#23787
Profile photo of ronym
ronym
Survivalist
member5

capacitor actually the eaziest thing
we just need alumunium / copper sheet or plate ( can be alumunium foil from bakery stuff )
few sheet of mica or mylar ( like OHP sheet )
or can be glass ( leiden jar… 18 century bottle capacitor )
.
making homemade battery also another interesting project
can be simple table salt battery
copper and alumunium plate ( can be nicle or dime and alumunium coin )
adding salt in water… and it’s done
we can light LED led by attaching 4-5 salt battery in series, so we can have “free” lighting
.
actually this idea for emergency only…
because we have different kind of battery which can last up to 5 year or even more
NiCd, NiMH, Li ion, Flooded Lead Acid Battery, Sealed Lead Acid Battery
plus Solar Cell, have simple electricity to light LED, radio, wifi, laptop, smartphone
.
we can use smartphone for other function beside communication
( in SHTF situation big chance that cell phone tower will not work )
such as photo or video storage and viewer, music player
and even as important daily life function
digital clock, calender, calculator, notes, etc