1250-003

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The EMI/RFI filter, also known as an LC or RC network, is designed to reduce or eliminate electromagnetic interference (EMI) or radio frequency interference (RFI). The 1250-003 filter is specifically designed to reduce conducted emissions on AC power lines and related applications such as data lines and power distribution systems. The 1250-003 filter utilizes both capacitive and inductive components to create a power-line filter including one or more differential-mode chokes, capacitors, and high-pass filters.

The 1250-003 filter uses a combination of capacitors, inductors, and resistors to prevent transient voltage spikes and reduce conducted emissions on an AC power line. The filter consists of a two-stage filter including two common-mode chokes and two differential-mode chokes. The common-mode chokes are used to reduce the common-mode voltage that is conducted through the filter to the connected equipment. The differential-mode chokes are used to reduce differential-mode voltage conducted from one side of the filter to the other. The capacitors are used to reduce the high-frequency noise on the AC power line.

The filter is designed to be installed across the AC power line, typically between the load side of a load center or transfer switch and the connected equipment. The filter can also be installed on circuits where line-conducted noise needs to be reduced. Additionally, the filter can be installed on power distribution systems where the lines are known to be unbalanced or often subjected to transient voltage spikes.

The filter works by filtering out high-frequency noise from the AC power line. As the noise passes through the filter it is broken up into individual waveforms, which are reduced in magnitude. These waveforms are then reduced in amplitude, until eventually they are no longer present. This process reduces or eliminates the conducted emissions on the power line.

The filter can also reduce the amount of transient voltage spikes on the power line. The filter is designed to reduce the voltage spike magnitude over time, allowing it to pass freely through the filter without damaging the connected equipment. The filter is also designed to reduce the effects of electrical noise, resulting in improved system performance.

Overall, the 1250-003 filter is a useful and effective tool for reducing and eliminating conducted emissions on AC power lines. The filter utilizes capacitors, inductors, and resistors to reduce the noise and voltage spikes on the line and provide effective filtering. The filter is also designed to provide superior protection against transient voltage spikes.

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