Joule Thief 101

[MileHigh]

There you go Brad.  I made it very clear to you that posting the proper rotor/magnet/timing diagram was not for me at all.  Yet you played the "spoon feeding" card against me which is nothing more than a distraction to try to take attention away from your poor presentation and communication skills.

The proper diagram is for someone like Shylo, because he would be easily confused by your two incorrect diagrams.  I uploaded the correct diagram and now you can explain it to him.

[tinman]

Tinman ,You say "As we approach the coil of wire with the PM(PM field rising in the coil of wire),the EMF across that coil will increase in one polarity. As the PM reaches the middle of the coil,there is no longer an increase in magnetic field strength(magnetic field no longer changing in time),and at this point,the EMF across the coil will be 0volts. As the PM leaves that coil,an EMF of the opposite polarity will form across that coil,as the magnetic field is once again changing in time.--->"

The field is in constant motion, so how can there be no changing in time? I agree with everything else you said but, I think the part about zero EMF , the cross-over of the rule about current direction in a conductor, depending on magnetic polarity, Is instantaneous, It doesn't so much go to zero ,it just flips polarity, and works in the opposite, If max + is 12V ,It switches to max -12v and as the magnets leaves the -12v goes back up to zero.

At the very point in change of polarity for the EMF,is the very point in time the magnetic flux has reached it's maximum value,and the very point in time the magnetic field is not changing in time.
At theses very points in time,the EMF(voltage) value will be 0,as no matter how short the time period,there must come a point of a 0 EMF(volt) value during that change in polarity.
When we use the speed of light as a reference,this 0 EMF value can be quite long in that frame of reference--like with low speed generators.

As a magnet approaches the coil,you will get a rise in EMF,and this EMF across that coil will peak before the magnet reaches the center of the coils core. When the magnet is directly at the center of the core(as in my previous diagram-below) the EMF across the coil will be 0,as the magnetic flux through the core is at it's maximum. As the magnet leaves the core,an EMF will once again start to develop across the coil,but with the opposite polarity. The maximum amplitude of this EMF will be produce some degree's after TDC,not at TDC,as at TDC the EMF is 0.


Brad

[tinman]

There you go Brad.  I made it very clear to you that posting the proper rotor/magnet/timing diagram was not for me at all.  Yet you played the "spoon feeding" card against me which is nothing more than a distraction to try to take attention away from your poor presentation and communication skills.

The proper diagram is for someone like Shylo, because he would be easily confused by your two incorrect diagrams.  I uploaded the correct diagram and now you can explain it to him.

unfortunately for you MH,that diagram you modified to show the wave form is incorrect.

You really do not know that much about induction--do you.


Brad

[MileHigh]

unfortunately for you MH,that diagram you modified to show the wave form is incorrect.

You really do not know that much about induction--do you.

Brad

You've gone full bonkers and you are still wanking away.

[SeaMonkey]

The past several pages have been quite revealing
psychologically as the "struggle for dominance" has
become increasingly transparent.  It seems that Miles
has acquired a small following of "groupies" to augment
his efforts.  This is not too surprising as Miles is an
accomplished wordsmith with considerable persuasive
skill.

The "opposition" though is holding up well and making
a good accounting of its prowess as the struggle evolves.

It looks as though the tailspin leading to the crash of the
weaker arguments is taking shape.  Will there be a recovery?

Carry on gentlemen - this may be a new record for length of
discourse.  And, it is entertaining too!