How to Convert 12Volt DC to 2Volt DC
- 1). Cut 2 pieces of 22-gauge wire 3 inches long, and 2 pieces 8 inches long. Strip 1/4-inch of insulation from the ends of each wire, using the wire strippers.
- 2). Solder the end of one 3-inch wire to the center lug of the 10K-ohm variable resistor. Solder the end of the second 3-inch wire to one of the remaining two lugs. Insert the free ends of the wires into separate columns on the solderless breadboard.
- 3). Place one lead of the 47K-ohm resistor in the breadboard so it connects to one of the wires on the variable resistor. Place the other lead into a free breadboard column. Insert one lead of the 10K-ohm resistor into this column. Set its other lead into a free column. Insert one end of an 8-inch wire so it connects to this column. Insert the second 8-inch wire so it connects to the unconnected lead of the variable resistor.
- 4). Connect the free end of the first 8-inch wire to the ground terminal of the 12-volt DC power supply. Connect the free end of the second 8-inch wire to the power supply's positive terminal.
- 5). Turn the power supply on. Turn the multimeter on and rotate its mode selector to the DC voltage setting.
- 6). Touch one multimeter probe tip to one lead of the 10K-ohm resistor. Touch the other probe tip to the resistor's opposite lead. Observe the meter's display. If you see a negative voltage, switch the probe tips on the resistor so they touch the opposite resistor leads.
- 7). Turn the shaft of the variable resistor until you see 2 volts on the meter display.
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