Jagau
posted this
15 February 2023
- Last Edited 15 February 2023
Hi Atti
These are very good questions you ask, according to my first try and what I observed following the recommendations of the inventor friendly called the DOC;
About your questions;
-Is it necessary to loosely couple the inductors?
The 3 coils must, for better performance, be at 90 degrees relative to each other in a 3 dimmension plane, thereby canceling the mutual inductance between each of the coils
-What happens if the connection is tight?
The connections between the components must be as short as possible given our extended frequency up to 500 Mhz
-Can the resonance points come from an external factor? For example, is the "primary" vibration circuit separate and the "secondary" vibration circuit separate?
L1-c1 establishes the frequency of use and I admit that my experiments at this stage are primitive but given that what I understand for the moment the coherence (Wiki makes a good definition of it) and the fact that this circuit operates in very high impedance any nearby object or mass, even our hand, disturbs its behavior.
https://en.wikipedia.org/wiki/Coherence_(physics)
The coherence resonance is established between L2-L3 and the internal capacitance of the circuit, in addition to the Self resonance of the coils and when the BJT enters the negative region, a pumping effect of the energy of the environment occurs. Negative region is between Vpeak and Vvalley
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But as you can see, this type of experience is the one I've been looking for for a long time because I firmly believe that the energy around us is available.
I hope that answers your questions if there is anything else let me know.
Jagau