Product Announcement from North Hills Signal Processing Corp.
Video Isolation Transformers - "TV Humbuckers"
Humbuckers are common mode chokes that offer high impedance to common mode currents to ground, while being ideally transparent to line to line signals.
Unlike North Hills "Humstoppers", they have a limitation on the 60 Hz common mode signal that can be handled. Also the degree of isolation at 60 Hz is of the order of 40-50dB compared to 120dB for Humstoppers.
- Flat response down to dc
- Ultra-wide bandwidth
- Unbalanced to unbalanced transformers for isolation of coaxial systems
- Excellent differential gain and phase
*North Hills Application Note 153 - "Ground Isolation in Video Transmission" provides further information on the subject of video isolation transformers.