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Author Topic: Joule Thief 101  (Read 944389 times)

TinselKoala

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Re: Joule Thief 101
« Reply #2145 on: April 21, 2016, 05:48:12 AM »
With nice repetitive sine waves on your scope, how do you tell the difference between a 30 degree phase _lead_ and a 330 degree phase _lag_?


MileHigh

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Re: Joule Thief 101
« Reply #2146 on: April 21, 2016, 06:05:36 AM »
The buildings may be oscillating but how can
you prove they are in resonance? :o

How many resonant frequencies does a tall
building have?  With anti-resonance dampers?

A classic example of a lamely weak desperate attempt
to defend a losing stance. ;)

Must be a wedgie - those can be painful.  Did you not
deploy your chute? ???

Oh, stop your silly playing-the-bad-boy BS.  Losing stance my ass.  I have a reasonable sense of your technical knowledge level and you have been reading Brad spouting a bunch of nonsense and saying nothing.  Meanwhile you "take delight" in trying to be nit-picky with me or try to challenge me on something.  Most of the time I respond and then you say nothing.  The backdrop to that and your motivations for being a bad boy are that I have challenged you on chemtrails, vaccinations, and what would be better-left-unsaid politics.

Your Dr. Strangelove cameo moment came up and such is my response this time.

SeaMonkey

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Re: Joule Thief 101
« Reply #2147 on: April 21, 2016, 06:06:54 AM »
Quote from: TinKoa

With nice repetitive sine waves on your scope, how do you tell the difference between a 30 degree phase _lead_ and a 330 degree phase _lag_?

Ooooh!  I love those kinds of questions! 8)

There is of course an answer which is more correct
than all of them... ::)

Way to go TinK! ;)

tinman

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Re: Joule Thief 101
« Reply #2148 on: April 21, 2016, 06:33:00 AM »
With nice repetitive sine waves on your scope, how do you tell the difference between a 30 degree phase _lead_ and a 330 degree phase _lag_?


Good question
How?


Brad

tinman

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Re: Joule Thief 101
« Reply #2149 on: April 21, 2016, 06:40:21 AM »
Oh, stop your silly playing-the-bad-boy BS.  Losing stance my ass.  I have a reasonable sense of your technical knowledge level and you have been reading Brad spouting a bunch of nonsense and saying nothing.  Meanwhile you "take delight" in trying to be nit-picky with me or try to challenge me on something.  Most of the time I respond and then you say nothing.  The backdrop to that and your motivations for being a bad boy are that I have challenged you on chemtrails, vaccinations, and what would be better-left-unsaid politics.

Your Dr. Strangelove cameo moment came up and such is my response this time.

Well MH,it's been a hoot.
The one thing i will say is,thank you for all of your help over the years-you have taught me much.
I guess there comes a time when we  have to agree to disagree.
There is no point in continuing  to argue about resonance,as it makes more sence to put what we know (believe) to work,and see if we can make something of it.

Brad

picowatt

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Re: Joule Thief 101
« Reply #2150 on: April 21, 2016, 09:30:05 AM »
It was good to see you show up so fast,and comment/correct  MHs mistakes PW. ;)
A clear pattern has formed here in this thread.


Brad

What does MH's "wow" moments have to do with yours?

The emotional feud between you and MH is your own matter...

PW

picowatt

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Re: Joule Thief 101
« Reply #2151 on: April 21, 2016, 09:43:17 AM »
Quote from: TinselKoala
With nice repetitive sine waves on your scope, how do you tell the difference between a 30 degree phase _lead_ and a 330 degree phase _lag_?

Good question
How?

Brad

If necessary, by inserting a marker pulse, half sine, burst, etc using the second channel of your FG (as I suggested back in the flywheel version of these "experiments" and again just recently).

However, your open secondary waveforms made a lot more sense after you flipped the secondary connections...

PW

tinman

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Re: Joule Thief 101
« Reply #2152 on: April 21, 2016, 11:32:28 AM »
What does MH's "wow" moments have to do with yours?

The emotional feud between you and MH is your own matter...

