This simple hack save planet :D or maybe your wallet ....
- It is just small round piece of board
- micro USB for delivery power
- 3V regulator
- alligator clip holes for your multimeter to measure curent
- single board with micro usb is CR2016 =1.6mm + adapter is CR2032 = 3.2mm ... EASY ?????I
understand is not like real CR2032 but I believe that help with development battery operated devices.
I really love all your projects at https://www.tindie.com/stores/bobricius/ but what I really need is PCB to read a single solar cell 0.5V 8A input and give useful 5V , 12V voltage as output or serve as a Li-Ion cell charger
Not sure if any of your other Joule thief projects could be redesigned to accept 0.5V as input
thank you 400mA Step-Up DC/DC only in theory I can boost voltage with lens concentrated cell but still too much energy wasted China manufacturers can cut 8A 0.5V single solar cell into smaller parts connected in serial to boost output voltage Unfortunately, either cutting or soldering is heavy I have tried to order pre-soldered solar cell strings from solar company to get it laminated. Unfortunately, growing solar modul in size, laminating is more expensive and complicated and there is a higher risk of getting the job broken easily. So I would love a single solar cell DC DC step up inverter one day
You'll need to think beyond Joule thief as it isn't practical for that kind of wattage nor that voltage.
I am working on my project, but don't think it would deliver 4W. I am guessing 0.5W (or may be a bit higher) might be a realistic number. I don't have the answer until I try. 0.5V is not an easy voltage to work with as most common parts do not work on that natively.
I really love all your projects at https://www.tindie.com/stores/bobricius/
but what I really need is PCB to read a single solar cell 0.5V 8A input and
give useful 5V , 12V voltage as output
or serve as a Li-Ion cell charger
Not sure if any of your other Joule thief projects could be redesigned to accept 0.5V as input
https://www.tindie.com/products/bobricius/joule-thief-smd-dcdc-white-led/
operating voltage: 0.9V-1.5V
output current adjusted to: 5mA
input current : 15mA
https://www.tindie.com/products/bobricius/75mv-joule-thief-powered-with-body-heat/
So the question is how to turn 0.5V 8A (4W) input into 5V 0.8A output .
greetings,