公开(公告)号：US20140176237A1

公开(公告)日：2014-06-26

申请号：US14139907

申请日：2013-12-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jae-cheol LEE ,  Byung-soo KIM ,  Joo-moon YOUN ,  Kee-yeong CHO

IPC: H03F3/02

CPC classification number: H03F3/02 ,  H03F3/181 ,  H03F3/20 ,  H03F5/00

Abstract: An electronic device includes an amplifier which is configured to amplify a sound signal and includes a vacuum tube including a heater configured to heat the vacuum tube; a voltage supply which is configured to supply a first voltage and a second voltage which is higher than the first voltage; and a controller which is configured to control the voltage supply to supply the second voltage to the heater in response to supply of a drive voltage to the amplifier being started and to supply the first voltage to the heater if the vacuum tube reaches a predetermined temperature.

Abstract translation: 电子设备包括放大器，其被配置为放大声音信号，并且包括：真空管，其包括被配置为加热所述真空管的加热器; 被配置为提供高于第一电压的第一电压和第二电压的电压源; 以及控制器，被配置为控制电压供应以响应于向正在启动的放大器提供驱动电压而向加热器提供第二电压，并且如果真空管达到预定温度则将第一电压提供给加热器。