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Overunity Machines Forum



Where the OVERUNITY using INDUCTION COILS comes from (eg Joule Thief)

Started by pfrattali, May 22, 2017, 07:26:40 PM

Previous topic - Next topic

0 Members and 5 Guests are viewing this topic.

antijon

QuoteThe more CEMF/BEMF an electric motor produces,the more efficient it is.

This isn't exactly true Brad. High cemf limits the power of the motor. An easy way to see that is by comparing an open load motor to a full load motor.
Open load= lowest power= highest efficiency
Full load= highest power= lowest efficiency
There's no point in discussing the open load motor because it's not producing any power. An open load motor is like an open transformer, it's only using enough power to maintain its magnetic field.

I understand your line of thinking, but instead of decreasing power transferred to increase efficiency, why not use 100% power in and get more out.

tinman

 author=webby1 link=topic=17297.msg508288#msg508288 date=1500125887]
https://en.wikipedia.org/wiki/Electrostatic_motor



QuoteAs far as most of the rest of your response,, I might suggest that you actually read what you wrote,, several times,, while thinking them over.

My response is correct.

QuoteDid I say zero volts by the way?? didn't think so,,

Quote: If the used potential is only voltage then it is an electrostatic motor, if it comes from amps then it is a "conventional" motor.

So,you quoted voltage only for an electrostatic motor,and amps for a conventional motor.

Your next comment was-Quote: How much torque does 10A make?

Some one dose need to re-read there statements several time's,but it is not me.

QuoteJust as a starting point,, you can find many companies that make these non static static motors,,, it is after all only a label.

It is also not as you stated,where you said electrostatic motors use only voltage.

Quotebut it does not take very much thought to think that if the input voltage did not need to rise with RPM then the motor would spin up to an infinite RPM at the same torque,, not that you have covered that with your response which is what I asked about.

You asked a question-Quote:Why do we need to keep increasing the voltage to maintain 10A as the RPM goes up?
And i answered that question correctly.

QuoteAn efficient motor is one that can make the most mechanical work out for the same electrical in,,,

This we know


Brad

tinman

Quote from: antijon on July 15, 2017, 10:51:28 AM
This isn't exactly true Brad.  An easy way to see that is by comparing an open load motor to a full load motor.
Open load= lowest power= highest efficiency
Full load= highest power= lowest efficiency
There's no point in discussing the open load motor because it's not producing any power. An open load motor is like an open transformer, it's only using enough power to maintain its magnetic field.

I understand your line of thinking, but instead of decreasing power transferred to increase efficiency, why not use 100% power in and get more out.

antijon

Do you know why the power consumption increases when the motor has a mechanical load placed on it?

QuoteHigh cemf limits the power of the motor.

No it dose not.
The higher the CEMF,the more efficient the motor is.
Answer the question above,and you will then see why.


Brad

citfta

Quote from: webby1 on July 13, 2017, 05:20:45 PM

How much torque does 10A make?

That question really doesn't make any sense.  It's like asking how much pressure does a gallon of water have?

Quote from: webby1 on July 13, 2017, 05:20:45 PM
Why do we need to keep increasing the voltage to maintain 10A as the RPM goes up?  <== meaning that there is now a constant torque being made at whatever RPM.

You don't normally increase voltage.  You set the voltage and when the motor reaches the speed it needs to create enough CEMF to balance the load and applied voltage then the motor settles at that speed.  Torque is not constant at a given speed.  Torque is constant at a given speed and given current.   A motor at 1800 rpm may be developing very little torque if it is not loaded.  If it is loaded then the current will go up to match the torque to the load and to keep the motor at a speed that will balance the CEMF to the applied voltage and load.


Quote from: webby1 on July 13, 2017, 05:20:45 PM
What if that was from say 10V @ 10A being supplied, what happens when the RPS * torque exceeds 100J?

There is induction in said motor as well as self induction in said motor,, what do you think needs to be controlled and what impact could that have on the mechanical work done by a motor with these things under control.

I don't understand what you mean by either of these statements.  What does RPS mean?  And in the second statement there is nothing that needs to be controlled.  The balance between load and current and voltage is all done in the design of the motor and is self-regulating.  I am of course talking about a normal household type induction motor.  When you get into industry then there are all kinds of motors with all kinds of control circuits for doing many different things such as constant precise speed control or constant torque control and many other applications.

lancaIV