# Tag Info

12

The language used by the sellers of this device is not particularly scientific. It appears likely to be a placebo device marketed to (self-described) sufferers of "electrosensitivity". There is no scientific basis for these claims, and this device is unlikely to have any real function. The advertisement and sale of such devices has been prosecuted in some ...

7

What exactly is "dirty electricity"? This term isn't a technical one. We might say a power line is dirty if its voltage doesn't vary according to the 50 or 60 Hz sinusoidal waveform we normally expect. I understand that certain devices may draw electricity in aberrant ways causing it to spike/surge. What do we mean by electricity "surging"? It's ...

2

The old style flourescent lights, in which an arc has to re-strike at 120 Hertz, creates dirty (high-frequency content) energy on the local power lines. The fast risetimes of the arc, perhaps 10 microSeconds, (on scopes I've used, holding the scope probe tip up toward the tube some few feet above the lab bench) gets converted into radio waves by the wiring ...

2

A bit late, but perhaps useful for someone using LTspice on Mac: In LTspice, place an .op data label and save/close the file. Open the .asc with a text editor and locate a line that starts with DATAFLAG. Change the text inside the double quotes to another expression. E.g. exact voltage at the connected net as "$", "round($)" with zero decimals, "round(\$*1k)/...

1

No, not the capacitance. You are just measuring the effect of leakage current via the schottky diode as voltage when the multimeter completes the circuit with its impedance. If you use the multimeter to measure voltage over the non-conducting schottky diode, you will get very near zero volts, which means that both ends of the diode are at same voltage of ...

1

Well it depends, but just about every device running off a floating (rather than earthed) DC power supply already has both of its power input potentials relative to earth oscillating at mains frequency and at a good portion of mains voltage, merely staying at a fixed potential relative to each other - and obviously these devices are still operational. ...

1

Your approach and understanding seems to be correct. Without a multiplier you don't have the option to reduce the multiplier resistor value to increase the sensitivity. With such a low value resistance it sounds like a moving iron type (although I haven't looked at these for several decades). My old analog moving-coil multimeter was 20 kΩ/V and if ...

1

Your boost converter is not 600W. It says Output power: = Input voltage * 10A in the eBay listing. Therefore, 10A*12V = 120W output power. The laptop you have can use up to 19.5V*9.23A = 175.37W of power. If it does, the boost converter can't keep up and limit its output so laptop will see voltage reduction and switch to internal battery. Capacitors ...

1

It will probably last for ever. Thats not much over and for the short time of a shave. would not worry it the least.

1

I eventually used a Texas Instruments TPS7A4700 positive adjustable linear voltage regulator evaluation board to control the input voltage to the EMCO unit. The detector works and was used on the International Space Station to map the radiation environment in low-earth orbit. This option was more expensive than discrete parts. But the time saved by buying ...

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