Thingiverse
Ghetto HBP
por bryanandaimee
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A HBP made from stripboard. The only trick is finding a supplier of large enough stripboard. I had to try it out before I sent boards out as prizes for the contest. http://www.thingiverse.com/thing:11497. Wouldn't be much of a prize if it didn't work. :) The PDF below is just my pathetic attempt to draw the solder connections I used to wire up the board.
Update: Made some measurements to help the designers out there. With three strips ganged together as in the PDF soldered in a long series trace across two stripboards the current at 12V is 10 amps cold and 8.2 amps hot. That gives you 120 Watts cold and 98 watts hot. So that means that the total resistance cold is 1.2 ohms, and individual strips have a resistance of 0.13 ohms. To calc. that I had to assume that the two wide buss strips were equivalent to 3 ganged central strips. So 0.13 per strip and about .04 ohms for each of the two wide strips on the outside.
So 4 ganged together should give about 0.13/4 * 9 = .3 ohms + 2*0
Update: Made some measurements to help the designers out there. With three strips ganged together as in the PDF soldered in a long series trace across two stripboards the current at 12V is 10 amps cold and 8.2 amps hot. That gives you 120 Watts cold and 98 watts hot. So that means that the total resistance cold is 1.2 ohms, and individual strips have a resistance of 0.13 ohms. To calc. that I had to assume that the two wide buss strips were equivalent to 3 ganged central strips. So 0.13 per strip and about .04 ohms for each of the two wide strips on the outside.
So 4 ganged together should give about 0.13/4 * 9 = .3 ohms + 2*0
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