My ALTARIA ))

[Экко]

For our purposes, looked good on the generator NE555 timer, flash nothing. Is stable and has a wide range of frequencies, you only need to change the parameters of elements, operating on a voltage over a wide range, lower limit frequency = 0.01 Hz! Top don't know, I think not less than a megahertz. So it is possible for Alfario and neurophone, though for what adapt. The device collected works, checked on the oscilloscope, there is only determined by the parameters of the driving elements.

http://rosdetali.ru/content/view/460/29/1/6/

and here is the program to calculate the parameters http://depositfiles.com/files/fv0svo11d

[Гостьььь]

You, dear, better try another - podkluchit your matchlock to the contacts of the control unit of the engine of any car. And then try the engine start))).


OK, that was a bad example - electronics is a subtle thing, not something that your head. What the head-there will be bones after all Kashchenko taxis

[Экко]

the engine control unit of any car

there should be the circuit breaker that supplies current candle step by step in a circle, so it's ttut is not the topic

OK, that was a bad example - electronics is a subtle thing, not something that your head. What the head-there will be bone because Confused Kashchenko taxis Shocked

what do you mean?

[Тапка]

Hostile - a go-ka You are respected IN the ASS with their control units, motors and let us do megativity!!!! IMHO .....

[Михаил_]

By the way alfaria (this) a rather unusual signal, similar to ... not a periodic sequence with a stepped change in the amplitude. Ie is not a square wave, although perhaps a strange form of the signal only related to the curvature of the output(and what I see on oscilogram it's just the chattering of the output), but I don't think so.
So much I'm not sure on the theme 555.
most will fit any device with access to the DAC, to complex shapes to draw on the signal.
Why don't DC square wave I think you can guess if you've read the explanations why Patrushev constantly changing frequency in the sessions mindmachine.

So the easiest device would be suspended from the DAC to the PC and the software to manage them. Or poster microcontroller (now there are full on makedah interface), or stupid printer port and DAC (sorry the add ports now not everywhere, but there are external controllers).
But maybe I'm wrong on the subject of the variability of the signal.

[Экко]

Michael_
you have a waveform with this Alfaria? if it is easy, upload the pictures from the oscilloscope.

[Михаил_]

Later. ALTARIA in the city, I'm not in it...
Since the inside of the microcontroller, and the signal doesn't want to sync properly, you can say that the controller turns the signal parameters.

[Экко]

it would be nice to see frequency changes or pulses? and so it is possible to make a program for PC running through the soundcard

[Тапка]

Vovo - we have the identity of the controller turns the signal parameters ,our razrabotchik said Schaub Mosk was not used to.

[Экко]

Wowo - we have the identity of the controller turns the signal parameters ,our razrabotchik said Schaub Mosk was not used to.

and what options cool? I think it's just the frequency, but the shape is always the same - a rectangle?
I now got the idea: submit to the brain of the AM modulated low frequency carrier signal well, let's say 1000Hz.. wonder if will be better?

[Андрей Патрушев]

Here for you a lot of useful material:
http://tes.spb.ru/Publications/Publicat ... outTES.htm

[Сергей Владимирович.]

Good day, friends!

I propose to abandon creation of the device TES on the basis of "Alfaria". What are you, in fact, fixated on her? Camera with unclear and unscientific stimulation parameters, "stripped" with the "bourgeois" instrument "Alpha-Stim". Let's finally create a device which has been used for a long time checked the power parameters of stimulation, whose effectiveness has been proved by many clinical trials.

Again quote the required parameters:

For electrosleep used a constant pulse current of a rectangular (or almost rectangular) shape. Pulse frequency from 1 to 160 Hz, the pulse duration is 0.5-2 MS, the amplitude of the current to 5-10 mA. Central electroanalgesia used a constant pulse current of a rectangular (or almost rectangular) in shape with variable and continuous duty cycle. The frequency of the pulse from 160 to 2000 Hz, the pulse duration is 0.1 - 0.5 MS. The average value of the pulse current to achieve the sedative and electrotransmission effect is 0.8-1.2 mA, for pain - as tolerated by the patient current (3 mA). The sedative effect is more pronounced for frequencies of 200-300 Hz, electrotransservice - at 800-900 Hz. The analgesic effect occurs at frequencies above 1000 Hz with a constant duty cycle.

