Mysteryname
- Sep 6, 2010
- 11
- Joined
- Sep 6, 2010
- Messages
- 11
Hey everyone.
This looks like a great site full of information. (I admit that I only just registered but still poking around)
The idea is to create a circuit that can input a AC voltage and output 5Volts DC (USB standard) to charge any USB device.
I've hit a bit of a problem with a circuit that I am designing.
I have a hub generator on my bicycle that is rated at 6v 3w power. While I spin the wheel by hand the amount of voltage it produces varies from 6.2v to 7v. So I can expect the voltage to be higher while I ride the bike. (This make simulation a little tricky.)
My idea is using a full wave rectifier a capacitor and a zener diode to 'regulate' the voltage to the output. I want to know if this is correct.
When I simulate a Voltage of 7vac.
The output is at 5.2v
But if I simulate a voltage of 8v the output is at around 5.7v Which is way too high for my liking
Is there are better or simpler way to create this circuit with out using linear regulators?
-Mystery
This looks like a great site full of information. (I admit that I only just registered but still poking around)
The idea is to create a circuit that can input a AC voltage and output 5Volts DC (USB standard) to charge any USB device.
I've hit a bit of a problem with a circuit that I am designing.
I have a hub generator on my bicycle that is rated at 6v 3w power. While I spin the wheel by hand the amount of voltage it produces varies from 6.2v to 7v. So I can expect the voltage to be higher while I ride the bike. (This make simulation a little tricky.)
My idea is using a full wave rectifier a capacitor and a zener diode to 'regulate' the voltage to the output. I want to know if this is correct.
When I simulate a Voltage of 7vac.
The output is at 5.2v
But if I simulate a voltage of 8v the output is at around 5.7v Which is way too high for my liking
Is there are better or simpler way to create this circuit with out using linear regulators?
-Mystery