I am working on a small experimental project, learning more and more about electricity and electronics.
So, I have found this broken mixer and, surprisingly, it has a 300W engine with magnets that produces current when rotated. Just what I needed.
Now, what I intend to do is make it capable of charging a laptop battery, at least. The laptop's charger
- needs 100 V ~ 200 V and 1.6 A (50 ~ 60 Hz) AC and
- outputs 19 V and 4.5 A DC.
Now, I need to take some decisions and understand several things better
First, I need to decide if I should make my generator output at least 100V and provide at least 1.6 A to the laptop's charger then let the charger take care of the battery. Looks like the simplest and most secure solution. But if the generator creates 19 V and 4.5 A and sends this directly to the laptop, less work is necessary to rotate it, I guess. Why would I produce high voltage then have the charger reduce it?
No matter, what option is better, I need to know: how to regulate the current, how to transform the voltage as needed, how to store it temporarily, at least to keep it steady.
I have read a little bit about diodes, Zener diodes, regulators, induction coils, transformers and capacitors. Now, I have to find out how and in which order to connect these (I have bunches of them, of all sizes and colors) in order to achieve something like what I want.
So, what should I do?
- Convert the AC current to DC using a diode bridge, and add a smoothing capacitor
- Regulate it with a Zener diode (and required resistors to limit current flow) or a regulator (preferably to 12 V)
- Convert the voltage from the regulated one to 19 V then use a capacitor to keep the amount if energy steady and provide it to the charger / battery?
- Use a regulator to stabilize the AC current
- Convert the voltage to 100 V and use a capacitor to store it
Maybe this looks like I am asking for a circuit scheme (which would help, too) but I also want to understand every step