In addition, the instrument developed by the Centre TPP of the Institute of physiology. I. P. Pavlov of the Russian Academy of Sciences (a link to which kindly provided Andrew Patrushev), is used as a sequence of single pulses and bursts of pulses; a bipolar current, etc., but in General, the stimulation parameters are similar to described above. It should also be noted that the Center of TPP, using rules of evidence based medicine and screening tests, it was found: the maximum increase in the concentration of beta-endorphin was observed in the effects with parameters that coincide with points of quasiresonance TES – 70 Hz for animals (rats) and 77 Hz for humans. In this regard, the instrument developed by Centre of TES, mainly uses the following parameters impact on the patient: the maximum current - 3 mA (in some devices up to 5 mA); the pulse repetition frequency (or pulse train) - 77-78 Hz; optimum duration of the pulses (or bursts) of about 3.5 msec; pulse shape rectangular rectangular monopolar or bipolar. Method of applying electrodes - the fronto-mastoid. More detail here: http://www.tes.spb.ru/Presentations/cd.pdf
By the way, recently the Centre TPP of the Institute of physiology. I. P. Pavlov Russian Academy of Sciences has released a new portable device "......(find your own, and then delete all the message for advertising)......", the cost is a bit higher than that of "Alfaria", but also, in my opinion, unjustifiably high. However the credibility of this centre and its instruments still more than "Alfaria". Again my personal opinion.
Given all the above, I propose to have a device where you can set stimulation parameters within a wide range according to specific goals. Ideally, I would like to make the device on the microcontroller with the possibility to ask for the required frequency and pulse duration parameters of pulse (single pulse or pulse packet), the total time of exposure. And to set the necessary parameters it is assumed the control console of the device and requires the LCD screen. But since I'm not "friends" with microcontrollers and programming, it serves as a master oscillator to use CD/FLASH player with the ability to play uncompressed audio stream in WAV format. To generate a signal with the specified parameters, and then save it in audio file using the program "Adobe autdition".
Now, regarding the magnitude of current stimulation. The lower the pulse repetition frequency, the greater the amperage required. With the increase of the pulse repetition frequency increases the irritant effect of the current. Therefore, the current should be reduced to a certain value. Also not advisable to use single pulses and packets of pulses, with a frequency of fill packs every 10-15 kHz, which will also reduce the magnitude of the current and reduce its irritating effect. I propose to set the maximum value of current is 3 mA, with the possibility of smooth adjustment. According to some, the resistance value of the skin, measured between the points of application of the electrodes (used in the frontal-mastoid method of electrode placement), is an average of 5-7 ohms. Therefore, the voltage to be obtained across the electrodes of the instrument, is equal to: U = 5-7 kOhm * 3 mA = V. 15-21 Propose to measure the own resistance of the skin. To do this, take the battery with a small and pre-measured with a voltmeter EMF. Electrodes from a battery to attach to specific areas on a man's head through the water-wetted pads. In the thus obtained chain to turn on the milliammeter and measure the current. Finally, calculate according to Ohm's law the resistance of the skin between the electrodes. Based on the result to set the required voltage at the output of the device.

Sincerely, S. V.<

[Экко]

Finally, to calculate by Ohm's law the resistance of the skin between the electrodes.

just get a tester?
by sabzh: it is Necessary to first determine what kind of device do? I see mostly Electric, but I want to do something different. Interested in the frequency 77Гц. WAV files I think are not needed, unless you want to do complex signal, in other cases, enough hardware solutions.
So determined by the device's specific parameters and make the device

[Сергей Владимирович.]

just get a tester?

Well, for example, the electronic multimeter (in ohmmeter mode) lacks sensitivity for measuring the resistance of the skin.

it is Necessary to first determine what kind of device do?

To make a universal device with the ability to set and modify the required parameters.

I think WAV files is not needed, unless you want to do complex signal, in other cases, enough hardware solutions.

WAV files are the only way (unless you use programmable IC) to generate a signal, including complex shapes (the pulse consisting of high frequency bursts; a change in pulse duration or bundles; experiments with different pulse repetition frequencies; finally, the setting of exposure time).

[Guest]

Sergey.
Well, if you want to make a universal device, tell us how you intend to do.

[Экко]

Guest I was. Right now held again experience with the low frequencies (< 30 Hz) the effect is not felt, but must have a comfortable position to provide, duration, etc.

[Сергей Владимирович.]

Here it is! Finally I found THIS!
http://www.telesys.ru/electronics/projects.php?do=p072

[Экко]

Here it is! Finally I found THIS!
http://www.telesys.ru/electronics/projects.php?do=p072

Of course, a good thing, BUT it's just a generator without the ability to set the time, create sessions, changes in other parameters in time. Work will need to do much, but the result will be different only almost display from the generator on a single chip or 2-3 transistors. And the same pulse packet can be done in hardware. I just took the transistor, through it passed a high frequency (pulses), and the base was applied modulating low frequency signal.

[Тапка]

damn, I do not understand - does not work for you alfaria homemade???? me Isho )))

[Экко]

damn, I do not understand - does not work for you alfaria homemade???? me Isho )))

yeah something not right, flashes before my eyes go, and there is no effect.. but I will probyvat

[Тапка]

flash is when the current is very large ( personally I like).

ECCO mozht you're doing it wrong ???? Will upload waveforms to your alfaria soon.

[Экко]

well, I made a rectangle with an oscillating frequency in the zone of the alpha rhythm.
Sneaker and through what time starts to operate on you wearing that thing?

[Тапка]

On me strictly after 5-10 minutes , here's a video of the oscilloscope ( sorry for the roll over - from mobile phones to sensor position glucid infection) ---- http://slil.ru/29610213 .

Waveform amplitude jumps the courts , not sync - this is probably the result of frequency change .

[Экко]

the usual meander on oscillogram
It would be interesting to remove the waveform from the present Alfaria, not oscillum, and a recorder.

[Тапка]

Comrade, there is one sort of promised to take a signal with his Alfaria........