MAKE A MEME
View Large Image
| View Original: | Ground loop solution - broken shield.svg (998x617) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Ground loop solution - broken shield.svg ground loop is an inadvertent electrical circuit or loop created by the ground wiring of electrical equipment Ground loops are a major cause of hum and interference in audio video and computer equipment because circulating currents induced by stray magnetic fields from nearby 50/60 Hz equipment can cause AC voltage dropped across signal grounds In this diagram two AC powered electronic components C1 and C2 are connected by a shielded signal cable S The ground shield of S along with the ground wire third wire P in the components' power cord and the building's utility ground wiring G form a ground loop By breaking the shield conductor <font color red >red</font> between the two components the loop is broken preventing the ground loop current from flowing The shield should be broken at the load or destination end of the cable C2 not the source C1 This solution works as long as both components are grounded to the building wiring but if one of the components does not have a ground wire in its power cord it will be totally ungrounded floating and AC leakage currents will result in very loud hum in audio signals Information and circuit from Larry Robinson http //midimagic sgc-hosting com/gndloop htm About Ground Loops MidiMagic website 2014-01-20 13 07 59 own Chetvorno cc-zero Uploaded with UploadWizard Ground loops | ||||
