How does Perendev's motor work?

[Liberty]

You don't get out more energy than you put in. As you say, you assist the magnets with a speaker driver, then ofcourse more magnets will increase the efficiency. A loudspeaker for home use have a typical efficiency of 1 - 5%, at most 30 - 40% of extremely high sensitivity speakers for PA use.
Anyway, magnets cannot provide energy, but they can provide greater kick and pull if assisted with electromagnets - like an electric motor utilize the magnets. If you quit the powersource, your engine will stop, so then where did the extra energy from the magnets go?

Many opinions regarding magnets. Regardless of that, they cannot do work without external energy manipulation - energy we all have to pay for.

Br.

Vidar

I was curious at what electrical efficiency a 12" speaker would run at. 
Thank you for that information. 

As far as the motor not running when power is turned off, that is correct.  The  motor in the video will come to a stop and is designed to do so.  The motor is designed to run with power input assist. 

However, the next design is designed to use the strength of magnets to replace the power input to run the motor.

You might find this interesting:  The dual rotor motor (using two 12" speakers) shown in the video was measured close to 70% electrical efficiency using the prony brake method on the output of the motor. 

Thanks for your reply.

[Low-Q]

I was curious at what electrical efficiency a 12" speaker would run at. 
Thank you for that information. 

As far as the motor not running when power is turned off, that is correct.  The  motor in the video will come to a stop and is designed to do so.  The motor is designed to run with power input assist. 

However, the next design is designed to use the strength of magnets to replace the power input to run the motor.

You might find this interesting:  The dual rotor motor (using two 12" speakers) shown in the video was measured close to 70% electrical efficiency using the prony brake method on the output of the motor. 

Thanks for your reply.

Do you have a link to your video? I have seen your video somewhere, but I cannot find it.

Regarding the loudspeaker efficiency it is ofcourse the acoustic efficiency I was talking about - sorry for the mistake. 112 dB/1m at 1 watt input is 100% efficiency. 109dB/1m at 1 watt in is 50%, 106db - 25%, 103dB - 12,5%, 100dB - 6,25%, 97dB - 3,125%, etc...

The mechanical efficiency is in practice greater than the acoustic efficiency. However, the acoustic output can in theory be greater than 100% as dB (desiBel is a relative term) is the reference and has no final 0-point, but the mechanical work cannot exceed 100%.

Br.

Vdar

[ChileanOne]

The very title of this thread is an oxymoron.

Perhaps Mike Brady was once a honest man seeking the good of mankind at some point of his life, but surely his frustration upon hiting the wall of "impossible" turned him into a sleak free energy scammer.

I do believe a PMM is possible, and Mike had one piece of the puzzle right, the problem is that the PMM was never meant to be built in a backyard, the underlying phenomena is darn tricky, but is there, and we will see it why. But not just yet.

[TinselKoala]

The picture of the Perendev unit from Perendev-Power (Mike Brady's site):



The picture of the real diesel genset (SDMO model TM11UCM) that he apparently ripped off and PhotoShopped to make the above picture:



I guess there are several possible explanations for this "coincidence". The one I prefer is that there are no authentic Perendev gensets available to be photographed. I wonder why not?

[Liberty]

Do you have a link to your video? I have seen your video somewhere, but I cannot find it.

Regarding the loudspeaker efficiency it is ofcourse the acoustic efficiency I was talking about - sorry for the mistake. 112 dB/1m at 1 watt input is 100% efficiency. 109dB/1m at 1 watt in is 50%, 106db - 25%, 103dB - 12,5%, 100dB - 6,25%, 97dB - 3,125%, etc...

The mechanical efficiency is in practice greater than the acoustic efficiency. However, the acoustic output can in theory be greater than 100% as dB (desiBel is a relative term) is the reference and has no final 0-point, but the mechanical work cannot exceed 100%.

Br.

Vdar

Sure, the movies can be seen from my web site (youtube based) http://www.dynamaticmotors.com or click the little 'world' under the Tesla picture on this site.  I can't remember what the db rating is, might be 89 or 102?  It's a 12" Sony speaker that was used for the actuator.