Primary = 14turns (cw) - L : .5mH
L2 = Turns : 32(ccw), second layer 31(ccw), 21(cw) - L : 4.34mH
L3 = inverse of L2 - L : 4.53mH
Prim cap = 2.15nF
Yellow : L2 current over 1 ohm resistor
Blue : L3 current over 1 ohm resistor
Measurements are not in any way considered accurate, was looking to find effects I looked over so many times in the past. Still alot that could be improved I'm sure, this is without any capacitors on secondary. Any tips where to go from here?
Hey AlteredUnity,
Nice work, Thank You for Sharing!
Follow threads here: Builders Guide to Aboveunity Machines
Aim for Asymmetrical Regauging:
This video shows the basics:
Consider for a moment the construction of the triode which includes the bifilar coils located within the fields of the two conditioned magnets.
When the current in one half of the conductors in the coils (i.e., one of the bifilar elements in each coil) of the device is moving up, both the current and the magnetic field follow the right-hand rule.
The resultant motional E-field would be vertical to both and inwardly directed.
At the same time the current in the other half of the conductors in the coils is moving down and both the current and magnetic field follow the right-hand rule.
The resulting motional E-field is again vertical to both and inwardly directed.
Thus, the resultant field intensity is double the intensity attributable to either one of the set of coil conductors taken singularly.
Expressed mathematically: E = ( B x V ) + ( -B x -V ) = 2 ( B x V )
We are here, do the reading and studding, we will help you! Like Floyd Sweet said, you need 2 B x V.
Best Wishes,
Chris
Going back to try to get it right, I tried the two different configurations in the "Reduced impedance effect" experiment, these are the results I got. Yellow is current, Blue is voltage. One configuration isnt drawing alot of current from source, but scaled up looks like long liniar increase, and same with decrease. Is there an issue with coil interaction there, or is this something I should be seeing?
Hey AlteredUnity,
Did you get time to read my above post?
Best Wishes,
Chris
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Hi AlteredUnity,
Please review my Series: Chris's Non-Inductive Coil Experiment:
11 Videos in total.
There are several things I can recommend to help further:
You are Close, I think you only need to observe a few simple things and this will give you a big leg up.
Observing and Studing the Ramp Up Area will help emmensely:
The Cause of this is:
At Time t = 0: we have no Conduction in all Coils in our machines. No Current Flows.
At Time t = 1: we have Input Coil Conduct with the Switch On of the Mosfet, Current Starts to Flow.
At Time t = 2: we have Electromagnetic Induction between your Input Coil and POCOne , POCOne Conducts when the Diode Voltage is at threshold Voltage, normally 0.5 to 0.7 Volts.
At Time t = 3: we have Current Flow in POCOne, this Current starts to Change in Time also, Electromagnetic Induction occurs between POCOne and POCTwo.
At Time t = 4: we have POCOne's Current induce sufficient Voltage in POCTwo and then at 0.5 to 0.7 Volts, POCTwo then Conducts.
Here you can see, we have a Delay in Conduction, the Coils are delayed in Time T, and as a result, they Slap Together, which is Electromagnetic Induction in your Machine for a Second Time!
The Answers are right infront of us, we only need observe with an open mind.
I could not help observing the Resonance Coils which look like the Coil which Rick Friedrick sells? Also you are using Don Smiths basic Circuit.
I saw your posts on ou.com Here, the story behind this is Here.
We are willing to help AlteredUnity, if you can study up a little, follow the guidelines and we will have you up and running very soon! CaptianLoz will attest to this.
Best Wishes,
Chris
Yea wasn't aware ur site was back up, so posted under ur topic, of course no actual help was obtained. I will go back through your series. Yes those are Rick's, going through his pamphlet of preaching, and premade coils helped test settings, and effects. Although I was able to assemble circuits it just let me know I still have no idea why these things are happening, so started going through, Art of Electronics labs. When you say my probe was connected wrong, that's what I thought but, probe is connected between right after diode(cathode side) before resistor, and ground to other side of resistor. Then I was looking a picture of Gundersons wave, you said was upside down, tho mine do the same? I have precision resistors, I will set it back up and try different/better setup. I always try to incorporate Don's, reading through his book, as u can see formula for cps at top.Thanks!
Hello.
Nice work.
