No, I did not know such a thing. These machines have federal US approval and yet they deliberately reduce skin resistance (with gels or salt water), in order to send currents of the order of 100 mA from hand to hand [EDIT: just measured 400 mA with my device, amp meter is cheap though]. Some send a DC component too [as does mine, to keep the current positive for some reason].

With 9 V from hand to hand using those salted napkins I feel absolutely nothing.

Except the congestion in my nasal cavity magically disappears within 30 minutes or so. I have just had a winter without a single full-blown cold, for the first time in my life probably. This stuff works.

You'd have to let the cold proceed untreated for days for the microbes to latch in places where this crude machine cannot reach them, for this to fail. Then only sharp resonance would work, if at all.

Even if the full output voltage of the power supply was sent to the wet electrodes, that would be what this machine does anyway! You'd need to short the transformer windings to get a lethal voltage. What do you think are the chances of that happening as a component failure?

That would make sense with a battery as the second power source. Have you actually seen medical equipment like this, where you remove the battery periodically and dispose of it or recharge it separately? Despite the availability of the mains power supply?

When I went to class a very long time ago the number was something like people have been killed with as low as 50 mA going through the heart. I work with and have to be trained regularly on safe electrical use and the hazards associated with potential energy sources. I urge caution in your use of any of these devices.

I'd be shocked (pun here) that a machine such as this has any US approved use for medical. The homeopathic drugs get by only if they make no claim to medical. I guess these machines could have UL listed power supplies.

I wish you the best in trying to make yourself healthy.

Probably because the current is distributed throughout the body, to get 50 mA through the heart you'd have to pass 50 times more current from hand to hand.

Voltage doesn't kill.

Current kills.

I get roughly 10,000 volts just getting out a car... The shock for me usually goes up to my wrist, sometimes as far as my elbow. fortunately, the current is in the microampere level, and for a VERY short time.

Don't underestimate the value of adrenalin. It can do wonders. The placebo effect also works amazingly well for the frauds.

Hm. I quit getting colds on doctors orders - turned out I have an allergy to cold and flu shots (symptoms were loss of vision for up to 15-20 seconds), and directed that I not take them. I also quit going home every winter - family Christmas reunions turn out to be a major source of colds due to the presence of children with lots of different cold viruses :-)

Only if you have other return paths... clothes are also known to conduct, even if only a little. Also, you should know that conduction tends to travel over the skin surface (partly due to sweat), not through the skin. AC can penetrate - and cause other damage.

Human skin resistance varies a LOT. Some have very low resistance (me), some very high. If you wear polyester based clothes, you may have lower skin resistance (polyesters don't absorb sweat very well). If you wear cotten - the cotten itself will take some of the current (though a natural insulator, cotton does absorb sweat - and salt water is a good conductor).

And a 9 volt battery is more than enough to kill you (again the Darwin Award winner: http://www.darwinawards.com/darwin/darwin1999-50.html)

They may also have some undocumented current limiting circuitry involved too.

These things have been shown to be a fraud since the mid 1930s when medical testing started getting serious.

Hi,

Components do fail and most systems do not isolate from the original line source but do use switching PSU to source power to peripheral sub-systems thus a leakage current can occur that could possibly harm someone.

Please reconsider your use of the current techniques by you for experimenting with improper and hazardous techniques.

Please look at http://www.wipro.com/documents/white...ough%c3%b6.pdf Just some useful information that is valid and certified. No second guess but a standard. I notice in reading my original response that I used 10mA and noted as a typo. 10mA will causes muscle contractions and the person cannot let go (thus is called latching). Edit of post #30 to reflect proper 'typo 10mA to 100mA error magnitude issue '

You have been warned about potential hazards for your continued techniques. My mind is at ease since any fault will be yours for continued poor practices.

Hope this helps!

That's 60 Hz. The noise here is between 2 kHz and 100 kHz.

It cannot be felt at all. This is direct experience, not a copy-paste from a book talking about mains electricity.

The explanation is that we are dealing with nerves in live organisms here, not just resistors, inductors and capacitors.

Wonder if Canadian power is different? http://www.hydroquebec.com/security/effet_courant.html

Anyway, this post is falling away from what you asked originally. I assume this device is modern snake oil. However as long as you know about hazards from potential energies and understand how any device can fail for the worse then do what you believe may work. I've seen almost everything fail once or more times.

That just makes it easier to kill yourself. The higher the frequency the easier it is to damage nerves. And once damaged - they tend not to recover.

Back to frequency, if you do not mind? Below is the HPET accuracy statement. Is 0.05% accurate enough for you?

I do not buy that anyone here really cares for my safety, it is just a reflex action by people who feel like teachers and yet their perceived pupil is proving them wrong.

The spec for the most basic device I know of says +/- 0.25 Hz. That would be 0.25 / 2345.6 = 0.01% for my example frequency. Looks like the HPET is not up to the job.

Are there any more stable/predictable clocks in a PC? Maybe a program could write 255's and 0's to a sound card's buffer if it knows exactly when to do that, and where in the buffer to write. The HPET's lesser accuracy would result in jitter but in the long term that would average out. Would this work? Any similar scheme?

Also nope. Posting potential suicide actions can bring legal actions against the forum members that may contribute to the suicide.

Nope. Host CPU scheduling is subject to rather large latency (several thousands of instruction variations, to 10s of thousands). That is why handling audio buffers is handed off to a specific hardware peripheral. The clocks don't have to do anything else. It is also why synchronizing video and audio is a bit tricky. Both are subject to different lags.

That's from the age of 486's. Here something is suggested that I do not think you understand because it is too much of a programming topic.

Not understanding suggestions is the case with too many of your posts, such as the typical one about cells getting hit with... sound waves! It was electricity being suggested as causing resonance and death, probably by disrupting electrical signals in the targeted microbe.

You really need to learn some biology.

Microbes don't use electrical signals. They use chemical signals. Applying electricity pulls the chemicals apart, just like it does to any other cell.

Nerve cells use an electrochemical signal - provided by migrating ions selectively outside the cell. This generates a charge difference between the inside and outside. Nerve propagation is slow because it starts with a chemical change in the celluar pores that permit the ions to cross the boundary- neutralizing the charge difference. The location of this migration moves along the axon surface. The area behind the change begins migrating ions again, but it takes a fair amount of time before the charge difference is stable enough for another signal.

Natural propagation of nerve signals is quite slow: from 0.61m/s (pain sensors) to 119m/s (muscle positioning), with 76.2m/s (touch sensors).http://hypertextbook.com/facts/2002/DavidParizh.shtml

Applying external electrical signals disrupts the proper signaling (sometimes just blocking pain) by forcing the cells to pass confusing electrochemical signals. In all cases, the cell can become exhausted and die. Disrupting this signal in the heart nerves is what causes death - even with very low power currents.

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Yet another dump of high school basics as usual. Ignorant for example of microbe membrane potentials and the ability of nutrients to cross the membranes depending crucially on these potentials.

Also dishonest because it ignores evidence I have presented above from an actual device I have, where my nasal cavity clears within 30 minutes.

On this basis of my direct experience being ignored, and having NOTHING TO SELL, wtf am I doing pushing bioresonance to computer geeks. Especially to the high school graduate that poses as a medical expert.

To the mods: since technical discussions about timer accuracy are not possible any more, I am marking this topic as solved. Don't know it, it doesn't exist.