I had to do something with it, so I "pimped" my torch :)
1 supercapacitor (1F, 5,5V)
Step 1: Open the Torch
Then remove the 2 screws. Be careful when separating the 2 halves because the spring of the crank is very hard.
Step 2: Change the Circuit
Before changing the connections, it had 2 positions:
- position 1: the crank powers the leds
- position 2: the battery (3 LR44 batteries) powers the leds
After it will have the following positions:
- position 1: the crank charges the battery
- position 2: the battery powers the leds
And now, the schematics, very basic:
I have inserted a led in order to prevent the capacitor from discharging to the crank. And it turns on when the capacitor is being charged. There are many instructables already that explain this, so many thanks to You people for inspiring me in saving my fake torch!
Step 3: Put Everything Back Together
Voila! You have now a real 10 leds dynamo torch, with built-in rechargeable battery.