Place a 10k resistor to the Base of the mosfet and ground.
That will discharge the gate of the mosfet faster to ground.
I see that you got L1 in parallel with a capacitor.
Do you know the effect of parallel LC resonance ?
Chris has said in many of his videos : ""The CURRENT in L1 will induce a voltage in the POC "
No curent in L1 ...no voltage or very little in the POC.
I wish you best of luck.
*Melendor the Wizard
Hi AlteredUnity,
Youre doing a really good job, so be proud of how far you have come already!
The Copper Electrons in each Atom just need to be push a little, the Bucking Magnetic Fields of the Partnered Output Coils do this. Youre on the right path, keep at it and success will come your way soon!
Thank You for Sharing, looking forward to seeing your next experiment.
Best Wishes,
Chris
Yea wasn't aware ur site was back up
Hi AlteredUnity,
you should join the secondary forum we're using for updates, this way we're in touch when/if AboveUnity forum is down:
https://free-energy.proboards.com/
Please use the same name like here when registering there and I or Cd_Sharp will know it's you and we'll approve your join request.
Regards,
Fighter
Setting up lil better circuit hopefully will have results today, implementing 10k resistor from base to ground(going to use gate driver as well), until I can put together setup CD_Sharp recommended.Will register soon, thanks fighter. Appreciate all the pointers everyone!
Here's a couple more test I've done before switching to thicker primary(with 1 channel of new board - Quadratron - Thanks cd for recommendation. Started tearing first board apart thinking I shorted something, turns out I put mosfet is backwards). First two pics are 11.1khz, 9% duty cycle. Blue is current over POC1(with load), yellow is current of POC2.
The following pics are at 3.2khz with 6% duty cycle. The last picture, while slowly sweeping frequency, I hear a small click and my scope went haywire, but still got sawtooth forms in there haha. Unfortunately I didnt have time to change or add loads, but I know theres room for improvement, figured I'd try thicker primary, step voltage up, add load to L3 etc.
Hi AlteredUnity,
Great work here!
I hope you're learning a lot in these experiments?
The last image you posted is a significant image. You can see a significant effect.
Please note: In your Image, this can be cleaned up significantly, adjusting Frequency and Duty Cycle, aiming for maximum Output Amplitude, V B and I. In other words Resonance.
We have seen this before, on the thread: The Rotary Transformer - Tinman
Here is the image:
And the Videos:
AlteredUnity, study in depth what you have. Look at the Magnetic Field of each and every Coil! Look at the Strength and also the Density, remember small cores are limited to very little Flux Density.
Improvements are easy and cheap, so look at where improvements can be made. Shorter Coils with a much greater Cross Sectional Area ( CSA ), as B is dependent on the Coil Length.
However, study what you have for as long as possible! Also don't forget, all answers are here on this forum!
Best Wishes,
Chris
Haven't had alot of time to examine the details from my last circuit like you recommended Chris, but i noticed in my photos, other than the one you pointed out, i wasnt getting a whole lot of current through my L2. I rewound the primary, spacing turns out a bit more. Also L1 covers about 2/3rds of L2. The noise was hard to deal with even to click on for a picture lol. Yellow probe is L2, Blue is L3. Hope im on the right track. First picture is circuit(from https://www.aboveunity.com/thread/how-to-build-your-own-above-unity-machine/ thread). Last picture is where i noticed im close and got the feel for what should change-frequency or duty cycle(and visual from scope lol), then both currents spiked fully filled sawtooth. Most frequencys before that where super noisy(on scope) and nearly no amplitude.
Input shows 8v @ 158mA. At 1khz, 14% duty cycle.
Next step, seperate coils, see what each one is doing, and what i can do to improve that. Still using alot of power, can prob reduce duty cycle.
I see the N pole on the primary is going same direction as secondary, so also bucking L3(not assisted by it)?
This circuit seems to assist the primary in a big way(from using 5.4watts to 1.9watts with L3), in the video I believe all the N poles point same direction. So circuit isn't quite right. When set up correctly was I burning through a lot of diodes, 1-2amp 1000v rating. I didnt think i was getting that much on output, tho my oscilloscope was showing it(just not in sawtooth like way, and no "mean" value, only rms) - does that matter when output should be dc from bucking coils? -. I do see the input voltage drop to 13.99, when L3 is connected, not sure if thats ok or negligible.
