460Molex35150-3319Molex38739-0187Molex42820-5222Molex39-53-2064Molex501912-4590Molex52207-2485Molex35151-0110Molex38739-0237Molex42820-6212Molex39-53-2065Molex501912-4790Molex52207-2585Molex35151-0119Molex38739-0433Molex42820-6222Molex39-53-2074Molex501920-3001Molex52207-2685Molex35151-0210Molex38739-0518Molex42824-4002Molex39-53-2075Molex501920-4001Molex52207-2885Molex35151-0210Molex38739-0588Molex42825-4001Molex39-53-2084Molex501930-1100Molex52207-3060Molex35151-0212Molex38739-0601Molex42825-4002Molex39-53-2085Molex501931-2070Molex52207-3085Molex35151-0214Molex38739-0604Molex42825-4003Molex39-53-2094Molex501931-3070Molex52213-0211Molex35151-0216Molex38740-0103Molex42878-4218Molex39-53-2095Molex501931-4070Molex52213-0311Molex35151-0219Molex38740-3102Molex42878-6218Molex39532-1002Molex501939-0300Molex52213-0417Molex35151-0310Molex38740-3706Molex42878-6362Molex39532-1003Molex501939-0500Molex52266-0211Molex35151-0319Molex38740-4606Molex42878-8408Molex39532-1004Molex501951-2400Molex5226。線端留下5厘米作引線，用透明膠布把線圈粘好，以免線圈松開再用膠布把它粘在一個盒子上，電磁鐵就做好了。西門子AD16系列蜂鳴器廠家

    振蕩控制電路的第三電感l3的波形以及跟隨第三電感l3的波形變化而變化的第二開關管q2、第三開關管q3的波形，其中，第二開關管q2和第三開關管q3的波形為正導通，波形為0截止。由于電感l1的端和第三電感l3的端互為異名端，第二電感l2的端和第三電感l3的端互為同名端，所以第三電感l3的波形與第二電感l2、電感l1同頻率，與第二電感l2同相位，與電感l1反相位。當第三電感l3處于正弦波的正半周時，第三開關管q3導通，第二開關管q2截止；當第三電感l3處于正弦波的負半周時，第三開關q3截止，第二開關管q2導通。通過第三電感l3同頻率地控制第二開關管q2和第三開關q3的導通和截止，第三電感l3有效的反饋了由電容c1、電感l1和第二電感l2組成的振蕩回路，形成了穩定的閉環控制，使工作時的振蕩波形穩定。第二開關管q2和第三開關管q3在第三電感l3控制下交替導通與截止，第二開關管q2和第三開關管q3的狀態變化，會同頻率引起振蕩回路的改變。當第三開關管q3導通且第二開關管q2截止時，形成以“第二電感l2和電容c1串聯，再與電感l1并聯”的振蕩回路，如圖5所示；當第三開關管q3截止且第二開關管q2導通時，形成以“電感l1和電容c1串聯，再與第二電感l2并聯”的振蕩回路。浙江供應AD16系列蜂鳴器哪家**孔尺寸：φ16mm; 通過聲音來指示不同工作狀態。

    卷帶)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。

    x34803-0212Molex38729-0003Molex42375-1246Molex39502-1008Molex501628-4591Molex52089-2219Molex35021-1001Molex38729-0250Molex42375-2489Molex39502-1009Molex501628-5191Molex52089-2419Molex35021-1160Molex38729-0254Molex42375-3397Molex39502-1010Molex501635-0310Molex52089-2819Molex35021-1201Molex38729-0316Molex42375-1856Molex39502-1011Molex501635-0410Molex52116-0240Molex35021-1201Molex38729-0414Molex42375-1863Molex39502-1012Molex501635-0610Molex52116-0241Molex35021-1301Molex38729-0424Molex42400-0004Molex39502-1013Molex501639-0410Molex52116-0242Molex35021-1360Molex38729-0490Molex42410-6168Molex39502-1014Molex501639-0610Molex52116-0243Molex35022-0002Molex38729-0659Molex42410-6170Molex39502-1015Molex501645-1020Molex52116-0340Molex35022-0004Molex38729-0771Molex42410-6264Molex39502-1016Molex501645-1220Molex52116-0341Molex35022-0005Molex38729-0810Molex42410-6266Molex39502-1017Molex501645-1420Molex52116-0342Molex35022-0006Molex38729-0850Molex42410-6312Molex39502-1018Molex501645-1620Molex52116-0410M。有源蜂鳴器和無源蜂鳴器的根本區別是產品對輸入信號的要求不一樣。

    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。交變的磁通和磁環恒定磁通進行疊加，使鉬片以給定的交流信號頻率振動并配合共振腔發聲。上海西門子AD16系列蜂鳴器

額定絕緣電壓：AC440V ， 連續工作壽命：≥30000h。西門子AD16系列蜂鳴器廠家

    電路圖箭頭朝里：PNP單極管；箭頭朝外：NPN的單極管小圓圈為插針。用一根杜邦線將插針與單片機引腳相連，單片機引腳輸出低電平，單極管導通，e、c連通，形成回路，有源蜂鳴器發聲；無源蜂鳴器需要（與蜂鳴器種類有關，實際使用時可測試）的音頻信號，即產生一個不斷的高低電平變化，高低電平變化頻率為3、單片機I/O口驅動能力非常微弱，不可以通過單片機I/O口直接驅動蜂鳴器，必須通過外接驅動電路，使R39電阻，單極管和R19電阻構成電流的放大電路從而可以驅動蜂鳴器，而不是依靠單片機管腳驅動蜂鳴器4、占空比：高電平時間方波：高電平、低電平時間相同~：取反符號，將管腳輸出電平狀態取反含有上拉電阻，默認輸出高電平。高低電平各延時一段時間。西門子AD16系列蜂鳴器廠家