Protection circuit for detachable operating unit used in audio device

Abstract

Abstract A detachable operating unit for connection with a main unit comprises at least two power supply units for applying operating voltages to the detachable operating unit, the power supply units generating two different voltages, respectively; at least two power supply terminals for engaging the detachable operating unit and the main unit to receive two different voltage applied to the power supply units, respectively; a ground terminal for engaging the detachable operating unit and the main unit; a protective circuit for applying a reverse voltage in response to a differential voltage between voltages of the power supply units, the protective circuit being disposed between one of power supply units which generates the operating voltage lower than that of the other power supply unit, and the ground terminal.

Inventors

• 👤 Seiji C/O Pioneer Electronic Corporation Kato
• 👤 Kazuhiro C/O Pioneer Electronic Corp. Kiyoura

Bibliographic Details