I built the Solar Briefcase using six Chronar 6" X 12" solar panels that I bought from a local surplus dealer and made the case out of plywood that I had left over from previous project.
The Solar Briefcase can produce an output of about 10.8 watts in
optimal conditions.
I later made the Solar Book
which is much more practical. I sometimes use the Solar Book to power
my old portable multiband transistor radio.
Here are some of the Solar Briefcase output configurations that can
be set with the toggle switches.
6 Volts @ 1800 ma.
12 Volts @ 900 ma.
18 Volts @ 600 ma.
36 Volts @ 300 ma.
On the Solar Briefcase I used tie wrap ends to hold the solar panels in place. I cut the strap portion of the tie wrap and locking tab off with a utility knife. Then place the tapered edge of the tie wrap ends against the solar panels and mount the tie wrap ends in place with screws.
I also mounted the banana jacks into a piece of angle aluminum. The angle aluminum is held to the case with the tie wrap ends and a spring tensioned under a screw so the banana jacks can be tilted upward to create clearance when using them.