Accurate Measurements on pulsed system's harder than you think.

[tinman]

Just popping this one in here.

Magnets increasing the efficiency of a pulsed system.
Can you argue with this one?.

https://www.youtube.com/watch?v=tVNABy8fSlI


Brad

[digitalindustry]

I'll probably make a video later this evening. I've been up all night and need to get some sleep now.

The duty cycle (pulse width) and frequency in my No-Bedini-Atoll circuit are set by the Function Generator driving the Gate of the mosfet. In TinMan's original Bedini SSG circuit the frequency and duty cycle are determined by the speed of the rotor and the spacing of the coil-rotor combo and the Base resistance and the characteristics of the switching transistor.

In the first few discussions the "mean" or "average" values of the current were being compared between the Cap and NoCap conditions. (My scope calls it "average" and TinMan's scope calls it "mean" but they both refer to the same thing, and "mean" is actually the more correct term.) Since the Mean current was lower when the bulb was brighter, this seemed strange, but when the Power dissipated in the bulb is actually computed, either by hand using the _correct_ input values (not the averages) or directly by the scope's Math function, the mystery is resolved and it can be seen that the lesser average (or mean) dissipated Power does produce the dimmer bulb.

Now the question becomes how does this happen electrically in the circuit? Why does connecting the capacitor produce less power dissipated by the bulb, and why does this effect depend sensitively on the resistance between the bulb and the switching element?

ah thank you, yes ive learned here also, as you posted the shots v is optional, but thanks for taking the time originally.

my guess to the last q would be a guess at this stage in saying it is in the nature of the waveform posted when the cap is connected the smoothed pulse and how the filament reacts.

Tm has highlighted a curious effect.

[digitalindustry]

Just popping this one in here.

Magnets increasing the efficiency of a pulsed system.
Can you argue with this one?.

https://www.youtube.com/watch?v=tVNABy8fSlI


Brad

i agree with this totally, because it is my belief that 'magnets' impart energy.

because 'magnetic' is just 'gravity at frequency'  which can then be resolved into fields.

so you can say everything is magnetic or nothing is magnetic and everything is gravity.

the effect is always seen when there is inerta through a field i.e your mag passing the coil.

(or any variant thereof) sys at resonance are no different  its just the inertia gets naturally multiplied.

this is why combinations of inductors (electro mag) and perm mags will always work as long as inertia is present (resonate shake, collapse or EMF or all)

[verpies]

Here is the pulse motor circuit from video 1 and 2,showing scope probe placement as well.

Why for the input power measurement to the entire circuit, the scope probes are not placed like this?:

[woopy]

Hi TK

Thank's for your input

In your sentences hereunder, can you please elaborate some more why we have  to multiply first and average after ? Are the average voltage and current not correct on the scope?

"I think that what was causing the confusion in the first place was the use of the wrong "average" or "mean" values for the power computation. The average needs to be taken after the multiplication, rather than taking the averages first and then multiplying them."

Thank's

Laurent