PW

Well i was refering as to how you never correct MH(or the likes) when they are wrong,and yet you show up in a flash to point out my mistakes-
-just saying. ;)


Brad

tinman

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Re: Joule Thief 101
« Reply #2153 on: April 21, 2016, 11:37:15 AM »
With nice repetitive sine waves on your scope, how do you tell the difference between a 30 degree phase _lead_ and a 330 degree phase _lag_?

So thinking a little more on that question TK.
If we look at my last video,i shift the secondaries current wave !!through!! the primaries current wave.
So would this not mean that it went from trailing to leading if it passed straight through the primaries trace?.


Brad.

picowatt

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Re: Joule Thief 101
« Reply #2154 on: April 21, 2016, 11:41:42 AM »
So thinking a little more on that question TK.
If we look at my last video,i shift the secondaries current wave !!through!! the primaries current wave.
So would this not mean that it went from trailing to leading if it passed straight through the primaries trace?.


Brad.

You might consider repeating that video with the secondary connections flipped...

tinman

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Re: Joule Thief 101
« Reply #2155 on: April 21, 2016, 12:46:10 PM »
You might consider repeating that video with the secondary connections flipped...

Will do.


Brad

MileHigh

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Re: Joule Thief 101
« Reply #2156 on: April 21, 2016, 08:17:28 PM »
Well MH,it's been a hoot.
The one thing i will say is,thank you for all of your help over the years-you have taught me much.
I guess there comes a time when we  have to agree to disagree.
There is no point in continuing  to argue about resonance,as it makes more sence to put what we know (believe) to work,and see if we can make something of it.

Brad

Well I wish I could say, "It's been real," but I can't.  It's been absolutely unreal.  So unreal that at the end of this discussion you come up with a crazy half-definition of "resonance" where only an externally driven resonant system is "resonance" but a resonant system resonating stand-alone all by itself is "not resonance."

It's so unreal that you are doing a simple college physics experiment and yet you try to claim it is "not in your books."  There were probably about a dozen arguments with you in this thread where you were absolutely unreal.

It looks to me like you are going to be spinning in circles for a long time.

MileHigh

verpies

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Re: Joule Thief 101
« Reply #2157 on: April 22, 2016, 12:11:51 AM »
How does the air drain away the energy without changing the frequency,
Air changes the frequency a little. In other words, in vacuum the string would vibrate a little faster...and much longer.

This also happens in LCR circuits, where the resistance slightly affects the self oscillation frequency in an underdamped transient response.  AFAIR it affects the Alpha parameter and the Neper frequency.

tinman

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Re: Joule Thief 101
« Reply #2158 on: April 22, 2016, 01:07:05 AM »
Well I wish I could say, "It's been real," but I can't.  It's been absolutely unreal.  So unreal that at the end of this discussion you come up with a crazy half-definition of "resonance" where only an externally driven resonant system is "resonance" but a resonant system resonating stand-alone all by itself is "not resonance."

It's so unreal that you are doing a simple college physics experiment and yet you try to claim it is "not in your books."  There were probably about a dozen arguments with you in this thread where you were absolutely unreal.

It looks to me like you are going to be spinning in circles for a long time.

MileHigh

All i can say is,i have applied what i know to this thread.
As you know,ICE's are my life--even though the ICE is a very bad and inefficient design for an engine/prime mover.

I found Walter Lewin's video's to be very educational and spot on.
In the one below,he shows the difference between a harmonic oscillator and resonance-->you will have to watch the video before this one in regards to harmonic oscillators,and harmonic oscillation.

At the end of the day,we can only do our best to associate what we know from what we have learned by those that have high standing in the subject matter.

https://www.youtube.com/watch?v=1K5p9DfsXGo&list=FLsLiBC2cL5GsZGLcj2rm-4w&index=1


Brad

poynt99

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Re: Joule Thief 101
« Reply #2159 on: April 22, 2016, 02:40:33 AM »
I found Walter Lewin's video's to be very educational and spot on.
Spot on with reference to?

btw, Lewin is good, but he gives at least one lecture where he unfortunately leads his students astray.