Is joule thief circuit gets overunity?

[poynt99]

I just completed some Input Power tests with board #33 using the voltmeter method and scope method for comparison, and it seems the voltmeter measurement gives a result consistently about 8% higher than the scope. I tested a range from about 6mW to about 35mW Input Power.

As channel averaging and record length is increased, the scope begins to approach the voltmeter readings, but never quite reaches it.

So for example, down in the 6mW range, the meters will compute to about 6.6mW and the scope about 6mW. At a range of 35mW, the meters will compute to 35mW, and the scope about 32mW.

[picowatt]

Lawrence,

I suggest the following:

1.  Perfom another board test using your scopes just as you normally do.  If your input scope continues to show the input current crossing above the zero line, save the capture and immediately do the following:

2.  Without changing ANY scope settings, disconnect the battery B+ connection and perform another capture.  If a trigger is required, select "line" or "free run" in trigger settings but make no other changes, particularly with regard to the vertical channel setings.  The reading you receive at this point should be zero volts DC or very close to it.  Any measured/displayed voltage would be DC offset.

3.  Again, without changing any scope settings, and while the battery B+ remains disconnected as in the previous step, clip a 100 ohm resistor between the battery B+ terminal and the end of the input CSR opposite the battery B- terminal.  If necessary, move the channel 1 probe which is measuring input voltage to the end of the 100 ohm resistor that is connected to B+ so that channel 1 continues to measure the battery voltage.  The voltage measured on channel two, the input CSR, should be equal to -Vbatt divided by 101 (that is, -14.8mv with 1.5V Vbatt).  This test allows a determination of any channel 2 gain error.

Perform these three tests and then post screen captures of your results.


PW



 

[ltseung888]

 Conversation with the Church Members whom I gave some Boards to.

Tseung: "There are some doubts on my DSO analysis.  The Input Current may never cross the 0 reference line.   The much more expensive Tektronics DSO does not show that crossing."

Member 1: "We have been following the overunity.com postings."

Member 2: "You have defined a procedure based on Instantaneous Power = Instantaneous Voltage x Instantaneous Current.  You have the circuit diagram and the analysis steps.  Are those still correct?"

Tseung: "Yes.  That equation can be applied to DC, AC or pulsed systems.  It cannot be wrong."

Member 3: "If the Atten cannot provide the accuracy at the 10mV level, you have nothing to be ashamed of.  The researchers in this field now know that the cheaper tool does not work.  They must have a high end DSO."

Member 1: "They can still rely on the Atten for comparison purposes.  For example, a  5-inch one- thousand turn toroid may generate much higher Output Power than the existing one.  Every tool has a limitation."

Member 2: "We can help you to find organizations or universities with high end DSOs in Hong Kong.  Just look at our weekly donation figures.  God helps those who help themselves."

Member 3: "You have done the right thing.  If you hide in the closet and never post anything or give us any boards, we never know how to help.  Now it is easy.  You need high end DSOs and experts who know how to use them."

God Bless.

[TinselKoala]

God may help those who help themselves... but You, Lawrence, have received a LOT of help, real help, from the people on this thread, notably PicoWatt, .99, and me. Who helps us?
I myself have actually spent a few dollars of my own money and quite a bit of time helping you to understand your own tools and measurements. Imagine your position had we here not pushed and prodded and pleaded and explained and reproduced and tested your claims here in this thread. You would be claiming your extraordinary results, based on uncompensated, uncalibrated, error-prone and inaccurate measurements, obtained incorrectly and analyzed incorrectly, and as soon as anyone competent who received your board hooked it up to a proper oscilloscope they would know your errors.
It's too bad that you already have all these boards out there in the wild.... every one with your name on it, every one with your claims attached to it, and every one of them NOT overunity in any way. Some of us urged caution and restraint, you may recall, but you in your enthusiasm wanted to sow your seeds. It is really a shame that your seeds are all rotten, not what they are claimed to be, and in the final end-- are an expensive waste of time.

[Rodelu]

It is really a shame that your seeds are all rotten, not what they are claimed to be, and in the final end-- are an expensive waste of time.

spot-on