jlzzjlzzjlzz亚洲女,操操日,成人性爱,丁香九月激情综合

產(chǎn)品中心PRODUCTS CENTER
資料下載您現(xiàn)在的位置：首頁 > 資料下載 > 美國GRAS麥克風(fēng)上海辦事處資料
美國GRAS麥克風(fēng)上海辦事處資料
發(fā)布時(shí)間：2021/3/8   點(diǎn)擊次數(shù)：776次

美國GRAS麥克風(fēng) - 26AA 技術(shù)資料

 

The output from a condenser microphone is a very high-impedance signal and is therefore very sensitive to the capacitive loads of cables. This makes it necessary to introduce a driver with high input impedance and low output impedance. Such a driver is called a preamplifier.

The frequency range of a preamplifier is determined by its electronic circuit and is typically more than 200 kHz at the high end and 1-10 Hz at the lower end. The lower end is determined by the input impedance of the preamplifier and the capacitance of the microphone. High microphone capacitance gives a low cut-off frequency.

文件下載