Circuit arrangement for the voice recording of a broadband signal onto magnetic tape

摘要

A circuit arrangement for the voice recording of a broadband signal onto magnetic tape is proposed, which comprises a differential amplifier having two transistor branches connected in a cascode. The output stages of the cascodes are in this case arranged on the rotary body of a rotating scanning device. The input stages of the cascodes are fixed. The signal coupling between the input stages and output stages of the cascodes is performed inductively by means of a rotating transformer.