Post on 26-Feb-2016
description
Bicycle Powered Cell Phone ChargerECE 491 / ME 492 – Fall 2008
Purpose: Develop a device to charge a cell phone using free energy within 8 hours.Product: A bicycle powered generator.Description:
Transfer Storage Battery
Charges Storage Battery
Electronics
Utilizes Cigarette Lighter to Charge Cell
Phone
Charging Station
Smart Charging Circuit Schematic
R 13 6 0
C 12 5 0 F
C 2
1 0 0 u F
C 33 3 0 u F
D 1
D 2
Q 1Q 2 N 2 2 2 2
L 1
1
2
C 41 0 0 u F
V o u t
7 . 2 V d cV in p u t1 2 V d c
D 2s w it c h d io d e
logic gate
logic gate
logic gate
+5v
-5v
LED
R3
C7R14R13R15
R7C4R6
C5
R1
R4
R11
R16C2R5R12
R9
Q2 R2
Q3
Contacts Bicycle TireGenerator
Jim Karl(ME)
Michael Megiveron
(ME)
Brilleasha Moore(EE)
Ryan Sredzinski
(ME)
Frank Walega
(ME)
• A gear box rigidly mounted to a bicycle frame rotates a DC motor used as a generator. • A rubber wheel contacts the bicycle tire to rotate the gears of the drive train. • The power generated by the motor powers a smart charging chip.• A intermediate storage battery is either fast, trickle, or not charged based on the battery’s voltage.
• When the battery is done charging it is transferred to the charging station where the cell phone can be charged with a cigarette lighter charger.