供應(yīng)Fair-Rite全系產(chǎn)品8978151521 2643102002

維創(chuàng)域貿(mào)易有限公司蘇州分公司  徐先生 18051732733 051268755133 長期供應(yīng)Fair-Rite全系產(chǎn)品
視頻線等線材上，可有效屏蔽EMI/RFI干擾，隔離或?yàn)V除電源連接導(dǎo)線竄入設(shè)備電路的高頻噪聲脈沖干擾，如用在音視頻電器電源線上能進(jìn)一步提升音頻及視頻質(zhì)量，無疑是音響發(fā)燒友的選擇。用在音頻線，視頻線等各種發(fā)燒線材上，其增加音響系統(tǒng)純凈度，降低訊號(hào)線被電源線雜訊干擾.
磁環(huán)
電子設(shè)備輻射和泄漏的電磁波不僅嚴(yán)重干擾其他電子設(shè)備正常工作，導(dǎo)致設(shè)備功能紊亂、傳輸錯(cuò)誤、還威脅著人類的健康與安全，危害非常大。因此降低電子設(shè)備的電磁干擾(EMI)已經(jīng)是必須考慮的問題。

吸收磁環(huán)，又稱鐵氧體磁環(huán)，簡稱磁環(huán)。它是電子電路中常用的抗干擾元件，對(duì)于高頻噪聲有很好的抑制作用，一般使用鐵氧體材料（Mn－Zn）制成。

磁環(huán)在不同的頻率下有不同的阻抗特性，一般在低頻時(shí)阻抗很小，當(dāng)信號(hào)頻率升高磁環(huán)表現(xiàn)的阻抗急劇升高。

大家都知道，信號(hào)頻率越高，越容易輻射出去（要買優(yōu)質(zhì)的電腦機(jī)箱也是要減小電磁泄漏），而一般的信號(hào)線都是沒有屏蔽層的，那么這些信號(hào)線就成了很 好的天線，接收周圍環(huán)境中各種雜亂的高頻信號(hào)，而這些信號(hào)疊加在本來傳輸?shù)男盘?hào)上，甚至?xí)淖冊(cè)瓉韨鬏數(shù)挠杏眯盘?hào)。那么在磁環(huán)作用下，使正常有用的信號(hào)很好的通過，又能很好的抑制高頻干擾信號(hào)的通過，而且成本低廉。

所以大家在顯示器信號(hào)線，USB連接線，甚至高檔鍵盤、鼠標(biāo)上看的塑料疙瘩型的一體式磁環(huán)就不足為奇了。

磁環(huán)的匝數(shù)選擇

將整束電纜穿過一個(gè)鐵氧體磁環(huán)就構(gòu)成了一個(gè)共模扼流圈，根據(jù)需要，也可以將電纜在磁環(huán)上面繞幾匝。匝數(shù)越多，對(duì)頻率較低的干擾抑制效果越好，而對(duì)頻率較高的噪聲抑制作用較弱。在實(shí)際工程中，要根據(jù)干擾電流的頻率特點(diǎn)來調(diào)整磁環(huán)的匝數(shù)。通常當(dāng)干擾信號(hào)的頻帶較寬時(shí)，可在電纜上套兩個(gè)磁環(huán)，每個(gè)磁環(huán)繞不同的匝數(shù)，這樣可以同時(shí)抑制高頻干擾和低頻干擾。從共模扼流圈作用的機(jī)理上看，其阻抗越大，對(duì)干擾抑制效果越明顯。而共模扼流圈的阻抗來自共模電感Lcm=jwLcm，從公式中不難看出，對(duì)于一定頻率的噪聲，磁環(huán)的電感越大越好。但實(shí)際情況并非如此，因?yàn)閷?shí)際的磁環(huán)上還有寄生電容，它的存在方式是與電感并聯(lián)。當(dāng)遇到高頻干擾信號(hào)時(shí)，電容的容抗較小，將磁環(huán)的電感短路，從而使共模扼流圈失去作用
 
 

