ratio of the LB sets is 1:4, i.e. the current fluctuations produced by the microphone are transferred at a gain of 4 to the line. It has the role of low-frequency adaptation (transformation) and the isolation of the receiver from the direct-current circuit powering the microphone.

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