The pictures following are some older pictures I've taken, and probably was moving too fast to realize what I was looking at, tho they are a couple of my favorites(circuit is correctly opposing magnetic fields between L1&L2, as well as L2&L3.)
Top - Yellow: L2 Voltage; Blue: L3 current
Bottom - Yellow: L2 current; Blue: L3 current
Hey AboveUnity,
Great Work Thank You for Sharing!
In this image, you have the Actions correct:
At this point, I would like to suggest several things:
The next step is more Turns on a Bigger Core, bigger Cross Sectional Area, can help increase your Output.
If you keep going with these excellent experiments, I will put your name forward for our Elite Builders Club!
Best Wishes,
Chris
Thank you. I will set back up shortly. The images before are with a center tap and both outputs joined. Got faster mosfets on the way(wolfspeed i think).
Finally got a bigger core(AMCC-0200 HITACHI): haven't had a lot of time so quickly wound 2 custom made bobbins(from cut and glued pieces of plastic screw bins)- would like to order a set like Jagau used though haven't had time to see what that'll take to get.
Just ordered more wire for L1 didn't quite have 20ft of AWG#14, so used #16 temporarily with 19 turns.
L2-cw(Yellow: voltage, Blue: current over .1ohm), with Load.
L3-ccw(Pink:current over .1ohm)
L2and3 are 80ft of #20awg around 145turns each.
Quick setup will be coming back with tuned circuit and thicker L1. Question about new 4ch scope(Ds1054z-upgraded), if I wanted to take input measurements at same time, like for the gate or drain of mosfet, do I need to leave ground of that probe disconnected still?
HI
Another way to take measure across shunt resistor is differential mode probe. its the one i use.
See it here:
https://articles.saleae.com/oscilloscopes/how-to-measure-current-with-an-oscilloscope
Jagau
Differential measurement could be done with analog oscilloscope too
watch here
And with DSO oscilloscope using math menuis the same.
Jagau
Thank you, I was aware of the differential mode probe, just wasnt sure how others with a 4ch scope where doing it. Though it just dawned on me I can isolate my old oscilloscope(or just use the two prongs on power cable) and measure the input with that as well, pretty sure that should work too correct?
Another thing for anyone who may know, while measuring input, the measurement thread covers current measurements, but if I'm putting in 12v, do I multiply that by the current, or do I take the average voltage of the pulsed signal and multiply that with the current? Logic points me to the latter, if that's the case than there are quite a few experiments I need to redo, because I normally just lazily go with what my buck/boost converter tells me.
Hi Alyeredunity
You will find all the information here on our website.
https://www.aboveunity.com/thread/measurement-block-pcb-and-kit-on-e-bay/
Jagau
As you see picture, I am using that same measurement block, they are great. My question has to do with measuring pulsed input, not so much how to take the measurement, the thread does cover that very well. I'm pretty sure I answered my own question as I was typing it last time though. Thank you.
This circuit seems to assist the primary in a big way(from using 5.4watts to 1.9watts with L3), in the video I believe all the N poles point same direction. So circuit isn't quite right. When set up correctly was I burning through a lot of diodes, 1-2amp 1000v rating. I didnt think i was getting that much on output, tho my oscilloscope was showing it(just not in sawtooth like way, and no "mean" value, only rms) - does that matter when output should be dc from bucking coils? -. I do see the input voltage drop to 13.99, when L3 is connected, not sure if thats ok or negligible.
The pictures following are some older pictures I've taken, and probably was moving too fast to realize what I was looking at, tho they are a couple of my favorites(circuit is correctly opposing magnetic fields between L1&L2, as well as L2&L3.)
Referring back to this circuit, we see that the load is drawing about 5.4 watts from the primary. (If I have time to get on computer I'll check actual values and post impedance, turns ratio, other math, that the aboveunity member calculator would easly show), but I believe it does show the Reduced-Impedence effect pretty well. As a standard transformer, with the load applied, we see an impedance mismatch from primary to secondary, causing it to use more current. I asked if the voltage drop when I plug L3 in (from 14v to 13.99v) on my power supply was ok, even tho the current usage dropped from 0.392A to 0.137A. From what I understand this is fine, tho it now shows there is too little impedance on the secondary.
