上海AD16系列蜂鸣器性价比

    将电源(24)脚和④脚排插分别对应插到主板上的插座，通电试机时，电源指示灯时亮时灭，电源风扇和CPU风扇都时转时停，蜂鸣器无通电自检声。测电源各输出脚与地间电压，除紫线与地间电压为稳定的5V，绿线与地间的电压为稳定的，其余各脚与地间的电压都在不停地跳变，说明主板中存在严重的短路故障，拔掉光驱和硬盘的数据线和电源线，通电故障不变。取下CPU和内存条通电，电源风扇时转时停，CPU风扇不转。插入内存条，试短路绿黑线，电源风扇高速旋转，CPU风扇不转，试摸主板各芯片，发现SWSCSOH5514E-NSE0810-A404158S1332860烫手，立即断电。检测数据说明，同一个厂家的不同主板，虽然使用电压相同的电源供电，但其供电脚与地间的正向电阻却相差很多，且供电脚与地间的正反向电阻有时相同，有时相差很大。用测主板各供电脚与地间的正反向电阻查出该主板的短路故障难度很大，只能用测大功率管和各晶体管PN结的正反向电阻来寻求突破。用DT830B数字万用表二极管挡测完主板上的所有晶体管，发现Q55(N790A-EF814)的②脚与③脚间正反向电阻都为4Ω，Q54(N790A-EF814)的②脚与③脚间正反向电阻都为3Ω，Q52(748T40N03G)的②脚与③脚间正向电阻为llΩ，反向电阻为12Ω。 无源电磁蜂鸣器工作原理是：交流信号通过绕在支架上的线包在支架的芯柱上产生一交变的磁通。上海AD16系列蜂鸣器性价比

    34695-0100Molex38723-6502Molex41671-0011Molex39501-1016Molex501616-3585Molex52045-3045Molex34696-0100Molex38723-6504Molex41671-0023Molex39501-1017Molex501616-3985Molex52045-3245Molex34729-0080Molex38723-6506Molex41791-0774Molex39501-1018Molex501616-4185Molex52045-3645Molex34729-0120Molex38723-6510Molex41791-0832Molex39501-1019Molex501616-4585Molex52045-4045Molex34729-0121Molex38723-6702Molex41791-0834Molex39501-1020Molex501616-5185Molex52089-0519Molex34729-0160Molex38723-6703Molex41791-0853Molex39502-1002Molex501628-2191Molex52089-0719Molex34729-0200Molex38723-6705Molex41792-0511Molex39502-1003Molex501628-2791Molex52089-0819Molex34729-0201Molex38724-4908Molex41792-0515Molex39502-1004Molex501628-3191Molex52089-1219Molex34729-0202Molex38724-4912Molex41792-0530Molex39502-1005Molex501628-3391Molex52089-1419Molex34729-0203Molex38725-0004Molex41792-0532Molex39502-1006Molex501628-3591Molex52089-1619Molex34803-0211Molex38725-1114Molex42228-0494Molex39502-1007Molex501628-3991Molex52089-1719Mo。上海AD16系列蜂鸣器性价比一般会采用三脚抽头电感，一般为10倍的升压比，有些高声压110dB以上的可能要用小功率变压器实现升压。

    卷带)Molex45984-1162Molex50-57-9208Molex52901-0874Molex35979-0410Molex39-01-3083Molex43061-0004Molex45984-1172Molex50-57-9209Molex52901-0974Molex35979-0420Molex39-01-3089Molex43061-0005Molex45984-1182Molex50-57-9210Molex52901-1074Molex35979-0510Molex39-01-3103Molex43061-0006Molex45984-1422Molex50-57-9212Molex52901-1274Molex36503-0074Molex39-01-3109Molex43061-0008Molex45984-1432Molex50-57-9218Molex52901-1275Molex36509-0008Molex39-01-3123Molex43061-0010Molex45984-1442Molex50-57-9220Molex52901-1474Molex36509-0026Molex39-01-3129Molex43061-0012Molex45984-1452Molex50-57-9302Molex52921-0374Molex36509-0074Molex39-01-3143Molex43080-0001Molex45984-1462Molex50-57-9303Molex52921-0874Molex36510-0032Molex39-01-3149Molex43130-0001Molex45984-1472Molex50-57-9304Molex52943-1209Molex36511-0003Molex39-01-3183Molex43160-0102Molex45984-1482Molex50-57-9305Molex52965-0110Molex36528-0430Molex39-01-4030Molex43160-0103Molex45984-4112Molex50-57-9306Molex52968-0619Molex36528-0436Molex39-01-4030。

