Introduction: Bike Volt
This report explains step by step how the project was constructed. Bike- Volt consists in a voltage rectifier that takes AC from a dynamo (that works with the wheel spin of a bike) and rectifies it (DC) in order to supply voltage for cellphone charging.
-4 diodes (1N4007).
-1 capacitor 100 uF at 35 volts.
-Tip 32C (PNP).
-Power dissipater (spider).
-Pottery resistor 2W- 100RJ
-1 regulator (LM7805).
-1 capacitor 10 uF at 63 volts.
-1 capacitor 0.1 uF at 250 volts.
-1 female USB port.
In a protoboard, put four diodes in the same order as picture or build a diodes bridge.
Note: Protoboard with four 1N4007.
Connect two wires (cathode-cathode and anode-anode) with any of the possible nodes to make a parallel circuit and wire the capacitor.
Note: The first wire is to make a positive terminal and the second wire is to make a ground terminal. Remember that is the capacitor of 100uF at 35 volts.
Connect the transistor Tip 32C.
Note: This transistor is a PNP configuration, so do not forget to connect it in the same order as the datasheet explains.
Wire the resistor in parallel with the first pin of the transistor and the last pin of the transistor.
Note: We are going to simulate that is a pottery resistor because we need it with a capacity power of 2 watts.
Connect the voltage regulator.
Note: Remember, first pin-input signal, second pin-ground and third pin-rectified signal.
Wire the capacitor, in parallel.
Note: Use the active nodes to wire in parallel the capacitor of 10 uF at 63 volts.
Connect the capacitor(104), in parallel to regulate the peaks of the dynamo.
Note: The 104 capacitor does not have negative or positive terminals. It does not matter the way you polarized it.
Connect a female usb in parallel with the capacitor (104).
Note: Check out the datasheet of the female usb for an appropriate connection.
This is the final step. Connect the dynamo to the circuit (cathode-anode, cathode-anode).
Note: The motor will simulate our dynamo. You can connect any AC source to have an output of 5 volts.
Step 10: URL for the Demonstration of the Circuit
Participated in the
MAKE ENERGY: A US-Mexico Innovation Challenge