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I am designing a mobile battery pack that would charge continuously when rf signal is present...
Which battery would suit best? Li-Ion, Ni-Mh, Ni-Cd
Price and Functionality... tnx ^^
Is it hard to charge a Lithium Ion battery? which is more convenient/efficient?
Is it true in charging Ni-Mh...
Hmm let's say lithium-ion? or lithium polymer? it's intended to store energy for later use... the device is a battery pack which will then be used to charge cellphones etc
Guys could you orient me about smart chargers?
I'm planning to make a charging circuit itself for batteries but i don't know how to prevent it from over charging?
Could oyu guys pls help me tnx schematic diagram would be much appreciated ^^
by the way its for electronic gadgets... what kind...
I am currently doing a project regarding rf harvesting battery pack...
My question is how can i make my charger stop if the battery is full?
transistors? limit switch?
What battery to use? Li-ion? Ni-MH? Li-Po? etc?... < i'm planning to charge stuffs like psp, iphone, ipod and mobile phones>...
excuse me, about the capacitor banks.. how do you switch it into series when it is fully charged? diodes maybe? but i need cap banks for dc application for my charging circuit tnx
Pls enlighten me about this topic...
I keep on reading about rf harvesting from ambient environment sadly now all of it is jumbled up T_T
When they say environment, does that mean anywhere?
What frequency do they use? why 900Mhz and not use 2.4Ghz or viceversa..
What battery could you...
Uhmm its about 5v @ 100mA.. i'm planning to charge a laptop.. do you think it is feasible? because as i saw laptop chargers is about 65w, if not charging of other electronic gadgets would do.. tnx in advance..
May i ask, if the bank is able to charge upto 80w how much would it discharge per...
Hi tnx for the reply... i am currently doing a project on energy harvesting.. i'm planing to store the energy first into a capacitor bank then transfer it to a battery.. the system is intended to charge e-gadgets..
Any help would be greatly appreciated because i'm kinda lost T_T tnx in advance ^^
excuse me, could you guys give me pointers on how to design a capacitor bank...
Like
how to derive its charging and discharging time and rate?
how does it work?
can you give me an example design <i mean circuit>
thanks in advance ^^
Good day!
I was wondering if you guys could give me some tips on how to design a
High gain Microstrip antenna array to be used for rf harvesting
If i read right the frequency i'm targeting is around
900-920Mhz <915 Mhz i think>
Sorry but i'm just new to antenna design, is there a software...
Yes thanks for the replies, after doing some readings i was thinking of using an array of narrowband microstrip antenna, but can anybody tell me is there a software to be used in designing one? thanks in advance ^^
I would like to ask for advice regarding my project, because i'm a bit lost T_T
I am planning to use the ff components:
a ultra wide band micro strip antenna as my receiver
dc to dc converter or charge pump
I have viewed various posts regarding this project but sadly i keep meeting a dead end...
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