    0211Molex35151-0410Molex38740-4608Molex42878-8408Molex39532-1005Molex501951-2410Molex52266-0311Molex35151-0410Molex38740-5410Molex42878-8410Molex39532-1006Molex501951-3000Molex52266-0417Molex35151-0410Molex38740-6102Molex42878-8456Molex39532-1008Molex501951-4000Molex52271-0469Molex35151-0414Molex38740-6103Molex42878-8458Molex39532-1009Molex501951-4010Molex52271-0479Molex35151-0419Molex38740-6104Molex42878-8506Molex39532-1010Molex501951-4500Molex52271-0569Molex35151-0610Molex38740-6308Molex43009-0084Molex39532-1012Molex501951-4510Molex52271-0579Molex35151-0610Molex38740-6309Molex43020-0200Molex39-53-2104Molex501951-5000Molex52271-0679Molex35151-0619Molex38740-6314Molex43020-0201Molex39-53-2105Molex501951-5010Molex52271-0769Molex35153-0500Molex38740-7303Molex43020-0400Molex39-53-2114Molex501951-6000Molex52271-0779Molex35155-0200Molex38740-7304Molex43020-0401Molex39-53-2115Molex501951-6010Molex52271-0869Molex35155-0200Molex38741-3304Molex43020-0600。蜂鸣片由锆钛酸铅或铌镁酸铅压电陶瓷材料制成。在陶瓷片的两面镀上银电极，再与黄铜片或不锈钢片粘在一起。

    -0604Molex38760-0109Molex43025-1200Molex44248-0086Molex502350-4500/BKNMolex52435-2471Molex35180-0609Molex38760-0110Molex43025-1200Molex44248-0089Molex502351-0200Molex52435-2472Molex35181-0200Molex38760-0112Molex43025-1400Molex44248-0093Molex502351-0200Molex52435-2672Molex35181-0210Molex38760-0114Molex43025-1600Molex44248-0101Molex502351-0400Molex52435-3071Molex35181-0220Molex38760-0116Molex43025-1608Molex44282-0001Molex502351-0600Molex52435-3072Molex35182-0190Molex38760-0118Molex43025-1800Molex44300-0400Molex502351-0800Molex52437-2272Molex35182-0192Molex38760-0120Molex43025-1800Molex44300-0400Molex502352-0200Molex52437-2471Molex35182-0292Molex38760-0122Molex43025-2000Molex44300-0600Molex502352-0400Molex52437-2472Molex35182-0390Molex38760-0124Molex43025-2000Molex44300-0600Molex502352-0600Molex52437-2672Molex35182-0392Molex38760-0130Molex43025-2200Molex44300-0800Molex502352-0800Molex52437-2871Molex35183-0117Molex38760-0302Molex43025-2400Molex44300-1000Molex502380-0200Molex52437-2872Mol。而其蜂鸣片须与共振腔频率搭配，才会有较高的音压输出，并由外部振荡电路生成推动信号，使蜂鸣器发出声音。虹口区ABBAD16系列蜂鸣器货源充足

工频耐压：AC1890V 50Hz .5s 绝缘电阻≥100MΩ。 交流指示灯允许电压波动±20% 连续工作寿命≥30000H。上海AD16系列蜂鸣器性价比

    直流电源通过电磁线圈，再由输出端通过二极管给集成电路驱动芯片供电，内部振荡电路工作，并输出一定频率信号经输出端驱动单组电磁线圈，使得蜂鸣器发出声音，声音的频率由集成电路驱动芯片内部振荡器的频率而定。本发明，由于集成电路驱动芯片的电源连接电容，所以所述集成电路驱动芯片不容易被损坏，并且不会对系统造成比较大的冲击。综上所述，本发明带来的有益效果：一种高可靠性内置集成电路驱动芯片的蜂鸣器，具有可靠性高和成本低的优点。附图说明图1是本发明的结构示意图。图2是本发明的电路示意图。具体实施方式为使本发明的目的、技术方案和优点更加清楚，以下结合附图及具体实施例，对本发明作进一步地详细说明。如图1所示，本发明提供一种高可靠性内置集成电路驱动芯片的蜂鸣器，包括集成电路驱动芯片10、电容11、单组电磁线圈5、线路板6、支架3、磁环4、振动片2、正极针脚8、负极针脚9、壳体1、密封胶7。在实际安装中如图1所示，其中所述集成电路驱动芯片10、电容11、正极针脚8、负极针脚9焊接在线路板6上。如图2，结合图1，线路连接关系为：集成电路驱动芯片10电源连接电容11的一端，电容11的另一端连接负极针脚9，集成电路驱动芯片10地线端连接负极针脚9。上海AD16系列蜂鸣器性价比