The assignee for this patent, patent number 8643223, is Agostinelli; Paolo (
Reporters obtained the following quote from the background information supplied by the inventors: "It is known that one of the main problems of those electronic equipment that have to provide for the amplification of signals of small amplitude is caused by the background noise that limits the minimum signal that is possible to amplify.
"The noise may be reduced by means of an accurate design and, even more, by paying attention to the energy source, i.e. to the power supply circuit.
"Usually, all power supplies obtained by the mains voltage generate noise and interference, which limit the resolution of the electronic amplification equipment.
"This phenomenon can be immediately noticed in audio equipment and it's the reason why sophisticated filtering circuits are used to reduce the noise due to the power supply.
"Another solution for reducing said noise consists of the use of batteries or accumulators, that brings good results but has evident drawbacks. All interference due to the mains are eliminated; as since there are no rectification circuits, together with the mains injected noise also the band switching noise of the rectification diodes is eliminated.
"From the tests performed on the use of the above power supply, a phenomenon appears though, that might be linked to the electrochemical reaction time or to the used materials, and said phenomenon is clearly audible in the audio field: small signals relative to the high frequency harmonics, are not reproduced with the correct phase or are even cut off; in terms of quality of listening, the ambience gets lost, this phenomenon is audible in the reproduction as well as in the recording phase, and affects the ambience which is one of the most important parameters in the sound reproduction.
"In alternative, it is possible to turn to generators like dynamos or alternators for obtaining an energy source that is not connected to the mains and it's not of electrochemical nature, but said generators comprise moving parts, are noisy and require a constant control of their operation."
In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventor's summary information for this patent: "It is an aim of the present invention to solve the above mentioned problems by means of an innovating solution that employs a current source of a considerable duration, that does not have moving parts and that does not require any control.
"The device according to the present invention, includes a structure realized with one or more solar cells, connected in series or in parallel in order to obtain the required voltage and current level, and comprising a light source realized with LED (Light Emitting Diodes) arrays or lamps supplied by the mains or by other electric sources, directly or through a stabilization circuit. The device according to the present invention can obviously work also with natural light.
"The results obtained in the electronic equipment provided with this kind of power supply have proved to be of higher quality than any kind of conventional power supply system.
"The smaller signals can be reproduced without any kind of phase-displacement, with the correct amplitude, and with a definitively higher resolution.
"In audio reproducing equipment, all the above advantages brings along an exceptional ambience reproduction, absolutely close to the one of the source sound, thus obtaining in a simple way results never obtained before by any known equipment.
"Tests have been performed with sound recording systems and a considerable improvement has been obtained by means of the power supply device according to the present invention, when compared with the same equipment supplied by other systems.
"The present invention will be explained more in detail hereinbelow relating to the enclosed drawing in which a preferred embodiment is shown."
For more information, see this patent: Agostinelli, Paolo. Feeding Device with Solar Cells, Working with Artificial Light Sources, for Electronic Equipments. U.S. Patent Number 8643223, filed
Keywords for this news article include: Patents, Chemistry, Electrochemical.
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