Advertisement

Make a hand-crank rechargeable flash light

2 of 9
capacitors
credit: brunoip

Prepare the capacitors

The key to the lantern is to put capacitors in parallel to be interpreted as one large-capacity capacitor. I used 40 capacitors of 1000uf 10v. If you use more capacitors, the torch will stay lit longer.

Solder four rows of 10 capacitors each one. Then solder the rows together.

2 of 9

More Slideshows

MOST POPULAR RIGHT NOW

WHAT'S HOT ON FACEBOOK