I move way too fast without grasping what is actually going on, so not so easy to redo since I've already already altered most my coils.
But if the load impedance has stayed the same, the turns ratio the same, then I think it shows a great decrease in the coils impedances.
From Circuitdigest:
"Voltage is lost due to mismatch when Load impedance is less than source impedance, and current is lost when load impedance is higher than the source impedance. "
I may have it wrong or backwards, please correct me if so.
Hello AlteredUnity,
I left a message on your YouTube Channel, hope you got it? It appears YT is blocking me again.
Great Work, study the Fields, as you say! You will see the required effects to bring your input right down, but still have the same Output!
Amperes Law is worth studding also, as this can help you bring the Input down. Well done! Isn't it easy when one has the right understanding!
From what I am reading, you have it all correct! You have the Correct understanding!
Isn't it so extremely easy! And cheap! Shame so many Trolls are trying to paint an impossible picture on such a simple Canvas!
Best Wishes,
Chris
Appreciate the feedback, and no I don't think your message went through on YT. It definitely helps to be able to look back, and reference things I didn't understand at the time, along the many videos you made explaining most of it. Another reason i appreciate the community and standards youve integrated, on this forum. I don't understand trolls, or putting effort into anything that would delay progress. Looking back I see a trend of moving forward without grasping what I'm looking at, and could've easily approved upon(like the first circuit i posted with amcc-0200 core with 16awg primary, was almost unity, tho didnt bother tuning further, just assumed results would be better with thicker primary, though that hasnt been the case yet.). Hopefully I won't have to wind many more bobbins to get results on this amcc-0200 core. Will hopefully have something to show soon.
Hey AlteredUnity,
I recommend to stick with the one set of Bobbins once the initial Experiment is understood, as you have done.
The Magnetic Field of POCOne is the place to start! Amperes Law shows us that the Magnetic Field from BMin to BMax can be Calculated:
Of course, this video is a start, the Thread: Coil Geometry gives the answers for the Coil Design.
Best Wishes,
Chris
My Friends,
This Thread needs more Focus, but the Melnichenko threads also need attention...
The Magnetic Field of POCOne is the place to focus because, we have a Source of Energy that is normally ignored, lost, and thrown away.
In Faradays Law Equation:
POCOne provides the: dΦb part of the Equation for POCTwo, which is the Voltage "Generated" in POCTwo! If dΦb of POCOne was 0.5 Gauss to 5000 Gauss, this is the Delta from BMax to BMin, then this is a very good Source of Energy! Right?
POCOne dΦb = 5000 Gauss - 0.5 Gauss = 4,999.5 Gauss.
POCTwo, has turns N, and this again is seen in the Equation. Of course the Sine Opposite ( - Negative Sign ) gives us the Bucking Field we need!
POCTwo, has a Magnetic Field that is In Phase with the Input Coil, it Assists the Input Coil, and as a Result, the Input Coils Impedance increases and the Input Current Drops as a Result of the Impedance Z going Up!
The End result is: POCTwo assists the Input Coil, but Opposes POCOne. Think about it, if: POCOne Opposes POCTwo, then one of the Coils MUST Assist the Input Coil! Right?
This is Asymmetrical Electromagnetic Induction! An area Science has entirely Neglected and Ignored! A new and proven area of Science that AboveUnity.com has introduced to the World!
Best Wishes,
Chris
I appreciate it Chris, I know my contributions are coming slowly, but all the pointers and tips you've gave helped a lot. Not exactly going for AU at the moment, I see I have a bit more to comprehend. Tho I may have come close, or even achieved a COP above 1, I couldn't confidently do it again, nor explain why. So now I should be able to associate things that I never factored in such as impedance, magnetic field strength, -timing-, regauging, etc. It's amazing the amount of info in Tesla's patents that states the interaction and importance of timing and tuning - all without seeing actual waveforms(until his custom oscilloscope), though everything that you are trying to get across. That's why I'm getting how you feel towards these clowns(trolls).
Hey AlteredUnity,
That's why I'm getting how you feel towards these clowns(trolls).
Agreed! I know some in the Electrical Engineering Industry for 50+ Years, they can rattle off every Equation in the Industry, however and cant even Switch a Mosfet Properly! So many of the most impressive Memories cant even bust themselves out of a Paper Bag when it comes to actually doing it, or even addressing New Technology! They can ONLY memorize what they have read in a Textbook, that's literally all they are good at!
