Patent ID: 7046815

Claim:
A microphone comprising: means for outputting an audio signal, and means for controlling said audio signal output means, said audio signal output means comprising a capacitor microphone unit through which an audio signal is produced, amplification circuit means for amplifying the audio signal output from said microphone unit; a power circuit removably connected to a phantom power source through a connector provided thereto, said control means comprising a manual switch for manually turning on or off the output of said audio amplification circuit, and an indicator lamp lighting up in response to said manual switch being turned on/turning off and in response to said manual switch being switched off, and turned off in response to said manual switch being switched off, said control means further comprising a first circuit causing said indicator lamp to be automatically lit up, after a first predetermined period of time from a connection of the phantom power source to the microphone and a second circuit causing said indicator lamp to be automatically turned off, while turning off the output from said amplification circuit, after a second predetermined period of time from said indicator lamp lighting up has elapsed, said manual elapsed switch operating after the indicator lamp had been lit up after the first predetermined period of time from the connection of the phantom power to turn off the microphone and the indicator lamp has been turned off after the second predetermined period of time has elapsed from the indicator lamp lighting up.