| 摘要 |
PURPOSE:To eliminate mis-sound recording due to a power left unswitched on at the microphone equipment side. CONSTITUTION:A DC power supply voltage fed via a connection plug 13 from a tape recorder 1 having a plug-in power function to which the microphone equipment is connected is detected by switch control means (Q2, R1, R2, C2, C2). Then the power of the microphone equipment 10 is automatically turned on/off synchronously with the power supply state of the connected tape recorder 1 by switching on a switching element Q1 on a power supply line PM. |
