33000 Parallax Inc, 33000 Datasheet - Page 7

• Manufacturer Part Number: 33000
• Description: Power Management Modules & Development Tools 30W Solar Cell Kit
• Manufacturer: Parallax Inc

Specifications of 33000

• New! Us2012 Catalog Page: Solar Cells_Panels
• Voltage - Output: *
• Operating Temperature: *
• Current Short Circuit (isc): *
• Package / Case: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section B – Tabbing Wire Preparation: Patience Is Essential!
This panel is designed with (12) solar cells connected in series, yielding about 6.0 VDC (12 cells at 0.5
volts each). Figure 12 shows the connection scheme that we ultimately want to accomplish. To wire
solar cells in series, we need to connect the top of the first cell to the bottom of the second cell, and the
top of the second to the bottom of the third, and so on…until all (12) cells are connected in series.
Since the bottom of the cells are not accessible after they’ve been mounted on the Base Panel, we need
to solder the tabbing wire to these underside connections first.
appropriate location on the Base Panel, and make the top-of-cell solder connections last.
Step 6 — Preparing the Tabbing Wire and Opening the Solar Cell Pack
Copyright © Parallax Inc.
Measure and pre-cut (18) pieces of flat tabbing wire, 10” long each.
tabbing wire to get rid of any kinks, so the wire will solder perfectly flat against the cell: Firmly grasp
an end of the wire with one hand, pinch the wire with your other hand’s index finger and thumbnail,
and then slowly draw out any kinks or curves in the wire. Be wary of “crimped-cuts” on the wire
ends, which will not lie flat during the soldering process. Take the time to flatten out these little
imperfections, and subsequent assembly will go much smoother.
WATCH THE VIDEO demonstrating safe cell handling and soldering techniques before beginning.
Search “33000” at www.parallax.com, and then find the video link on the 33000 product page. If you
break a cell in any of the following steps, don’t panic. Go to page 19 and read through Section F –
...Oh, no… I broke a cell! You may be able to salvage it.
Make sure that you have a clean and flat surface
for this stage of assembly.
Place the cell package with the “cut along dotted
lines” side up, as shown in Figure 13. Use an
X-acto knife to cut an “X” diagonally across the
plastic wrapper, as shown on the package.
Carefully lift the top piece of plywood off of the cell
package. Carefully open the paper wrapper to
expose the cells, but leave them in their “stack.”
Do not spread the cells out across your work
area – they are far less likely to chip, crack, or
break when kept in their “stack.”
Tabbing wire soldered to first cell’s top bus-bar
1st cell
Tabbing wire soldered to adjacent cell’s bottom bus-bar
30 Watt Solar Panel Kit (#33000)
Figure 12
2nd cell
Top of cell
We’ll then place each cell into its
Figure 13
v1.0 2/19/2010 Page 7 of 20
Carefully straighten each
…nth cell