普陀区ABBAD16系列蜂鸣器型号

    振荡回路30会根据第二开关管q2和第三开关管q3的状态变化而改变振荡回路，振荡回路改变时，电容c1两端的压差由2*vcc变为4*vcc，增加了蜂鸣器两端的压差变化。本发明的有益效果：1.上述蜂鸣器驱动电路由电感l1、第二点l2和电容c1组成的振荡回路驱动蜂鸣器，同时由第三电感l3和第二开关管q2、第三开关q3组成的振荡控制电路对所述振荡回路进行稳定的闭环控制，使振荡回路工作时的振荡波形稳定，在蜂鸣器两端产生标准正弦波，驱动蜂鸣器发声，无需mcu输出pwm来驱动蜂鸣器，从而减少mcu的io口占用，节省了主控mcu的资源；此外，标准正弦波作用于蜂鸣器两端，蜂鸣器发出的声音比由pwm方波驱动的蜂鸣器发出的声音效果更好，没有杂音，从而改善蜂鸣器音质。2.第二开关管q2、第三开关q3会同步振荡频率改变振荡电路，从而引起蜂鸣器两端更大的变化，增加了蜂鸣器两端的压差，进而增强了蜂鸣器的音量。3.上述蜂鸣器驱动电路包括电源控制电路10，电源控制电路10根据mcu产生简单的高低电平控制所述蜂鸣器驱动电路是否对gnd形成回路从而控制蜂鸣器的工作状态，确保了整个电路的可控性和有效性，整个控制过程可靠且迅速。用曲别针做触头Ｑ，用书把曲别针垫高，用胶布粘牢，引出一条导线，如图连接好电路。普陀区ABBAD16系列蜂鸣器型号

    Molex35143-0601Molex38730-6704Molex42818-0612Molex39530-0004Molex501745-0601Molex52207-0660Molex35150-0100Molex38730-6706Molex42819-2212Molex39530-0005Molex501745-0801Molex52207-0685Molex35150-0109Molex38730-6708Molex42819-2213Molex39530-0006Molex501783-3009Molex52207-0760Molex35150-0110Molex38730-7320Molex42819-2222Molex39530-0007Molex501784-3008Molex52207-0785Molex35150-0200Molex38730-7503Molex42819-2223Molex39530-0008Molex501786-3091Molex52207-0860Molex35150-0200Molex38730-7505Molex42819-2232Molex39530-0009Molex501786-5091Molex52207-0885Molex35150-0204Molex38730-7517Molex42819-2233Molex39530-0010Molex501876-1040Molex52207-0960Molex35150-0210Molex38730-9103Molex42819-2242Molex39530-0012Molex501876-1240Molex52207-0985Molex35150-0210Molex38731-6612Molex42819-3212Molex39530-0014Molex501876-1440Molex52207-1060Molex35150-0214Molex38731-6902Molex42819-3222Molex39530-0016Molex501876-1640Molex52207-1085Molex35150-0219Molex38731-6903Molex42819-3232Molex39530-0116Molex501876-1840Molex52207-1。普陀区ABBAD16系列蜂鸣器型号额定绝缘电压：AC440V ， 连续工作寿命：≥30000h。

    电路图箭头朝里：PNP单极管；箭头朝外：NPN的单极管小圆圈为插针。用一根杜邦线将插针与单片机引脚相连，单片机引脚输出低电平，单极管导通，e、c连通，形成回路，有源蜂鸣器发声；无源蜂鸣器需要（与蜂鸣器种类有关，实际使用时可测试）的音频信号，即产生一个不断的高低电平变化，高低电平变化频率为3、单片机I/O口驱动能力非常微弱，不可以通过单片机I/O口直接驱动蜂鸣器，必须通过外接驱动电路，使R39电阻，单极管和R19电阻构成电流的放大电路从而可以驱动蜂鸣器，而不是依靠单片机管脚驱动蜂鸣器4、占空比：高电平时间方波：高电平、低电平时间相同~：取反符号，将管脚输出电平状态取反含有上拉电阻，默认输出高电平。高低电平各延时一段时间。

    35-9001Molex52893-1390Molex35977-0990Molex39-01-2181Molex43045-2022Molex45830-0223Molex50539-8000Molex52893-1395Molex35977-1000Molex39-01-2185Molex43045-2025Molex45830-0227Molex50539-8100Molex52893-1495Molex35977-1190Molex39-01-2185Molex43045-2026Molex45830-1223Molex50-57-9002Molex52893-1590Molex35977-1400Molex39-01-2185Molex43045-2027Molex45844-0004Molex50-57-9003Molex52893-1595Molex35978-0210Molex39-01-22005557-20RMolex43045-2029Molex45845-0001Molex50-57-9004(70066-0003Molex52893-1690Molex35978-0270Molex39-01-22005557-20RMolex43045-2200Molex45911-0001Molex50-57-9005Molex52893-1695Molex35978-0310Molex39-01-2201Molex43045-2201Molex45911-0038Molex50-57-9006Molex52893-1696Molex35978-0320Molex39-01-2205Molex43045-2202Molex45912-0008Molex50-57-9007Molex52893-1890Molex35978-0410Molex39-01-2220Molex43045-2212Molex45912-0038Molex50-57-9008Molex52893-1895Molex35978-0420Molex39-01-2221Molex43045-2213Molex45970-3185Molex50-57-9009Molex52893-1990Molex35978-0430Molex39-01-2225Molex43045-2214Mole。电磁式蜂鸣器 电磁式蜂鸣器由振荡器、电磁线圈、磁铁、振动膜片及外壳等组成。

    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。声音频率可控，可以做出"多来米发索拉西"的效果。上海配电箱AD16系列蜂鸣器厂家供应

接通电源后1.5~15V直流工作电压多谐振荡器起振输出1.5~2.5kHZ的音频信号，阻抗匹配器推动压电蜂鸣片发声。普陀区ABBAD16系列蜂鸣器型号

    0-1600Molex39-53-2184Molex50212-8100Molex52271-1479Molex35155-1300Molex38750-6606Molex43020-1601Molex39-53-2185Molex50217-8000Molex52271-1490(找52271-1479替代）Molex35155-1500Molex38750-7505Molex43020-1800Molex39-53-2194Molex50217-8000Molex52271-1569Molex35156-0200Molex38751-3306Molex43020-1801Molex39-53-2195Molex50217-8100Molex52271-1579Molex35156-0300Molex38752-4606Molex43020-2000Molex39-53-2204Molex50217-9001Molex52271-1669Molex35156-0300Molex38759-0012Molex43020-2001Molex39-53-2205Molex50217-9001Molex52271-1679Molex35156-0400Molex38759-0031Molex43020-2200Molex39-53-2205Molex50217-9001Molex52271-1869Molex35156-0400Molex38759-0278Molex43020-2201Molex39-53-2205Molex50217-9101Molex52271-1879Molex35156-0500Molex38759-0281Molex43020-2400Molex39-53-2244Molex502225-0801Molex52271-2069Molex35156-0600Molex38759-0309Molex43020-2401Molex39-53-2245Molex502250-1791Molex52271-2079Molex35156-0700Molex38759-0329Molex43025-0200Molex39-53-2254Molex502250-2191Molex52271-2269Molex35156-0800Molex38759。普陀区ABBAD16系列蜂鸣器型号