using sound to produce electricity???

[Nokia]

anu-ano po ang mga components needed for this thesis topic?  Doable po ba kaya itong topic na ito?
Our project is a cellphone battery charger then ang main source of energy nya is sound. Balak po kasi naming iaccumulate ung sound coming from a home generator (home gen will be placed inside a closed box para maipon ung sound)

Anu-ano po kaya ang mga transducer na pede naming gamitin?
Thanks in advance po sa mga magrereply[/b]

[toasted siopao]

Piston type microphone or speaker system.

Nakakita ka na ba nung made in china na flash light that you shake para mag charge ng batteries? Ganun kasimple yung principle ng gusto mo mangyari, you need a permanent magnet as a piston then a coil surrounding a cylinder, it is either you have a fix piston or a fixed cylinder, so kung alin yung movable yun yung nakaconnect sa diaphragm mo.

If there is a pressure sa diaphragm mo, then it will move inwards, so it will generate current, the tension sa perimeter ng diaphragm mo, will resist the said inward motion, so ang tendency, lalabas na ulit sya kapag wala na yung pressure sa diaphragm and will generate again current.

[Nokia]

^^ thanks po for quick response
pero hindi po kaya magiging kinetic to electrical energy ang kalalabasan nito? Kasi from the movement of piston manggagaling ung source?

[Nokia]

do you think possible po kaya ang topic na ito?

Balak kasi naming maglagay ng maraming piezo mics na naka series and parallel sa isa't isa then nakatutok sa home generator. para mag-aadd ung voltages and currents na maaacumulate ng bawat isang piezo mics.

And also, hindi po ba masama sa home generator kung ilalagay namin ung home generator sa loob ng kahon designed para ang lahat ng sound waves ay pumunta sa piezo mics namin? hindi po ba un magooverheat?

Need your opinion guys... I hope may response po ulit...
Thanks in advance

[rdpzycho]

posible naman 'to, though 'yung mga ginagamit ngayon, one piezo mic can power one sensor, or roughly few milliwatts. kumbaga hindi siya designed as primary source ng electricity, rather, having small things completely run on its own.

[piona]

yong source ng sound ay galing sa isang vibratrion ng isang material di ba? bat hindi nalang yong vibrating material ang e tapp nyo para makonvert to energy, para derekta. pagdadaan pa kasi sa air medium yong energy ng vibrating material mahina na ang makukuhang puwersa.

[Nokia]

that's our topic po kasi... converting sonic energy to electrical energy. Kung gagamitin namin ung vibrations coming from home genertors or other equipments magiging concern niya is kinetic energy (though sound also is a kinetic energy).

And also, alin po kaya ang mas effective na gamitin? Piezo mics or mics that uses coil and magnet to generate electricity?

[piona]

i think its better to used low wattage large cone speakers depending on the sonic energy that u have to convert to intercept the sonic vibrations not microphones.

[rdpzycho]

masasagot niyo lang 'yan through experiment. bring a millivolt meter and the microphones you have on hand sa mga lugar na medyo maingay. check niyo kung ano ang may pinaka-ok na generation.

but honestly, I think, kailangan niyo ng napakalaking array ng microphones just to produce 1 watt. even the most sensitive microphone, sa presence ng napakataas na SPL, milliwatts lang ang output, kaya kailangan pa rin ng amplifier.

[piona]

parang ganon nga yata ang dapat na  gagawin, you need large plate (sonic vibration interceptor) but with a sensitivity of a microphone to convert efficiently the sonic vibration (sound) to electrical energy.

[rodz06]

Mga Sir, gamit  nalang kayo ng ng permanent magnet just like the principle of the speaker... and at the same time,design din  kayo ng...sound generator.....all the principle of that projectwill be foun on the internet all you have to do just to study the basic principle of each design so that can build your own prototype.

[Nokia]

may way po ba para macompute ung current and voltage na maaaring maproduce ng piezo transducer? Paano po?

[Jejematz]

mga sir,, gmit lang kau nga charge pump... yung parang dc to dc convertion hanggang 5v... my ic ang maxim nyan