This was taking down 120AC to 10vDC? Nice one! How do you shield out all the muck from your router? I have a big Ali box. Then a bunch of ferrite chokes. I find the worst source of wifi comes in down the phone line. ADSL filters or ferrite will sort that though.
Have you made Faraday enclosure boxes for electrickery units? What works best? Copper Ali Foil paint or tape?
Each regulator input on the board needs to be 1.5-3V higher than the output voltage, and there are two of them (one on positive and one on negative). So 9/18V (parallel/series) should leave enough headroom to generate either 5V or 12V.
Plop Plop wrote
have the cat-5 cables wound around toroids. Not sure what this is???
It's the same winding technique that I use for my keyboard and mouse:
"Aluminum is a lot better for high frequencies, but 60Hz will go right through it. You need to do this for mains-frequency transformers:" Like I said on my 220vAC cables ali foil tape stops my electric field meter reading 1400 down to 0. Do you know what sort of field it is reading? I have tried asking every one and no one knows???
I had a wall of galvanised steel sheets but found that would not cut down my neighbors EMR noticeably at all. I had to move out. I will try to watch those videos. I am on a copper wire miles from an exchange in France so its very slow.
Do you know much about earthing stuff? I am ready to put in a new earth but keep wondering if I should do it differently. Lots of doubts??
I dont worry about magnetic fields I just stay clear of them as they don't travel far. I dont have a hard drive or use DC motors. My linear mag amp makes it but I stay away.
VERY different in cars though. Modern vehicles are stinking with magnetic fields that are killers. People should be warned and protected. Its like they want to kill all EHS. Seriously. The worst thing is that this effect every ones biology equally and is enough to clog ones blood causing accidents and killing etc.
The EU measure the average for a vehicle and not where the driver sits. I wonder who got the back hander for that?? It stinks! Have you seen the readings for trains????
Neighbors can be a huge problem.
Is there any thing you can put in an wire earth that will block radio waves coming in? Mine seems to be a very good radio antenna so Im not sure if its doing more harm than good at times. I only hold it at low signal times.
I have a EMR conductive floor paint covering my attic but I am not sure if I should earth it. Any thoughts? The science geeky ham stuff about this confuses me. Will it enable long wavelengths to short to earth better? I am sure it has already done some good as I have not had a bad evening since painting it. Before some days were terrible with my radio wave tinnitus.
Some one should write EMR protection for dummies.
I like living on 12vDC but its not easy. It is good to meet a fellow user. DC is a much better healthier way to be but only if you get it right. People do not seem to realise the dangers from dirty transformers. They probably do more harm to health than MWs. We really need standards for dirty electricity in France and the UK.
"double-shielded coaxial" seems to offer advantages. The surface effect is important for radio frequencies but for earthing I am not sure. No, I think you are right. The more I read the more confused I get. It seems like every one knows but no one does. Will long wave length short better with a ground earth? Logic says yes but I dont know. For MWs its not necessary. Waves under the size of your conductive surface should short at least in part. Does shorting cut waves? It seems likely to me. Why is all this so hard to find on the Internet? It seems the idea of shorting should not be mentioned any more. May be its not politically correct in the context of MW winging any more.
I would much rather short the stuff before it shorts in me.
I converted the fiber modem this morning. It all looks good so far.
The new board is slightly smaller in footprint than the other one, and I think slightly taller (from the PCB to the tops of the capacitors). The adjustment screws on the potentiometers are easier to access, but it doesn't have the handy through-hole contacts for measuring the setting.
There's also a mildly annoying blue LED on the board. It's probably a safety feature to prevent people from touching wires while it's turned on, but I had to cover it up with tape while I was taking under-load measurements of the output voltage and balance.
They weren't set to a sensible value when the board arrived, and I needed a bright light to read the part number and identify them. You have to flip the board over and measure the resistance across the pins as you make adjustments, and then you have to fine-tune it under load.
For the optical / fiber internet, I've heard complaints from sensitive people that the box which converts the fiber signal into regular ethernet is intolerable. So I'm hesistant to try that, especially since my current cable internet setup is tolerable.
Marc, I had the same concern when it was installed, but I had no choice in the matter. The owners made the call, and I just had to roll with it. It's better than the DSL we had earlier, but I can't compare it to cable.
I got more noise than I expected when I checked the new power supply with my AM radio, so I took it to the room where I tested the other one and used the same set-up. In those conditions it's very quiet.
It sounded worse than my Jameco AC adapter when I hooked it up to the modem, but my radio sometimes has trouble picking up higher frequencies when it's near a transformer. I'll have to test again with the transformers farther away.
Yes, for me, DSL was the worst, and it got progressively worse as the speeds increased. For that, the telephone wiring throughout the house was causing me issues. Cable was a big improvement, especially when I installed a ground-loop eliminator (as my cable and the electricity have different ground sources).