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Most accurate signal generator
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KubaSO:

--- Quote from: loop123 on March 30, 2024, 01:18:36 pm ---
Are the inside of the RF step attenuator composed of resistor dividers?


--- End quote ---

They are. But the resistors you are using on your breadboard are the worst crap you can get. How can I tell? I got them too, exactly same ones, they look identical, probably from the same production line even. They are abysmal, much worse than reasonably priced brand name parts for reputable distributors.

For your application, you'll want metal film or thin film resistors, and buy them from DigiKey, Mouser, etc. Forget about Alibaba and Amazon for resistors. You don't know enough to buy basic parts from those cheap sources. These sellers prey on people like you and sell them junk. The less you know, the more you'll have to pay to get guaranteed performance. Simple as that.
loop123:

--- Quote from: KubaSO on April 05, 2024, 07:58:05 pm ---
--- Quote from: loop123 on March 30, 2024, 01:18:36 pm ---
Are the inside of the RF step attenuator composed of resistor dividers?


--- End quote ---

They are. But the resistors you are using on your breadboard are the worst crap you can get. How can I tell? I got them too, exactly same ones, they look identical, probably from the same production line even. They are abysmal, much worse than reasonably priced brand name parts for reputable distributors.

For your application, you'll want metal film or thin film resistors, and buy them from DigiKey, Mouser, etc. Forget about Alibaba and Amazon for resistors. You don't know enough to buy basic parts from those cheap sources. These sellers prey on people like you and sell them junk. The less you know, the more you'll have to pay to get guaranteed performance. Simple as that.

--- End quote ---

I got 2600 pcs of them. The product says 1% metal film, how do you test if they are metal film? perhaps by using magnets?

I got them because I couldn't find single piece 1% tolerance 1k Ohm and 1M Ohm to make a voltage divider of 10uV (microvolt) so bought a box in case I need other values too. At that time. I still didn't have the $1200 Netech EEG Simulator (which I bought for $300 used) so couldn't find source of 10uV. Now with my Netech and even if it has limit of only 50Hz. Thanks to gf (not girlfriend), I know that if the amplifier can resolve 10uV, 50Hz signal. It should also be able to resolve 10uV, 900Hz signal given the amplifier is set to bandwidth of 1000Hz.




loop123:

--- Quote from: ebastler on April 05, 2024, 12:11:58 pm ---May I suggest that you don't explore PARAFAC for the time being. In the hands of unexperienced users, it is a great tool to extract signals and patterns where there are none (of significance).

Come to think of it -- while the similarity of names is a coincidence, PARAFAC may indeed be perfect for exploring para-psychology and paranormal phenomena.  ::)

--- End quote ---

Thanks for the tips. I have to find PARAFAC experts then. The study involved 44 subjects with the g.USBamp connected to the 7 major chakras. I'll ask the experts the meaning of second factor and how patterns can emerge from 44 subjects. The study was done in Germany.

I've been thinking. Of all people in the world. the people who should be able to understand all these are electronic experts like you. So I'll share a bit of information where my 10uV, 300Hz to 2000Hz signal could come from. It's related to the chakras. What are they? Well. Since the dawn of humanity. Sex had occurred but the ancient didn't know about sperm cell or egg cell or DNA. So since the dawn of civilization. Chakras or multidimensional anatomy exists. The Big Bang didn't just create the physical universe. They created sentience substance too where our chakras are made of and link to our body and brain (or extensions of). Neurons can give rise to thoughts and memories and chakras are part of the complete circuit. And right now. We are like akin to understanding of sperm before the 1900s in the understanding of chakras. Only multidimensional electronics and circuitry insights can make the chakras become understandable. My experiences with chakras were so extensive, I repair them with hundreds of others who can perceive and work with them.  I am also an exorcist and medium. I remove entitles attached to the chakras and even host them in my body. The entities are like animals located in the dark matter universe.  Right now. Dr. Tiller has the most technical explanations of the chakras. He is dead already and if he is wrong. Then one needs to improve on explanations. The following is Dr. Tiller explanations. Please debunk them if you see errors. Only by debunking the untruth that equations akin to Maxwell Equations can be create in the science of chakras to advance science a century ahead.

These are what chakras look like for those who can perceive them like me and a hundred I know. I met them in healing centers like Barbara Brennan school of healing, Pranic Healing, and countless others.

 

 

 


Dr. Tiller explanation above of the multidimensional circuitry and the following of phase transitions in the vacuum initiated by humans. He has done countless experiments where he can measure the extra thermodynamics in the enhanced symmetry when subjects can change the vacuum at will and affect substances including making potentials measurable in the surface skin which I'm investigating with biopotential amplifiers.

 


The following is when entities from dark matter universe (that is sentient beings that evolve in the dark matter universe or other subtle realms) possessed humans via the chakras. Many crimes were committed with the involvement of these beings. When you take drugs or heroin, your chakras become more permeable to these entities and they eventually controlled you to commit crimes. They need to feed on the negative emotions that result from the immense suffering of the victims. like during Holocaust in World War II when millions of Jews were mutilated and killed. The entities feed on the suffering and right now they need another great feast and waiting for World War III. Knowledge of the chakras and control of them is what can make our society be so advanced we can resist the entities and make the world a better place. It's an emergency situation now.

 


Even psychologists like Scott Peck has encountered possessions as written in his book:

https://www.amazon.com/Glimpses-Devil-Psychiatrists-Personal-Possession/dp/1439167265

You were asking what is the source of my 10uV, 900Hz or (300Hz to 5000Hz). So I answered you in all of the above. And I need to give the information so anyone interested can just look into them without any involvement from me. I know this is getting off topic. I'd now focus on Mathcads so will seek other forums. I don't have much questions in the meantime here so will drop low now. I plan to build 1 nV/Sqrt (Hz) INA849 but it would be time consuming and need 7 channels at least so I'll just use the g.USBamp and get their $3000 software and $2000 active electrodes. There is no other choice not to investigate when the rest refuse to investigate.

shapirus:

--- Quote from: KubaSO on April 05, 2024, 07:58:05 pm ---They are abysmal, much worse than reasonably priced brand name parts for reputable distributors.

--- End quote ---
What parameters of these resistors are you referring to, exactly?
radiolistener:

--- Quote from: loop123 on April 05, 2024, 10:12:14 am ---Are you guys familiar with Parallel Factor Analysis (PARAFAC)?  What kind of signal and noise floor where PARAFAC needs to be used? In the g.USBamp experiments. 7 channels were used. Then Parallel Factor Analysis were used in the 7 channel data. When the second factor was done, the signals came out clearly. What is the meaning of the first and second factor in Parafac?

The signal is not exactly out of this world. The idea is akin to symmetry breaking in the Big Bang. In the very hot soup in the Big Bang. There is more symmetry and electroweak is one force. When the universe cooled down.

--- End quote ---

Our world has enough strange signals, so there is no needs to looking for signals from another world  :)

I just wonder why you decided that "The signal is not exactly out of this world"?
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