18th February 2008 01:36 AM
Miller Solar engine + Joule Thief
Hi I am new to the forums. I do not know exactly how to post this problem.
I had this nagging idea that I think would work. I read Make magazine and have built a lot of those projects. I was wondering if I could combine two projects. A symet and a joule thief. I have tried putting the joule thief before the capacitors after the capacitors.. Before the FLED still no luck.
The reason I want to do this is because the Symet only really moves in midday sunlight and is inactive through the other parts of the day.
18th February 2008 06:21 AM
Try just the solar panel?
If nothing try to put it where the motor is. Take the motor out.
18th February 2008 06:26 PM
I I tried that the motor will not turn. I think it is because the Joule thief circuit produces pulses of energy (50,000 or so a second). The solar cell only produces 2v so not have enough to turn the motor.
I also tried to have the Joule thief charge some capacitors. It doesn't charge them enough for the FLED activate and turn the motor.
Getting rid of the motor would kill the symet, it is supposed to move around in sunlight.
19th February 2008 04:58 AM
On the other hand if you rectify the Joule thief output and filter by say 4.7uF/64V capacitor, the reultant DC would turn a motor connected with a limiting resistor in series.
28th February 2008 09:24 PM
help. can you point me to how I could do this or a Schematic
28th February 2008 11:51 PM
You do realize that the Joule thief raises the voltage, but you sacrifice current. Works fine for LEDs, 15-30mA is plenty. A pager motor might need a little more...
Electronic Circuits |
Page Time: 0.07910 seconds Memory: 7,386 KB Queries: 17 Templates: 0