50-60Hz

I understand that 50-60Hz is a frequency that can affect people with
ES, but can this frequency be picked up by metal objects? My computer
power supply is this frequency. Does anyone know if all power supplies
have this frequency, or are some different?

Richard

richsurf77 wrote:
> I understand that 50-60Hz is a frequency that can affect people with
> ES, but can this frequency be picked up by metal objects? My computer
> power supply is this frequency. Does anyone know if all power supplies
> have this frequency, or are some different?
>
> Richard
>

By definition, any power supply that plugs into the wall outlet, must be
50 or 60 Hz depending on your country.

The only power supply that is not 50-60Hz AC would be a DC transformer
connected to solar panel, and/or batteries.

Consider homes off the grid as a starting point. Everything is 12V DC.
If there were a power supply that did not need the inbetween (convert to
120V AC so it can convert back) to 12 and 5V DC for computer motherboard
etc. The conversion process, aka transformer, is typically noisy.

Stewart

> I understand that 50-60Hz is a frequency that can affect people with
> ES, but can this frequency be picked up by metal objects? My computer
> power supply is this frequency.

You may not be reacting to the 50-60 hz of your power supply, but rather
the *conversion* of 50 - 60 hz 120/220 Volts AC to some DC lesser voltage.
That conversion probably puts out a lot of frequencies which are side
effects of the conversion.

Marc

And those power supplies contain a transformer, which produces an enormous
magnetic field.

Greetings,
Charles Claessens
member Verband Baubiologie
www.milieuziektes.nl
www.milieuziektes.be
www.hetbitje.nl
checked by Bitdefender




----- Original Message -----
From: "Marc Martin" <[hidden email]>
To: <[hidden email]>
Sent: Tuesday, August 21, 2007 16:04
Subject: Re: [eSens] 50-60Hz

>> I understand that 50-60Hz is a frequency that can affect people with
>> ES, but can this frequency be picked up by metal objects? My computer
>> power supply is this frequency.
>
> You may not be reacting to the 50-60 hz of your power supply, but rather
> the *conversion* of 50 - 60 hz 120/220 Volts AC to some DC lesser voltage.
> That conversion probably puts out a lot of frequencies which are side
> effects of the conversion.

In addition, the DC output is not pure DC. Attach the output to an
oscilloscope and see the wave form.

Emil

Emil

--- In [hidden email], Marc Martin <marc@...> wrote:
>
> > I understand that 50-60Hz is a frequency that can affect people
with
> > ES, but can this frequency be picked up by metal objects? My
computer
> > power supply is this frequency.
>
> You may not be reacting to the 50-60 hz of your power supply, but
rather
> the *conversion* of 50 - 60 hz 120/220 Volts AC to some DC lesser
voltage.
> That conversion probably puts out a lot of frequencies which are
side
> effects of the conversion.
>
> Marc
>


So would it be better to have computer components which use more
power in total, so the conversion was not so big? Or would there
still be this conversion anyway, because of the different computer
components all having different wires going to them from the power
supply.

Richard

> So would it be better to have computer components which use more
> power in total, so the conversion was not so big?

I don't know if this would make any difference. I know that some
people here have claimed that it's better to stay away from
"switching" power supplies (ones which can use a wide range
of input voltages and frequencies) and instead use a non-switching
power supply (one input voltage and frequency), yet when I tested
a switching and non-switching AC->DC power transformer, my
Stetzerizer meter showed that the switching transformer
put less noise into the system.

Marc

>
> And those power supplies contain a transformer, which produces an
enormous
> magnetic field.
>

Indeed, transformers are nasty critters. If one
does use a transformer, the bigger the better.
Right now I'm using a 400 VA toroidal transformer
to power several LEDs, which consume in total
about 2 watts. A smaller transformer (15 VA) gave
me terrible chest pains and it was 15 ft away.

Eli

www.ahappyhabitat.com