特權相關資料為什么只讓穿20M以內的
2013-11-10 17:50:57
陽光系統下載 20M寬帶下載速度是多少 20M寬帶下載速度是多少?對于這種簡單的問題,還不有不少用戶不知道。下面為廣大用戶帶來寬帶網速知識科普,來看看吧! 要了解寬帶與下載速度之間的關系,我們需要
2021-02-03 15:09:51
8095 msp430f5529倍頻到20M
2018-02-26 16:09:37
10 31/2位和41/2位數字萬用表電阻檔的最大量程一般是20MΩ。對于31/2位數字萬用表而言,使用不同的電阻量程也只能測量0.1Ω~19.99MΩ范圍內的電阻;而對于41/2位數字萬用表,則只能測量0.01Ω~19.999MΩ范圍內的電阻。當被測電阻Rx≥20MΩ時,儀表將顯示溢出符號“1”。
2016-01-26 11:09:20
5855 ![](https://file1.elecfans.com//web2/M00/A6/88/wKgZomUMPmqAJ52oAABFkulG9Wg125.png)
低功率20m連續波發射機
該發射機有一個用驅動鍵控
2009-10-10 14:23:40
597 ![](https://file1.elecfans.com//web2/M00/A5/4E/wKgZomUMN9KAYWmoAAB6w0s4xbA527.jpg)
鑒相器頻率在20M時的頻譜
鑒相器頻率在1M時的頻譜,旁瓣如圖標示:
2009-09-03 08:19:56
1976 如何用數字萬用表巧測大電阻用DT-830數字萬用表測量電阻,當被測電阻值超過20MΩ時,表頭顯示“1”,示意超量限,無法測出阻值。測量超過20MΩ的大電
2009-08-08 17:29:24
2414 ![](https://file1.elecfans.com//web2/M00/A5/37/wKgZomUMN3KAaEKcAAAspoFQ_xc398.jpg)
DT1000、CM4200型自動關機電路圖
2009-07-22 17:31:09
691 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0mAbxADAAA4Dl4ZG4k606.jpg)
DT1000、CM4200型直流電壓測量電路圖
2009-07-22 17:30:47
693 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0mAcqkiAABHfkiiqsM454.jpg)
DT1000、CM4200型頻率測量電路圖
2009-07-22 17:30:15
725 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0mATh7CAABdrzdmKD0854.jpg)
DT1000、CM4200型交流電壓測量電路圖
2009-07-22 17:29:49
793 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0mAeEt0AABWltYK_qg232.jpg)
DT1000、CM4200型電阻測量電路圖
2009-07-22 17:29:20
677 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0mASeuIAABlHFPQHdo190.jpg)
DT1000、CM4200型電容測量電路圖
2009-07-22 17:28:51
624 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0iAFM5HAAB9Um-xMCY959.jpg)
DT1000、CM4200型200MΩ高阻擋的測量電路圖
2009-07-22 17:27:19
626 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0iANRr-AABPvg7wRXY022.jpg)
DT1000、CM4200型4,1 2位AD轉換電路圖
2009-07-22 17:25:59
658 ![](https://file1.elecfans.com//web2/M00/A5/2F/wKgZomUMN0iAbF36AACYnntITQM528.jpg)
DT930F型頻率測量電路圖
2009-07-22 17:18:22
675 ![](https://file1.elecfans.com//web2/M00/A5/2E/wKgZomUMN0iAT03yAAB3niOOSmk432.jpg)
DT930F型電阻測量電路圖
2009-07-22 17:16:52
1050 ![](https://file1.elecfans.com//web2/M00/A5/2E/wKgZomUMN0iAQjrmAAB_H_PQHlM928.jpg)
DT930F型電容測量電路圖
2009-07-22 17:16:27
861 ![](https://file1.elecfans.com//web2/M00/A5/2E/wKgZomUMN0iAbXQoAACcghUksFk891.jpg)
DT930F型電導測量電路圖
2009-07-22 17:15:51
845 ![](https://file1.elecfans.com//web2/M00/A5/2E/wKgZomUMN0iAdgy5AABjnOdJCHI546.jpg)
DT860型NPN管測量電路圖
2009-07-21 17:36:57
457 ![](https://file1.elecfans.com//web2/M00/A5/2E/wKgZomUMN0aAediJAABC6SGIOGw414.jpg)
DT860D、CM2600型3,1 2位自動測量數字萬用表電路圖
2009-07-21 17:33:44
1297
DT940C型交流電壓測量電路圖
2009-07-20 17:39:08
630 ![](https://file1.elecfans.com//web2/M00/A5/2E/wKgZomUMN0SAKpBkAABfTeIa-Uo334.jpg)
DT940C型直流電壓測量電路圖
2009-07-20 17:36:38
619 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SAYTF-AABFTn5wnfk587.jpg)
DT940C型直流電流測量電路圖
2009-07-20 17:35:55
557 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SAfy2BAABaqZXxbQ0136.jpg)
DT940C型溫度測量電路圖
2009-07-20 17:34:55
529 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SAUf4PAABGsrNIKH0315.jpg)
DT940C型晶體管hFE測量電路圖
2009-07-20 17:34:07
505 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SAO_ciAAA9p9Rx1W0075.jpg)
DT940C型電阻測量電路圖
2009-07-20 17:33:42
771 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SARzeSAABn_WY4zWc137.jpg)
DT940C型電容測量電路圖
2009-07-20 17:33:17
542 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SALPANAACE_VqwpRQ639.jpg)
DT940C型電導測量電路圖
2009-07-20 17:32:32
501 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0SAUBGnAABIgRvetNQ910.jpg)
DT809C型直流電壓測量電路圖
2009-07-20 17:29:22
430 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAB5RwAABOoMCLD8o752.jpg)
DT809C型直流電流測量電路圖
2009-07-20 17:29:02
