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Old 07-07-2015, 01:09 AM
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Quote:
Originally Posted by Gerard_Morin View Post
The other video is up.

https://youtu.be/YZ7I9XgaW3A
Hello Gerard. Some RC motor controllers send different audio tone sequences to the motor as status indicators. If you read the manual for the RC motor controller you have, it should indicate what the different audio tones/melodies indicate. This appears to be working on a principle similar to how speakers work. If you send audio frequency signals to speakers, which like motors have coils of wire and magnets, the speaker cone coil vibrates at the audio frequency tones being sent to the speaker. The RC controller must be programmed to send audio frequency tones to the motor windings which causes something in the motor such as the rotor or whatever to vibrate at the audio frequency tone being sent to the motor windings, and you can hear the audio tones.

'Radio Frequency' is just an indication of a range of frequencies which are often used in radio transmissions of one sort or another. It has nothing to do with the specific type of waveform, but just defines a range of frequencies. It depends on the exact definition from differrent sources, but it is by some sources defined as being the range of frequencies from 3 kHz to 300 GHz, although some definitions of RF extend the range down to even lower frequencies. 3 kHz is also in the range of audio frequencies. These are just definitions of frequency ranges and don't restrict or indicate the exact type of waveforms involved. AC means alternating current, which is self explanatory, and DC is direct current which means current flow is in only one direction, whether it is steady or pulsating. Both AC waveforms and pulsating DC waveforms can be of almost any frequency. Your use of 'RF' as something completely different than 'AC' makes no sense at all. These terms are describing two different things, as I have explained, but they are definitely not mutually exclusive. You can have AC waveforms in the RF frequency range, or they can be outside of the RF frequency range.

According to Tesla himself, Tesla's magnifying transmitter was meant to send power through the ground, so it was by definition a transmitter, although an exact same arrangement might possibly also be used as a receiver of the energy being transmitted through the ground from a magnifying transmitter.

If you placce two motors side by side, there will be some induction from the powered motor windings to the motor windings on the unpowered motor. The induced voltage will typically be of the same waveform type and frequency in the case of sinewaves. That is just showing the very basic concept of induction between coil windings that are fairly close together. The induced voltage waveform you are measuring on the second unpowered motor will have very little power associated with it however, due to the arrangement of the motor windings on two separate cores. You can also measure induced 60 Hz mains waveforms on wires and pieces of metal objects using a multimeter or a scope probe. All of these induced voltages will have only small power associated with them however due to the poor inductive coupling. Physicists will not call that a 'phantom current'. They will call it an induced voltage, because that is what it is.

Motors and transformers contain much of the magnetic field in the cores, but the magnetic field is not fully contained in the cores. There is always some degree of a magnetic field around motors and transformers, so you can pick up that magnetic field from nearby meters or other magnetic detection devices. That is nothing unusual.

Gerard, it is obvious that you have little understanding of basic electronics concepts. Rather than trying to explain things by mangling and misunderstanding all sorts of basic electronics concepts and terms, IMO you would be much better off to just build something that you believe is doing something unusual and ask for help from qualified people to show you how to do some proper measurements. If you really have anything unusual going on then you should have no objections to doing some proper measurements to confirm how it is really working.

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Last edited by level; 07-07-2015 at 02:31 AM.
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