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Its caused by the power supply units. Basically the ground connection in the audio is derived from a synthetic 'ground' from the transformer, each device does this seperately so you can end up with the grounds having a voltage differential betwen them and hence the noise. you can get a device called a dti which isolates the grounds and matches the impedance of the source and destination devices, also a di box may do the job.. i see and hear ground loops and thier associated problems daily! Example being a laptop and projector plugged into different phases on a 3 phase mains installation you can get a ground loop induced onto a vga signal cable (analogue) which gives you wavey lines on screen.... or it could be a powered musical instrument plugged into a mixing desk in a remote location gets induced hum ir interference.
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- Raspberry Pi
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Council Tax Increase for " Green Bins "
TeflonTom replied to Auric Goldfinger's topic in Off Topic Chat
Where I used to live I got into a dispute over bin collections after the bin lorry knocked my fence over, I complained the second time they did it, and by the fourth time they knocked my fence down I took the proper hump with them, the following complaint led to te bin men getting cocky and when they came on collection day they would deliberately leave a cluster of a few neighbours bins blocking my driveway so I had to get out and move them on a busy main road, after a few months of this they recieved another almighty telling off from their boss after I filmed them doing it which lead to them stopping to bother emptying my bins at all for about 12 weeks! So basically I called the council one afternoon and said that they need to sent somebody to empty it in the next hour or I would take action, sadly for them they didn't get to me in time so I loaded the both wheelie bins into my pickup and took them and emptied them both on the nice new carpet in the lobby of the civic offices with a note saying they could keep them. -
Irish Ferries Sailed On Regardless - Aftermath Pics!
TeflonTom replied to FUBAR's topic in Off Topic Chat
This reminds me of the crossing from hell i had years ago from Le Havre to Portsmouth, set off in a moderate storm with only one of the engines running, storn got worse, people rolling round everywhere bumping into each other and things going everwhere, cars sliding about. We got blown off course and had to divert to Weymouth because there wasnt enough power to head into the wind on one engine. -
Topic moved to fabia section.
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Topic moved to fabia section.
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Jeez, the kevlar has started to delaminate on that, get it changed, something has contaminated that at some time like a water leak or possibly thats been sat parked up unused for some considerable time.
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1.3 pick up , coil pack
TeflonTom replied to morrispaul's topic in Skoda Favorit, Skoda Felicia, Skoda Fun and Skoda Forman
Sadly no i dont have a pickup any more, my mrs crashed it. -
1.3 pick up , coil pack
TeflonTom replied to morrispaul's topic in Skoda Favorit, Skoda Felicia, Skoda Fun and Skoda Forman
Hi morrispaul. Wasnt yoyr pickup the one where one of the ignition drivers failed inside the ecu i seem to remember? -
felicia lowering spring
TeflonTom replied to ms420161's topic in Skoda Favorit, Skoda Felicia, Skoda Fun and Skoda Forman
The front springs will be the same im the hatcback estate and pickup, but the rear springs are unique to the specific model. Estate springs will interchange with hatchback ones, but the pickup ones are totally different. Sadly there aren't many spring kits available for these any more, they've sort of become obsolete now, only the expensive premium brands still do them -
no further than low earth orbit... man has not been more than 400 miles from earth.
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yeah seen those grainy images before, the retro reflectors could have been put there any time. This isnt definitive proof in my opinion.. frankly the notion of flying to the moon in a glorified firework is absurd even with todays technologies.
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New focus rs - looks a bit pants imho...
TeflonTom replied to Exeterj's topic in General Automotive Chat
That's a real shame, i saw one of the old ones go steaming past me at 3am this morñing with the 5 cylinder engine going full bore. Awesome engine derived from a porsche design. One of the best selling points of the flimsy focus rs. They've probably gone and ruined it now then. -
New focus rs - looks a bit pants imho...
TeflonTom replied to Exeterj's topic in General Automotive Chat
I quite like that focus, does it still have the volvo t5 engine? -
Hi guys, im thinking about hacking up a computer power supply to use as a desktop power supply for electronics projects, plenty of regulated positive and negative supply voltages tapped straight out of the transformer. Was thinking using bullet style terminals for ease of connection. anybody tried this before?