408 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAG2GNAABJbKMTuOE369.jpg)
DT809C型小數點與低電壓指示符的驅動電路圖
2009-07-20 17:28:33
418 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAIvlbAABqrqqL9JA101.jpg)
DT809C型交流電壓測量電路圖
2009-07-20 17:28:07
520 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAO_z0AABrl2FFNs4669.jpg)
DT809C型電容測量電路圖
2009-07-20 17:27:44
559 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAMoPhAACGcdfO1kY712.jpg)
DT809C型3,1 2位數字萬用表的總電路圖
2009-07-20 17:27:21
680 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAJ673AAIaf8bYDnc762.jpg)
DT809C型3,1 2位AD轉換電路圖
2009-07-20 17:26:51
599 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAUbO8AACB7IOjr7U048.jpg)
DT809C+、CM3920型直流電壓測量電路圖
2009-07-20 17:26:23
505 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAJmOnAABFjUDsjss481.jpg)
DT809C+、CM3920型直流電流測量電路圖
2009-07-20 17:26:00
521 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAM2gLAABS9RX9Jrs384.jpg)
DT809C+、CM3920型小數點及標識符驅動電路圖
2009-07-20 17:25:39
475 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAXlFCAAByvNy8aQk916.jpg)
DT809C+、CM3920型晶體管hFE測量電路圖
2009-07-20 17:25:02
397 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OATf92AAA8XE-N-F0962.jpg)
DT809C+、CM3920型交流電壓測量電路圖
2009-07-20 17:24:35
709 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAXyu9AABky4viYt0980.jpg)
DT809C+、CM3920型二極管及蜂鳴器電路圖
2009-07-20 17:24:09
669 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OALnToAACKd8Obzsk600.jpg)
DT809C+、CM3920型電容測量電路圖
2009-07-20 17:23:34
546 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAFwlBAAClwLxZNBE015.jpg)
DT809C+、CM3920型測溫電路圖
2009-07-20 17:23:09
541 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OACKK3AABYhGqO_RI181.jpg)
DT809C+、CM3920型200MΩ高阻擋測量電路圖
2009-07-20 17:22:22
433 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAcwFKAABbGDUCdrA942.jpg)
DT809C+、CM3920型AD轉換電路圖
2009-07-20 17:21:59
610 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAXcBaAABpDNy5yE0458.jpg)
DT809C+、CM3920型3,1 2位數字萬用表的總電路圖
2009-07-20 17:21:18
641 ![](https://file1.elecfans.com//web2/M00/A5/2D/wKgZomUMN0OAT1xtAAIRMlTfh_c323.jpg)
M830B型電阻測量電路圖
2009-07-18 17:38:22
691 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNziANCDYAABgi7mFdaw840.jpg)
DT-1型電阻測量電路圖
2009-07-18 17:32:09
555 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNziAYoZCAABoHo2FRgQ748.jpg)
DT890B型電容測量電路圖
2009-07-18 17:27:12
888 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAC_RaAACjLCmyzZ0899.jpg)
DT890B型200Ω~20MΩ電路圖
2009-07-18 17:26:15
921 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAD-DeAACBc_r8W0U366.jpg)
DT890B型200MΩ擋的測量電路圖
2009-07-18 17:25:12
742 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAbWXpAABbb5oxRIc551.jpg)
DT890、DT890A型直流電壓測量電路圖
2009-07-18 17:13:03
960 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAbOBxAABIHvxRYDA034.jpg)
DT890、DT890A型直流電流測量電路圖
2009-07-18 17:12:35
1139 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAdCIhAABcBEv-t5g631.jpg)
DT890、DT890A型晶體管hFE測量電路圖
2009-07-18 17:11:26
588 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAJv-kAAA7olRLSd0474.jpg)
DT890、DT890A型電阻測量電路圖
2009-07-18 17:10:41
695 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAJx6UAABidPM0XVM911.jpg)
DT890、DT890A型電容測量電路圖
2009-07-18 17:09:49
902 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAeIGrAACDD0LcHU0447.jpg)
DT840D、CM3900A型自動關機電路圖
2009-07-18 17:08:27
502 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAGdlRAAA7MNelYjs099.jpg)
DT840D、CM3900A型直流電壓測量電路圖
2009-07-18 17:07:59
371 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAWZhmAABAGHmsf3g705.jpg)
DT840D、CM3900A型直流電流測量電路圖
2009-07-18 17:07:17
