From the original SynthMaker forum (2004–2014), with its members’ names and dates.
MegaHurtz ·
Hello, ive been wondering about this schematic. Struggling to find out the added value.
Now.. The trick would be to use inverted capacitance added to a buffer to simulate magnetic field properties making it sound like an actual inductor.. The thing i cant see is why there would be added benefit to this setup, since the output would be commutative in my opinion. So to rephrase does the rest only put a higher current through, or does the feedback line actually carry a signal?
trogluddite ·
The circuit is an inductance gyrator. The main reason for using it is to save cost and space - real inductors can be very large and very expensive components, and are typically only available in values up to a couple of hundred mH. The gyrator circuit uses cheap, small components, so for many circuits it is much more cost effective - but there are limits to the kind of circuit it can be used for. The Wikipedia article HERE has some good info and links.
MegaHurtz ·
My head is getting a bit loopy when im trying to apply logic to this cirquit. But if i assume correctly theres noting going on other than V=(V/R)-(dC*R)? where dC is the differential reactive nature of the capacitor. hmm.. Having a hard time getting my digital implementation to ring naturally. Thought mimicking an inductor would somehow equate to these ringing effects. KVL headaches all day 🙁 But thanks!
trogluddite ·
You will still need a capacitor as well as an inductor to get any oscillation going on - in a real inductor self-resonance is due to 'imperfections' - adjacent windings of the coil act like the plates of a capacitor, giving a capacitance in parallel with the inductance - thus forming a tuned cicruit.
MegaHurtz ·
Yes given we would not take the magnetic field into account. Cheating KVL for a bit, causing a sharp Q factor when over overlapped, wich digital implementations do not share as an effect. So i need to find a nice way to simulate this, basically for a bandpass it`s sort of feedbacking its lowpass remainder into the product, but I was kinda wondering how to solve it in a way that defeats all purpose ( the modular way). By having a fixed L component next to my C component.
Else we would yust have a better phase version of this, (0 degree liniar that is 😈 .. but oh wait thats a dolby pattent)
So actually hoping my first cirquit equation was horribly wrong!
Jay ·
Some sites i have found useful in learning about resonant circuits! I use them for harvesting radio waves and converting them back to usable electricity/cold energy! amongst other uses.
http://www.tina.com/English/tina/course ... sonant.htm
http://www.ndt-ed.org/EducationResource ... rcuits.htm
http://en.wikipedia.org/wiki/LC_circuit
http://hyperphysics.phy-astr.gsu.edu/hb ... erres.html
regards!
MegaHurtz ·
Thanks man! Ill start digging in right now 🙂
MegaHurtz ·
Jay wrote: Some sites i have found useful in learning about resonant circuits! I use them for harvesting radio waves and converting them back to usable electricity/cold energy! amongst other uses.
Aah so youre stealing my radio.. Wouldnt cristal be better for this?, would assume it has a better jield?
TomC ·
Jay wrote: Some sites i have found useful in learning about resonant circuits! I use them for harvesting radio waves and converting them back to usable electricity/cold energy! amongst other uses.
May I point out that harvesting electromagnetic fields is against the law in some countries, so better check your country's laws about this before you write something in public.
Tom
Jay ·
Yes MegaHurtz some ppl have bean playing with crystals for this also but they are not trying to pick up radio station signals but the ones bombarding us from space (background radiation,static or whatever it is) and most are making custom crystals but I haven't delved into this myself yet! also Dr Ronald Stiffler has some exiting work on the go atm with his self resonant circuits.
This is also very interesting http://en.wikipedia.org/wiki/Sonoluminescence
http://www.youtube.com/watch?v=LWO93G-zLZ0 Sound energy to heat and light energy!
Cheers Tom! Not to sure about that in the UK! but the idea isn't to steal signal from anyone but take the free stuff from nature to power resonant circuits which pulse tuned coils and the energy is really harvested from from the magnetic collapse within the coils, Just like in any generator/motor!
And anyway if we all live in fear to talk openly about energy or experiment in energy then we only allow ourselves to continue to be enslaved to the power companies.We can not trust the monetarily blinded science community nor the greedy corporations to aid mankind into the next energy era!They can't even tell the truth about the current one.
Sorry to digress MegaHurtz 😊
Best Regards
MegaHurtz ·
Its alright, I think its about time we ran water and other forms of sustainable energy. About the sololuminesence in my experience a certain type of goosebumps (the jaw clenching kind) comes with a luminous sensation, maybe theres something very interesting there "for real". could well be little vortices?
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