Its just a case of focusing on the Definitions of the Ingredients and mixing the Ingredients in the right order!
What creates a Voltage?
What creates a Current?
We know how this works, its easy, and the Input Coil does not need to be the Primary Force, only the Excitation, where all real Force occurs between POCOne and POCTwo.
A lot of people know very little to nothing on Power Engineering, even the Goon Squad! Why cant they debunk me? Because it Does Work as I have said! We have MANY Replications! Many that have been Successful and very FEW that have not succeeded!
Trolls cant be seen to Succeed when that are busy trying to make something look like it doesn't work now can they? That's why Trolls can not ever succeed!
Best Wishes,
Chris
Here's something to post, since it's been a while. Only now, while working with this configuration do I actually have all fields pointed in correct direction. (P.s. you may have to flip the primary polarity as well as both secondary polarities to get better results. I see Melendor in a past post advised how the current should flow, it looks as if(I may be wrong) in his configuration, on his replica, he in fact had to do what I've done and point the diode on L2 in the opposite direction, which has given me the same sawtooth wave. Though, flipping primary and both secondaries has indeed implemented what he was saying.
Now I see several post the load should be measured with RMS, and the input with Mean. So with the pictures provided,
Input is at 2.53khz @ 6% duty cycle.
Yellow=> Ch1 - Voltage over load
Teal=> Ch2 - Current over load
Pink=> Ch3 - Current on L3(inverted because all grounds connected to same place)
Blue=>Input voltage(differential probe on drain) - (believe Jagau recommended)
I will attach photos as well to make them a bit more clear. Yes I'm using my cheaper power supply during testing, trying not to blow my siglent one(powering driver board).
So I've always measured output with Avg, not RMS. With these results, though still a tone of tuning can be done, does it look like I'm still .5 watts from unity, or 1.5ish watts above the input?
Hey AlteredUnity,
Excellent Progress My Friend!
Yes, you're Right:
Only now, while working with this configuration do I actually have all fields pointed in correct direction. (P.s. you may have to flip the primary polarity as well as both secondary polarities to get better results.
The Polarity's need to be adjusted so all work in the right direction, and the Tertiary assists the Primary! The more assisting, the less Input you use!
Because the Scope Traces are not all visible on the Screen, I cant comment with accuracy. But, you're Looking Very Good My Friend! I believe you're Right On Target!
When you're satisfied you have the right Config and a Successful Result, I will mark your Post: ABOVE-UNITY!
Best Wishes,
Chris
That would be great to achieve, this is just a test showing progress, I have not calibrated my scope, nor measure the input with scope. Other than the pulse on drain of mosfet. But just listing few things off so I don't forget when I'm ready, and confident. Any chance I can edit my above post, "its been a whole" should say "it's been a while." No biggie if not
Hello Team / AlteredUnity
Can you please place a 0.1 Ohm Resistor on the Mosfet to Ground of power supply ?
You have 4 channels , and to see the INPUT current of L1 is very important.
From what I understood from Chris , the Current of L1 goes UP UP UP...and after that it goes into a straight line.
You must adjust the duty cycle , so that that Straight line is not visible anymore.
The Change in Magnetic filed of L1 , creates a Voltage on L2.
If the Current is not changing ...and goes in Straight ...no additional benefit will be present on your output coils !
(hope I understood correctly)
Keep up the good work.
~~~ Melendor the Wizard
Hello Melendor,
The Input Coil that, because of its Inductance, will have a Current that Ramps up in Time!
Five Time Constants represents Maximum Current, then no more Current Increase occurs.
At this point, ideally, the Input Coil is switched off, its done its job. No more work can be done by the Input Coil and all Work is not done by the Partnered Output Coils!
Yes, anyone can measure this, as you have suggested: "place a 0.1 Ohm Resistor on the Mosfet to Ground of power supply", is the correct method to achieve accurate measurement!
I am sorry for the initial misunderstanding, I saw a path of Confusion appearing.