Item Brand Mftrs No Debion
1 FAIR RITE 199000005 Expanded Cable and Connector EMI Suppres
2 FAIR RITE 199000017 EMI SUPRESSION EVALUATION KITS
3 FAIR RITE 199000018 Product Debion:Fair-Rite Engineerin
4 FAIR RITE 199000034 EMI SUPRESSION EVALUATION KITS
5 FAIR RITE 199001401 EMI SUPRESSION EVALUATION KITS
6 FAIR RITE 431164181 31 SNAP-IT ROUND CABLE SUPPRESSION CORE
7 FAIR RITE 431164281 FERRITES IMPEDANCE:310OHMS; SIZE/DIMENSI
8 FAIR RITE 431164951 FERRITE CORE IMPEDANCE:280OHM; SIZE/DIME
9 FAIR RITE 431167281 Ferrites; Impedance: 240Ohms; Size/Dimen
10 FAIR RITE 431173551 Ferrites; Impedance: 220Ohms; Size/Dimen
11 FAIR RITE 443163951 EMI SUPRESSION CORES WITH CASES
12 FAIR RITE 443164151 Round Cable Snap-Its, Cable Diameter-.50
13 FAIR RITE 443164251 FERRITE ROUND CORE ((NW))
14 FAIR RITE 443167251 EMI SUPRESSION CORES WITH CASES
15 FAIR RITE 443625006 EMI SUPRESSION CORES WITH CASES
16 FAIR RITE 444164181 44 SNAP-IT ROUND CABLE SUPPRESSION CORE
17 FAIR RITE 444164281 44 SNAP-IT ROUND CABLE SUPPRESSION CORE
18 FAIR RITE 444164951 Round Cable Core, EMI Suppression, with
19 FAIR RITE 444167281 EMI SUPRESSION CORES WITH CASES
20 FAIR RITE 444173551 Ferrite Core Impedance:94Ohm
21 FAIR RITE 444176451 FERRITE CORE IMPEDANCE:175OHM
22 FAIR RITE 2631102002 ROUND CABLE EMI SUPPRESSION CORES
23 FAIR RITE 2631665702 Ferrite Core Impedance:225Ohm
24 FAIR RITE 2643000101 Ferrites; Impedance: 40Ohms; Resistance:
25 FAIR RITE 2643000801 Shield Bead, EMI, 92 ohm Impedance at 10
26 FAIR RITE 2643000801 Shield Bead, EMI, 92 ohm Impedance at 10
27 FAIR RITE 2643001501 Ferrites Resistance:35Ohms
28 FAIR RITE 2643021801 Ferrite Bead Resistance:131Ohm
29 FAIR RITE 2643102002 STATIC PROTECTION ((NW))
30 FAIR RITE 2643102402 43 EMI Suppression Bead
31 FAIR RITE 2643164251 43 SHIELD BEAD
32 FAIR RITE 2643166651 Flat cable EMI suppression core, (HxWxD
33 FAIR RITE 2643166851 Flat cable EMI suppression core, (HxWxD
34 FAIR RITE 2643167851 43 Flat Cable EMI Suppression Core
35 FAIR RITE 2643169552 43 Flat Cable EMI Suppression Core
36 FAIR RITE 2643375002 EMI SHIELD BEADS
37 FAIR RITE 2643480002 Round cable EMI suppression core, 1 in.
38 FAIR RITE 2643540002 ROUND CABLE EMI SUPPRESSION CORES
39 FAIR RITE 2643540402 43 Round Cable EMI Suppression Core
40 FAIR RITE 2643625002 Ferrite, E Core
41 FAIR RITE 2643625102 43 Round Cable EMI Suppression Core
42 FAIR RITE 2643626302 43 Round Cable EMI Suppression Core
43 FAIR RITE 2643626402 43 ROUND CABLE EMI SUPPRESSION CORE
44 FAIR RITE 2643626502 ROUND CABLE EMI SUPPRESSION CORES
45 FAIR RITE 2643803802 ROUND CABLE EMI SUPPRESSION CORES
46 FAIR RITE 2643804502 ROUND CABLE EMI SUPPRESSION CORES
47 FAIR RITE 2643806402 ROUND CABLE EMI SUPPRESSION CORES

