Hubby was watching a longshoreman history showHe wonders why a crane lifts out the incoming cargo trailers on the ship, one at a time, and places them quot;somewhere elsequot;Then when the ship is empty, the crane now loads new export cargo trailers onto the shipHis question is: Why doesn't the crane pick off an incoming cargo from the ship and set it down and then carry an export cargo trailer on it's way back? Is there some rule that the ship has to be completely emptied before refilled? Seems double work.
Should be no problem for the batteries but the aluminum foil probably won't lastTry a relay or if you need the aluminum sheets use them to switch an electronic driver circuit so they do not have to switch much currentRepeated opening of the aluminum sheet switches will have a shorter life as the current goes up.
You can use the LM3402This IC is desing to properly power high power LEDs.
Most of the time they just empty a row of cansthen they load up that same role or the nextThe reason why they just unload or load a row at a time is that they are stacked in piles and shuttled over the the ship there is a line of yard goats or UTR'sAs the crane works there are some strict rule about were you can go or stage.If some thing happens a good day can get go very bad if the bottom falls out and the product drops of there is some mechanical failureI know if you wacth the harbor for any time it really looks like not much is happening since boxes are just being moved, but if you look at the numbers over the day you would be amazed at how much stuff does get moved.
