Akula0083 30 Watt Self Running Generator.

[wattsup]

The AC-coupling capacitor is probably the physically largest one in the front-end. It will be a good poly-film type of 300 V or more. Do you have the Service Manual for the scope, or a link to a digital version?

Now, I'll try again: I am asking questions for a reason. If you actually answer the questions I and other people actually ask, we might get somewhere.
1. Again: was the channel2, the one with the problem, set to AC coupled, or DC coupled?
2. What happens when you hook the Channel A2 probe to the sig gen, through a 0.1 uF coupling capacitor? Probe tip to cap, cap to FG.

@TK

Thank for your kind patience. ChB is the problem because my other scope coincides with the channel A readout, so I know it's ChB and regardless of A or B or both being AC/DC, DC/CA, AC/AC or DC/DC the problem does not change, the only difference between AC and DC is that in AC, the waveform moves up to their respective zero X axis points on the screen, but the signal strength shows the same divergence when they should be identical.

I am showing you two images of the CHb on the calibrate pin and ground. The am also showing the vpp, vrms and the freq. In the second shot with the 0.1M cap (100n) I had to bring up the zero point by 2 divisions to have the waveform in the screen from where it was for the first shot but both are generally showing the same thing, no difference.

I also put up a shot of the CHA and CHB entry point on the scopes circuit board. The ChB is the left (center of photo) and ChA is the right (top of photo). I have not seen any apparent damage to the components on either side and there is no big capacitor there to consider.

I have not found the schematic for this scope yet but will keep looking. It is a HP-54645D. The problem occurs when I go above 5KHz the waveform B is about 1/10th that of ChA.

Thank again for your looking into this. Got to leave for work so I'll check in from there later on.

wattsup

[starcruiser]

looking at the PCB pix, it seems that they are using relays to switch the input, the yellow blocks (one is labeled K5) can you trace the input path on the PCB? This will tell you which components are in path. It is possible that the relay might have some contact issues (carbon) which would impact your readings. I would also look at the trimmer cap to the left as well. Finding a schematic would be a huge help in fixing the scopes input.

BTW the sq wave signal you are showing has a little tilt, still showing roll off, the top pix. the next one seems to look better but you can adjust it to the graticule line to check that.

edit: just found this, perhaps can assist?

http://www.manualslib.com/manual/529230/Agilent-54645a.html

[JohnnBlade]

Hi All,

I added some more details to the circuit from Akula0083, hopefully some of yall can fill in the blanks.
And check for improvement.

I will still be trying to add more info, but this is what i got now, cause many other circuit did not add up.

The components values i will add after some more reverse enginering, if you know the values then you can add that to the picture, and like that we can complete it together and test the circuit.

Values with an x infront means i wasnt sure how the mosfet driver was connected or how that part was properly connected, but i think i got most of it.

I am missing 2 diodes at the bottom mosfet driver, and a resistor next to C3

Hope it makes some sence to yall : )

Here is a draft on youtube
http://youtu.be/7yJytHhudX8

Greets JB

[EMJunkie]

Off topic guys! Throw that over in the Scope Repair thread please.


@All,

I can confirm some unusual effects from using a Phase Shifted Pulsed DC into the two coils on the Input. My Post below shows How I have done it thus far.

@All,

I have found a way to produce the signals we need. Its quite cost efficient, doesn't require lot of time and is easy. Its very flexible and should be very easy to implement.

What's in your Tool Kit?
Most of us have been using Microcontrollers, some have been using them for sometime!

If your Tool Kit does not Include a Microcontroller them I highly recommend you start looking at it.

Microcontrollers - FEZ Hydra
I have programed a FEZ Hydra to produce the signals we need! Initially I did not think it would be possible due to CPU PWM Frequency Limitations. I am having stray inductance issues at high frequency but its not too bad considering.

Its early days in this endeavour and lots of improvements can be made. The point is that the signals are there, they are good for High Frequency with a little tiding up we could make big improvements.

If enough are keen then I can move forward and show others how to do it.

Advisory
I don't recommend anyone rush out and purchase a FEZ Hydra at this point in time! Its early and this path of investigation may not result in what we are after. For those that don't have a FEZ Hydra already that is! If you have a FEZ Hydra sitting around and have not used for a while then let me know and we can start some very simple experiments.

NOTE: If you're new to the FEZ Hydra, it can be a little problematic and in the past has had a ton of issues. Most issues are now fixed which is good!

All the Best

  Chris

The output coil Pulses with the Standing wave that is created. Its also in and around the same range or frequencies that I have confirmed on the video, Akula was around 7KHX and mine is at about 5 KHz at the moment.

I can see a definite standing wave created on the scope and its apparent in the Load as a Pulsing flash on the Light. Its not overunity yet but there is something there.

All the Best

  Chris

[EMJunkie]

Hi Everyone,

I found today what I believe to be possibly the most important piece of information I have ever seen Akula write down:

The difficulty is to wind the coil so that the inverter current induction field generated will not interfere with transistors or thyristors forming a 220 volt 50 hertz. here invent what you want want want shakes bifilar stavte intermediate trans.

The Full Text:
цитата автора:akula0083: "собирайте простой преобразователь 12-220, 24-220, 36-220..... ну кому как удобно или у кого какие радио детали есть.
трансформатор поместите вовнутрь поля создаваемое индуктором от простой индукционной схемы. для весомого результата поле должно иметь силу которое может нагревать металлический предмет равный по размерам трансформатору преобразователя !То есть это наблюдение из собственного опыта берем кусок железа примерно того же размера как наш трансформатор на котором собран преобразователь и помещаем его в индуктор включаем индукционную так сказать печку и если металл нагреваеться достаточно быстро ну где-то за 120 секунд его уже становиться сложно держать в руках все будит работать
Сложность в том чтобы намотать обмотки преобразователя так чтобы ток создаваемый индукционным полем не мешал работе транзисторов или тиристоров формирующих 220 вольт 50 герц. вот тут придумывайте как хотите хотите мотайте бифиляры хотите ставте промежуточный транс.
Видео от сюда автор: akula0083: https://plus.google.com/u/0/103786798...
видео от сюда http://video.yandex.ru/users/akula0083/
копии видео от сюда: http://www.youtube.com/watch?feature=...
копии видео от сюда: http://www.youtube.com/watch?v=7C4yEA...
канал с копиями видео:http://www.youtube.com/user/131313den...
skype akula0083

ФОРУМ ОБСУЖДЕНИЯ УСТРОЙСТВА: http://realstrannik.ru/forum/39-kapan...

I am going to say that this does in fact relate to the work of Paul Raymond Jensen. Anyone following this? I believe once who ever is following does in fact put this together, we will have a winning combination.

All the Best

  Chris