48 FAIR RITE 2673000101 EMI suppression bead1 

1 FAIR RITE 199000005 
2 FAIR RITE 199000017 
3 FAIR RITE 199000018 
4 FAIR RITE 199000034 
5 FAIR RITE 199001401 
6 FAIR RITE 431164181 
7 FAIR RITE 431164281 
8 FAIR RITE 431164951 
9 FAIR RITE 431167281 
10 FAIR RITE 431173551 
11 FAIR RITE 443163951 
12 FAIR RITE 443164151 
13 FAIR RITE 443164251 
14 FAIR RITE 443167251 
15 FAIR RITE 443625006 
16 FAIR RITE 444164181 
17 FAIR RITE 444164281 
18 FAIR RITE 444164951 
19 FAIR RITE 444167281 
20 FAIR RITE 444173551 
21 FAIR RITE 444176451 
22 FAIR RITE 2631102002 
23 FAIR RITE 2631665702 
24 FAIR RITE 2643000101 
25 FAIR RITE 2643000801 
26 FAIR RITE 2643000801 
27 FAIR RITE 2643001501 
28 FAIR RITE 2643021801 
29 FAIR RITE 2643102002 
30 FAIR RITE 2643102402 
31 FAIR RITE 2643164251 
32 FAIR RITE 2643166651 
33 FAIR RITE 2643166851 
34 FAIR RITE 2643167851 
35 FAIR RITE 2643169552 
36 FAIR RITE 2643375002 
37 FAIR RITE 2643480002 
38 FAIR RITE 2643540002 
39 FAIR RITE 2643540402 
40 FAIR RITE 2643625002 
41 FAIR RITE 2643625102 
42 FAIR RITE 2643626302 
43 FAIR RITE 2643626402 
45 FAIR RITE 2643803802 
46 FAIR RITE 2643804502 
47 FAIR RITE 2643806402 
48 FAIR RITE 2673000101 
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59 FAIR RITE 2743004111 
60 FAIR RITE 2743007112 
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62 FAIR RITE 2743015112 
63 FAIR RITE 2743019446 
64 FAIR RITE 2743019447 
65 FAIR RITE 2743019447 
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67 FAIR RITE 2743037447 
68 FAIR RITE 2744045447 
69 FAIR RITE 2744051447 
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74 FAIR RITE 2873000202 
75 FAIR RITE 2873002402 
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77 FAIR RITE 2943666681 
78 FAIR RITE 2944666661 
79 FAIR RITE 2944777741 
80 FAIR RITE 2961666671 
81 FAIR RITE 0443 164 051 
82 FAIR RITE 0443 166 651 
83 FAIR RITE 0443 167 251 
84 FAIR RITE 0443163951B 
85 FAIR RITE 0443164051B 
86 FAIR RITE 0443164151B 
87 FAIR RITE 0443164251B 
88 FAIR RITE 0443166651B 
89 FAIR RITE 0443167251B 
90 FAIR RITE 0443625006B 
91 FAIR RITE 0443665806B 
92 FAIR RITE 0443800506B 
93 FAIR RITE 0443806406B 
94 FAIR RITE 2506031017Y0 
95 FAIR RITE 2506036017Y0 
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98 FAIR RITE 2508051217Z0 
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101 FAIR RITE 2512066017Y1 
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106 FAIR RITE 2518065007Y6 
107 FAIR RITE 2518121217Y3 
108 FAIR RITE 2518121217Y6 
109 FAIR RITE 264 3665 702 
110 FAIR RITE 2643000101C 
111 FAIR RITE 2643000301/F1 
112 FAIR RITE 2643000301C 
113 FAIR RITE 2643000801C 
114 FAIR RITE 2643002402/E1 
115 FAIR RITE 2643002402C 
116 FAIR RITE 2643102002B 
117 FAIR RITE 2643540002B 
118 FAIR RITE 2643665702B 
119 FAIR RITE 2643801002B 
120 FAIR RITE 2643802702B 
121 FAIR RITE 2643803802B 
122 FAIR RITE 2643804502B 
123 FAIR RITE 2673000101C 
124 FAIR RITE 2673000301C 
125 FAIR RITE 2743001112H 
126 FAIR RITE 2743003112H 
127 FAIR RITE 2743009112H 
128 FAIR RITE 2743019447H 
129 FAIR RITE 2743021447H 
130 FAIR RITE 2743021447-TR 
131 FAIR RITE 2944666631/G1 
132 FAIR RITE 2944666631C 
133 FAIR RITE 2944666661C 
134 FAIR RITE 2944666671C 
135 FAIR RITE 2944666671G