Best Wishes,
Chris
Will do. I have a current probe, but with the pulse width, as you can see with cursors I placed, with duty cycle of 6% = ~33khz, witch is a little high for my 20khz probe, so I will reset it up and use my differential probe to see the input current(tho i don't quite trust results of that probe for some reason over a .1ohm resistor, so may just make separate measurments at a time, thatll also let me know if ground was needed on output) and do as you recommend to get a better look at what is happening(like I said, move too fast/already altered my set-up....again haha - *because I know there's more I can get out). Also im pretty sure measurements are more accurate using less channels on this specific scope. But your absolutely right Melendor, that is something that has slipped my mind(L1's current) should be paid alot more attention. It can tell me a lot as I make adjustments to my coils. You may be able to see one side of my printed bobbin broke, luckily wires stayed in place so just tape holding it in place. May put L1 on other coil so I don't risk messing it up. Also will have 2 primaries in place that may be driven in which ever manner.
Thank you.
Small update, nothing great, but looks to me these LEDs are lighting a lot better at this voltage then on straight dc with the same avg. Voltage on the output. The output bulbs are 1 x 5w bulb in series with 2 x 2w LEDs(in parallel). I put a 50v 100uF cap across the LEDs for measurment. Still can't power any real loads, though have a few approaches in mind. This is just quick update, haven't calibrated scope or anything, when I'm ready to show some real results I'll come back with input and output, also use my siglent p.s to compare to.
Ch1: Yellow - output voltage
Ch2: Blue - output current
Purple or pink in the pic is MATH CH1 X CH2
Hey AlteredUnity,
This is great work mate!
You have the Effect there, and have had the effect for some time now. There is a learning curve here, it takes some time, but studding the actual effect will bring more insight. You have the Opposing Fields:
Poles Opposing, the Magnetomotive Force of Opposing Poles, just as an Electric "Generator" does, the Delta B, the Change of the Magnetic Field, Separates Charge to produce a Voltage, the Magnetomotive Force of Opposing Poles, Pumps Charge, which is the Current!
There you have the basic, fundamental process, its exactly the same as an Electric "Generator", only its Solid State, it uses Magnetic Field Modulation and not a Rotating Rotor! Just as Clemente Figurea said:
the magnetic field is increased and reduced in intensity
Therefore, Asymmetrical Electromagnetic Induction. Our Input Coil see's no net Negative force as we have a Magnetic Field Vector summation of Zero, Just as much Negative Force as Positive Force exists so they cancel each other out.
Best Wishes and Merry Christmas,
Chris
No one online at the moment
In physics, scalars are physical quantities that are unaffected by changes to a vector space basis. Scalars are often accompanied by units of measurement, as in "10 cm". Examples of scalar quantities are mass, distance, charge, volume, time, speed, and the magnitude of physical vectors in general.
You need to forget the Non-Sense that some spout with out knowing the actual Definition of the word Scalar! Some people talk absolute Bull Sh*t!
The pressure P in the formula P = pgh, pgh is a scalar that tells you the amount of this squashing force per unit area in a fluid.
A Scalar, having both direction and magnitude, can be anything! The Magnetic Field, a Charge moving, yet some Numb Nuts think it means Magic Science!
Hello my children. This is Yahweh, the one true Lord. You have found creation's secret. Now share it peacefully with the world.
Ref: Message from God written inside the Human Genome
God be in my head, and in my thinking.
God be in my eyes, and in my looking.
God be in my mouth, and in my speaking.
Oh, God be in my heart, and in my understanding.
We love and trust in our Lord, Jesus Christ of Nazareth!
More than anything else, your contributions to this forum are most important! We are trying to actively get all visitors involved, but we do only have a few main contributors, which are very much appreciated! If you would like to see more pages with more detailed experiments and answers, perhaps a contribution of another type maybe possible:
They REFUSE to tell me why!
The content I am sharing is not only unique, but is changing the world as we know it! Please Support Us!
Thank You So Much!
Chris
40
Ere many generations pass, our machinery will be driven by a power obtainable at any point of the universe. This idea is not novel. Men have been led to it long ago by instinct or reason. It has been expressed in many ways, and in many places, in the history of old and new. We find it in the delightful myth of Antheus, who drives power from the earth; we find it among the subtle speculations of one of your splendid mathematicians, and in many hints and statements of thinkers of the present time. Throughout space there is energy. Is this energy static or kinetic? If static, our hopes are in vain; if kinetic - and this we know it is for certain - then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature.
Experiments With Alternate Currents Of High Potential And High Frequency (February 1892).
