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Video Isolation Transformers

For ground isolation in video and data transmission systems. Input and output impedances are insulated from ground and from each other. These devices discriminate against false voltages resulting from the flow of undesired currents between the LO sides of the source and a remote load Major objective in their use are:

Removal of "humbars" or other interference in Broadcast, Telecommunications and CCTV applications
Eliminate interference due to differences in ground potential or induced common-mode noise cost effectively

The following links were created in Adobe® Acrobat® PDF format. CLICK HERE to download the free Acrobat reader. The PDF files below are between 500k and 1Mb in size.

A comprehensive tutorial on isolation video transformers can be found in Application Note 153: Ground Isolation in Video Transmission and Application Note 157: Ground Isolation when the Video Feed has a DC component

TV Humstoppers & Humbuckers

TV Humstoppers

DC-isolated "Humstoppers" for power-line isolation
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TV Humbuckers

DC-coupled "Humbuckers" for elimination of common mode noise
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North Hills now manufactures RoHS compliant versions of our Wideband Transformers. To order a RoHS compliant Wideband Transformer simply add the letters LF at the end of the model number.

For example:  North Hills balun transformer 1117CC-LF is a RoHS compliant product.

Application Notes:

The North Hills Wideband On-line Store facilitates convenient quick-response purchases our popular stock items.

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