Lighting bulb via wireless power
Wireless electricity or wireless power transmission is one
of the emerging technologies today. The idea of this technology is transmitting
power from a source to any receiver using the free space, same as the TV and
radio transmission or same as your wireless lan or WIFI. Some of the
uses as of the moment are for charging
iPod, cellphones, digital cameras, mp3, iPhone and other electronic devices.
Materials:
A. Source---5V sine wave or square wave source @135kHz frequency
*555 IC square wave signal generator is a candidate see more
on 555 timer IC
B. C2----940nF cap or parallel 2 470nF Mylar or ceramic capacitor
C. L2----1.46uH air coil inductor or 15m #24AWG magnetic wound
@ 2 inches diameter
D. L1---100 turns #20AWG magnetic wire @ 2 inches diameter or larger
working:
1. Source coil powered by a main supply usually your power
outlet
2.Yellow line is the
energy flow from the source that is receiving coil
3.Conducting material that blocks some transmitted energies
(blue line)
4.The receiving coil that is connected to the device like
your cellphones, iPods, mp3, and others.
Resonant Frequency:
To achieve better wireless power transmission, the Power
source must be of the same frequency of receiving coil.
Power source frequency F1 = Receiving coil frequency F2
F1=F2= 1/(2π√(L2*C2))
*for more LC frequency balancing use LC frequency
calculator
