It is difficult to predict where a ground This is very hazardous and a violation of UL code. It passes the DC component of the signal.ĭo not remove the middle prong of your 3-prong electrical plugs! The choke is primarily used in high quality applications likeīroadcast TV & ENG (electronic news gathering) etc. The choke provides protection against moderate levels ofĦ0 Hz hum, and protection against very high levels of RF noise. The Premium Hum Bucker blocks the current's path with a videoĪ broadcast-quality Premium Hum Bucker is used for removing humįrom the finest sources of video, it passes DC to hundreds of The transformer is primarily used in CCTV: security, avionics, display, etc.īoth transformer and choke can pass camera control signals.įix for premium equipment is a video isolation choke. It passes about 20 Hz to 4 MHz, and its hum isolation is greater than a choke. The standard Hum Bucker blocks the current's path with a VideoĪ standard quality Hum Bucker is used for removing hum from most Will block the current flow and restore the audio and/or videoįix for standard equipment is a video Isolation transformer. Simply disconnect one side of the coax cable and insert a Humīucker between the coax cable and the equipment. This is related to the workings of a transformer. The AC field can induce a current directly into your cableĪnd superimpose itself onto your audio or video signal showing up as hum or lines. A similar effect can occur when an AC magnetic field comesĬlose to your cable. Itself onto your audio or video signal showing up as hum or lines. (common mode) voltage will drive a current through your cable and superimpose VAC and connected together with your audio or video transmission cable. The name givenĪ difference in the ground voltage between two electronic devices powered by 120 This is the typical scenarioīut any length cable hooked to any equipment can have this problem. That is connected to different circuit breakers. Room to room or longer), with 120 VAC powered equipment at both ends of the cable Relatively long audio or video transmission cables (usually from To the lowest note on a bass guitar or bass drum. Audio hum, 60-cycle noise, 60 Hz hum, similar
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