收藏本站
Undoubtedly the two-pole filter would be a more
economical choice with probably equal performance in
this application. Since the equipment is not likely to be
equivalent to either one of these simple cases, the only
way to find the best cost-effective solution is to test the
filters in your equipment and base your judgement on
these test results.
Figure 1b.
The same circuit as in Figure 1a, with the addition of
a 2-pole low pass filter. Notice filter capacitor C1 is in
parallel with the capacitive load.
Figure 1c.
Combining capacitor
C1 in Figure 1b,
with the load
results in this circuit
configuration.
The filter has been reduced to one inductive element, L1.
Obviously a three-pole filter would be preferred for
maximum performance. Likewise, if the equipment
looked strictly inductive, the performance of a three-
pole network would be reduced to that of a two-pole
network.
Figure 2a.
A signal source
with its internal
impedance driving
an inductive load.
Leakage Current
The maximum leakage current that a device is allowed
depends on the requirements of the particular safety
agency involved. Here, selection of the filter is quite
easy since either the filter is designed to meet a given
level or it is not. Although there is no compromise
when it comes to safety specifications, it should be
understood that for a given level of performance, as
the leakage current is reduced, the physical size of the
package will increase. Curtis medical filters have a very
low leakage current.
Insertion Loss
DO NOT use the insertion loss specifications to make
your final decision. Power line filters are two-terminal
pair passive networks whose attenuation characteristics
can be defined by a complex transfer function. How
that transfer function will react in a particular system
and at specific frequencies will depend on the complex
impedances connected to each side of the filter. The
equipment impedance and the impedance of the
power line, even if a 50 ohm LISN (Line Impedance
Stabilization Network) is being used during emission
testing, will not generally be equal to the resistive
50 ohms used during insertion loss measurements.
Therefore, the performance of the filter in the
equipment cannot be related to the published insertion
loss data.
Figure 2b.
The same circuit as in Figure 2a, with the addition of a
3-pole low pass filter. Notice filter inductance L2 is in
series with the inductive load.
Figure 2c.
Combining inductor L2 in Figure 2b, with the load
results in this circuit configuration, the filter has been
reduced to two effective elements, L1 & C1.
Minimum Insertion Loss
Do not be alarmed that the insertion loss figures we
have published may be of lower value than those of
our competition. You will only find guaranteed minimum
insertion loss figures in this catalog, without any
mention of typical values.
Insertion loss test data measured in a 50 ohm
system is a valuable incoming inspection tool to assure
you that consistent product is being shipped. The only
figures of any importance are those that specify the
criteria for acceptance or rejection of that product, and
those figures are the minimum values.
Curtis Industries
A Division of Powers Holdings, Inc.
1-800-657-0853
87
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
F2800BB15 FILTER HI PERFORM 15A WIRE
F3000AA06 FILTER POWER LINE MED 6A FASTON
F3099AA06 FILTER POWER LINE EMI 6A FASTON
F3480T112 FILTER 3-PHASE 480V 112A
F721A108MMC CAP TANT 1000UF 10V 20% SMD
F910E477MNC CAP TANT 470UF 2.5V 20% 2312
F911A337MNC CAP TANT 330UF 10V 20% 2917
F921V104MAA CAP TANT 0.1UF 35V 20% 1206
相关代理商/技术参数
F2700BB06 制造商:Curtis Industries 功能描述:
F2700CA03 功能描述:POWER ENTRY FILTERED 3A FASTON RoHS:是 类别:滤波器 >> 电源输入 - 模块 系列:F2700 产品培训模块:5707 Power Entry Module 标准包装:10 系列:5707 保险丝盒:包括在内 安装类型:面板安装，螺孔 滤波器类型:通用型 特点:防尘，保险丝盒，屏蔽，防水 电压:125/250VAC 电流:1A 端接类型:快速连接 类型:IEC 320-C14（公引脚） 其它名称:486-1263
F2700CA06 功能描述:POWER ENTRY FILTERED 6A FASTON RoHS:是 类别:滤波器 >> 电源输入 - 模块 系列:F2700 产品培训模块:5707 Power Entry Module 标准包装:10 系列:5707 保险丝盒:包括在内 安装类型:面板安装，螺孔 滤波器类型:通用型 特点:防尘，保险丝盒，屏蔽，防水 电压:125/250VAC 电流:1A 端接类型:快速连接 类型:IEC 320-C14（公引脚） 其它名称:486-1263
F2700FB03 功能描述:FILTER FUSED SWITCHING 3A WIRE RoHS:是 类别:滤波器 >> 电源输入 - 模块 系列:F2700 产品培训模块:5707 Power Entry Module 标准包装:10 系列:5707 保险丝盒:包括在内 安装类型:面板安装，螺孔 滤波器类型:通用型 特点:防尘，保险丝盒，屏蔽，防水 电压:125/250VAC 电流:1A 端接类型:快速连接 类型:IEC 320-C14（公引脚） 其它名称:486-1263
F27074-000 制造商:TE Connectivity 功能描述:CXA-0066-18-1-9CS2973 - Cable Rools/Shrink Tubing
F27075-000 制造商:TE Connectivity 功能描述:PTC Resettable Fuse 240VAC T/R 制造商:TE Connectivity 功能描述:- Tape and Reel 制造商:TE Connectivity 功能描述:POLYSWITCH PTC RESET 0.25A T/R 制造商:TE Connectivity / Raychem 功能描述:POLYSWITCH PTC RESET 0.25A RAD 制造商:TE Connectivity 功能描述:LVR025K-2 制造商:TE CONNECTIVITY RAYCHEM-POLYSWITCH 功能描述:LINE VOLTAGE PRODUCTS / LVR025K-2
F2708 制造商:Fairchild Semiconductor Corporation 功能描述:
F270C10 制造商:OMRON AUTOMATION AND SAFETY 功能描述:F270 CONTROLLER NPN IN/OUTPUT