405 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAcl-mAABPNh2hZrA523.jpg)
DT840D、CM3900A型交流電壓測量電路圖
2009-07-18 17:06:41
456 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeARuiCAABg8CL8lvc943.jpg)
DT840D、CM3900A型二極管和蜂鳴器擋電路圖
2009-07-18 17:06:07
469 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAfA4wAABg7WsceqE319.jpg)
DT840D、CM3900A型電阻測量電路圖
2009-07-18 17:05:38
444 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeADyEOAABRjm_OFNQ057.jpg)
DT840D、CM3900A型標志符驅動電路圖
2009-07-18 17:04:54
483 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAPKu7AABLji5vysI635.jpg)
DT840D、CM3900A型AD轉換及低電壓指示電路圖
2009-07-18 17:04:12
505 ![](https://file1.elecfans.com//web2/M00/A5/2B/wKgZomUMNzeAQOl1AABrClmpHdg633.jpg)
DT830型電阻測量電路圖
2009-07-18 16:57:12
970
DT830C、CM2400型直流電壓測量電路圖
2009-07-18 16:55:38
456 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaASAU8AAA-D22Pe7A711.jpg)
DT830C、CM2400型直流電流測量電路圖
2009-07-18 16:55:12
509
DT830C、CM2400型交流電壓測量電路圖
2009-07-18 16:54:49
414
DT830C、CM2400型二極管及蜂鳴器擋的電路圖
2009-07-18 16:54:25
588
DT830C、CM2400型電阻測量電路圖
2009-07-18 16:54:00
519 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAdajuAABZT--BB5c781.jpg)
DT830C、CM2400型測溫電路圖
2009-07-18 16:53:34
447 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAWaGxAABZZ3c2uMM924.jpg)
DT830C、CM2400型AD轉換及小數點驅動電路圖
2009-07-18 16:53:12
595 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAUDbVAABwwxVesv8259.jpg)
DT830C、CM2400型3,1 2位數字萬用表的總電路圖
2009-07-18 16:52:48
538 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAHjLjAAG5rved7Dg306.jpg)
DT830B、CM2300型交流電壓測量電路圖
2009-07-18 16:50:56
679 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAMzlYAABK4aRqsEE753.jpg)
DT830B、CM2300型直流電壓測量電路圖
2009-07-18 16:50:19
1002
DT830B、CM2300型二極管測試電路圖
2009-07-18 16:49:43
729
DT830B、CM2300型電阻測量電路圖
2009-07-18 16:49:15
1112
DT830B、CM2300型AD轉換及LCD驅動電路圖
2009-07-18 16:48:21
1133
DT830A,CM3900,DT840型直流電壓測量電路圖
2009-07-18 16:47:17
423 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAcD7hAABHRYt3nRE415.jpg)
DT830A,CM3900,DT840型直流電流測量電路圖
2009-07-18 16:46:51
383 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAHXdgAABfcumjagI216.jpg)
DT830A,CM3900,DT840型小數點及低電壓指示符驅動電路圖
2009-07-18 16:46:29
402 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAHr9OAABryKG8jTg481.jpg)
DT830A,CM3900,DT840型交流電壓測量電路圖
2009-07-18 16:45:54
524 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaACfm8AABr5a8X89o792.jpg)
DT830A,CM3900,DT840型蜂鳴器電路圖
2009-07-18 16:45:31
469 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAUFvCAABOKEe2xF8905.jpg)
DT830A,CM3900,DT840型二極管測試電路圖
2009-07-18 16:45:10
371 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAV1vmAABQol3og_s540.jpg)
DT830A,CM3900,DT840型電阻測量電路圖
2009-07-18 16:44:47
469 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAa0lCAABlD6jqEGU817.jpg)
DT830A,CM3900,DT840型測量hFE的電路圖
2009-07-18 16:44:27
369 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAAHk0AABvAWYWRu8440.jpg)
DT830A,CM3900,DT840型AD轉換電路圖
2009-07-18 16:43:52
672 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzaAa85yAABRNuff77A623.jpg)
DT830A,CM3900,DT840型3,1 2位數字萬用表的總電路圖
2009-07-18 16:42:45
898 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzWAZKCBAAFlku8F-TQ127.jpg)
DT810型電阻擋的簡化電路圖
2009-07-18 16:40:31
402 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzSAbtnQAAA8qSr-vOg011.jpg)
DT810型電阻測量電路圖
2009-07-18 16:40:10
496 ![](https://file1.elecfans.com//web2/M00/A5/2A/wKgZomUMNzSAZw1VAABiAyEd6N8854.jpg)
20m波段CW,QRP業余電臺
2009-03-15 13:34:07
2341 ![](https://file1.elecfans.com//web2/M00/A4/A1/wKgZomUMNQyACXu6AAGjhWXheXA748.jpg)
如何用萬用表測量大值電阻
測量大值電阻 31/2位和41/2位數字萬用表電阻檔的最大量程一般是20MΩ。對于31/
2008-11-23 10:53:01
2099
評論