盐城接触器AD16系列蜂鸣器哪家强

    5970-4105Molex50-57-9010Molex52893-2090Molex35978-0510Molex39-01-2240Molex43045-2215Molex45970-4115Molex50-57-9011Molex52893-2095Molex35978-0520Molex39-01-2241Molex43045-2218Molex45970-4305Molex50-57-9012Molex52893-2290Molex35978-0610Molex39-01-2245Molex43045-2219Molex45970-4315Molex50-57-9013Molex52893-2295Molex35978-0620Molex39-01-2245Molex43045-2400Molex45970-4385Molex50-57-9014Molex52893-2495Molex35978-0710Molex39-01-2246Molex43045-2401Molex45970-5115Molex50-57-9015Molex52893-2496Molex35978-0720Molex39-01-3022Molex43045-2402Molex45970-5715Molex50-57-9016（70066-0015）Molex52893-2695Molex35978-0810Molex39-01-3023Molex43045-2406Molex45971-0161Molex50-57-9017Molex52893-2890Molex35978-0820Molex39-01-3023Molex43045-2409Molex45971-0361Molex50-57-9018Molex52893-2895Molex35978-0910Molex39-01-3025Molex43045-2411Molex45971-2115Molex50-57-9020Molex52893-3090Molex35978-0920Molex39-01-3028Molex43045-2412Molex45971-2515Molex50-57-9023Molex52893-3095Molex35978-1010Molex39-01-3028Molex43045-2413。声音频率可控，可以做出"多来米发索拉西"的效果。盐城接触器AD16系列蜂鸣器哪家强

    578-0400Molex52610-1271Molex35362-1050Molex38783-6407Molex43045-0422Molex44478-3111Molex502578-0500Molex52610-1272Molex35362-1150Molex38789-0050Molex43045-0423Molex44478-3112Molex502578-0600Molex52610-1275Molex35362-1250Molex38789-0222Molex43045-0424Molex44485-1211Molex502578-0800Molex52610-1371Molex35362-1450Molex38789-0310Molex43045-0425Molex44485-1212Molex502578-1000Molex52610-1471Molex35362-1550Molex38969-0003Molex43045-0426Molex44485-3212Molex502578-1200Molex52610-1472Molex35362-2050Molex39-00-0021Molex43045-0427Molex44499-0003Molex502578-1400Molex52610-1475Molex35363-0260Molex39-00-0022Molex43045-0428Molex44499-0007Molex502578-1500Molex52610-1494Molex35363-0360Molex39-00-0023(5479PBT)Molex43045-0600Molex44499-0049Molex502579-0000Molex52610-1571Molex35363-0360Molex39-00-0029Molex43045-0601Molex44499-0088Molex502579-0000Molex52610-1671Molex35363-0360Molex39-00-0030Molex43045-0602Molex44516-0009(PK-44516-004)Molex502584-0260Molex52610-1672Molex35363-0460Molex39-00-0038。盐城接触器AD16系列蜂鸣器哪家强电磁无源蜂鸣属于感性负载器件，理想输入是正向方波通常记作：VO-P。

    故在电路中起着自动调节、安全保护、转换电路等作用。在大多数的情况下，继电器就是一个电磁铁，这个电磁铁的衔铁可以闭合或断开一个或数个接触点。当电磁铁的绕组中有电流通过时，衔铁被电磁铁吸引，因而就改变了触点的状态。继电器一般可以分为电磁式继电器、热敏干簧继电器、固态继电器等。本实验板上配置的继电器如图9-15。图9-15继电器实物图继电器也是属于感性器件，所以不能用单片机的I/O口直接来控制，且要在三极管等控制器件上加反相保护电路。一般实验中都是单片机通过一个PNP型三极管，把三极管作为电子开关来驱动继电器，继电器的开和关完全由三极管的基极电平进行控制。当三极管基极为高电平，PNP型三极管截止，这时继电器不工作；反之为低电平的话，PNP型三极管导通。

    比由pwm方波驱动的蜂鸣器发出的声音效果更好，没有杂音，从而改善了蜂鸣器音质。附图说明图1为本发明的蜂鸣器驱动电路的结构框图；图2为本发明的蜂鸣器驱动电路的电路原理图；图3为本发明的振荡回路的波形图；图4为本发明的振荡控制电路的逻辑示意图；图5为本发明的振荡回路在时刻的等效电路；图6为本发明的振荡回路在第二时刻的等效电路。具体实施方式为使本领域的普通技术人员更加清楚地理解本发明的目的、技术方案和优点，以下结合附图和实施例对本发明做进一步的阐述。如图1所示，在本发明一个实施例中，蜂鸣器驱动电路包括有依次连接的电源控制电路10、振荡控制电路20和振荡回路30，所述电源控制电路10与mcu连接，mcu输出高、低电平控制所述电源控制电路10导通或关断，从而控制蜂鸣器驱动电路与电源之间的电路导通或关断。当所述电源控制电路10导通时，所述振荡控制电路20控制所述振荡回路30振荡并于蜂鸣器两端产生正弦波信号和第二正弦波信号，所述正弦波信号和第二正弦波信号频率相同、相位相反。如图2所示，所述电源控制电路10包括有电阻r1和开关管q1，所述开关管q1的端与所述振荡控制电路20连接，所述开关管q1的第二端接地。周边支持方式-将蜂鸣片外径边缘固定于共振腔内，一般采无回授式蜂鸣片。

    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。如果给预直流信号蜂鸣器是不响应的，因为磁路恒定，钼片不能振动发音。盐城接触器AD16系列蜂鸣器哪家强

制备电磁铁Ｍ：在长约6厘米的铁螺栓上绕100圈导线。盐城接触器AD16系列蜂鸣器哪家强

    美国）Molex39-53-2124Molex501953-0307Molex52271-0879Molex35155-0300Molex38741-6602Molex43020-0601Molex39-53-2125Molex502046-2070Molex52271-0879Molex35155-0400Molex38741-6603Molex43020-0800Molex39-53-2135Molex502046-3070Molex52271-0979Molex35155-0500Molex38741-9802Molex43020-0801Molex39-53-2144Molex502046-4070Molex52271-1069Molex35155-0590Molex38742-1404Molex43020-1000Molex39-53-2145Molex502078-2110Molex52271-1079Molex35155-0600Molex38749-0001Molex43020-1001Molex39-53-2154Molex502078-2510Molex52271-1179Molex35155-0700Molex38749-0099Molex43020-1200Molex39-53-2155Molex502078-3310Molex52271-1269Molex35155-0800Molex38749-0181Molex43020-1200Molex39-53-2164Molex502078-3910Molex52271-1279Molex35155-0810Molex38749-0183Molex43020-1201Molex39-53-2165Molex502078-5110Molex52271-1379Molex35155-0900Molex38749-0185Molex43020-1400Molex39-53-2174Molex502118-5090Molex52271-1469Molex35155-1000Molex38749-0188Molex43020-1401Molex39-53-2175Molex50212-8000Molex52271-1479Molex35155-1100Molex38750-0106Molex43。盐城接触器AD16系列蜂鸣器哪家强