厂家供应4015带针咪头驻极体传声器话筒

4015带线咪头说明:

产品名称：咪头 4015（4.0*1.5）mm 带线 指向性：全指向

适用范围：

可用于手机、电话机、耳机、音箱、数码MP3、汽车蓝牙、对讲机、录音笔、行车记录仪、导航仪、声控灯及声控玩具等

产品详情

直径有3.0.mm 4.0mm 6.0mm 9.0mm

高度有1.5.mm 2.2mm 2.7mm 4.5mm 6.7mm

咪头绕线，焊好端子.焊好开关，加电容 等，承接特殊型号订制。

Far Field Measurement Condition 自由场测试条件

Temperature 温度 :         25 ± 3 ℃

Bias Voltage 基准电压 :         2.0V ( with 2.2㏀ series resistor  2.2 ㏀电阻)

Acoustic stimulus :

1Pa ( 94㏈ SPL at 1㎑ ) at 50 ㎝ from the loud-speaker.

声音条件       The loud-speaker must be calibrated to make a flat frequency

response input signal

                    距离扬声器50cm处产生1pa声压。扬声器必须先用标准输入信号事先校准。

Position :       The

frequency response of microphone unit measured at 50㎝ from the loud-speaker

位置：          

扬声器距离待测话筒50cm.

正常供货灵敏度范围+/-2DB,或是+/-3DB,按客户要求供货。

8.1  VIBRATION TEST 振动测试

        To be no interference in operation after vibrations. 10㎐ to

55㎐ for 1 minute full amplitude

        1.52㎜ , for 2 hours at three axises

        1分钟频率变化从10Hz到50Hz，振幅在1.52mm,在三个方向测试振动2小时，产品应不受影响

8.2  DROP TEST 跌落测试

       To be no interference in operation after dropped to concrete

floor each one time from 1 meter

       height at three directions in state of packing

       以正规包装的三个方向从1米高处自由落到混凝土地面时,产品应不受影响

8.3  High temp. test高温测试

      After being placed in a chamber at +80℃ for 120 hours ,

sensitivity to be within ±3㏈ from initial sensitivity.

        在80 ℃环境中持续120小时，灵敏度偏离范围在±3㏈ .

        ( The measurement to be done after 2 hours of conditioning

at room temperature

          测试在室内温度下放2小时后进行)