Difference between revisions of "Classes/2010/VIS147A/Lab1"
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Breadboard Setup and Voltage Supply: | Breadboard Setup and Voltage Supply: | ||
− | # Connect the positive and negative rails running along the top and bottom of the breadboard | + | # Connect the positive and negative rails running along the top and bottom of the breadboard--red wire for positive and black wire for negative (pic). |
− | # Clip the end of the power adapter off, | + | # Use the continuity setting on your multimeter to check the connectivity of the positive and negative rails. (pic). |
− | # With the DC voltage setting on the multimeter, | + | # Clip the end of the power adapter off, saving enough wire with the plug to reconnect the two later in the semester (i.e. do not clip the wires too close to the plug or you will not be able to reattach and solder the two later) |
− | # Using red and black alligator | + | # With the DC voltage setting on the multimeter in the appropriate range, indentify which is the positive and which is the negative wire comeing from the adapter. Is the wire labelled in any way? Tie a knot in the positive wire, so that it is shorter then the other (preventing a short-circuit). This is also an easy means to distinguish between the two. |
− | # Check | + | # Using one red and one black alligator clip and a short length of red and black hookup wire, connect the positive and negative lines from the power supply to the appropriate power buses on the breadboard. |
+ | # Check that you were correct using a multimeter or bulb/resistor combo. (The bulbs are 6V bulbs, we have a 12 Volt supply. How can we see that current is flowing without burning the bulb out?) | ||
==Symbol-matching Exercise== | ==Symbol-matching Exercise== |
Revision as of 22:54, 11 January 2010
Topics Covered
- connectivity on the breadboard
- positive and negative polarity on a power supply. positive and negative voltages.
- cutting and stripping wires. how to use your wire clippers and your wire strippers.
- how to use your multimeter to measure continuity, voltage differential.
Activities
Distribute the kits. Please keep them in the lab, with the understanding that once you have paid for them with Judi you can take them home. (We will have the final price in next week, please bring a check addressed to the UC Regents).
Breadboard Setup and Voltage Supply:
- Connect the positive and negative rails running along the top and bottom of the breadboard--red wire for positive and black wire for negative (pic).
- Use the continuity setting on your multimeter to check the connectivity of the positive and negative rails. (pic).
- Clip the end of the power adapter off, saving enough wire with the plug to reconnect the two later in the semester (i.e. do not clip the wires too close to the plug or you will not be able to reattach and solder the two later)
- With the DC voltage setting on the multimeter in the appropriate range, indentify which is the positive and which is the negative wire comeing from the adapter. Is the wire labelled in any way? Tie a knot in the positive wire, so that it is shorter then the other (preventing a short-circuit). This is also an easy means to distinguish between the two.
- Using one red and one black alligator clip and a short length of red and black hookup wire, connect the positive and negative lines from the power supply to the appropriate power buses on the breadboard.
- Check that you were correct using a multimeter or bulb/resistor combo. (The bulbs are 6V bulbs, we have a 12 Volt supply. How can we see that current is flowing without burning the bulb out?)
Symbol-matching Exercise
Familiarize yourself with your components:
- Using the reference chart at the beginning of Practical Electronics for Inventors, match items from your kit with the symbols in the chart below.
Supplies
- wire clippers
- wire strippers
- 12V DC 500 mA power supply/AC Adapter. (do you have any of these at home? In case you burn one out, it may come in handy. check your old scanner, phone charger, etc., they are all labelled with voltage, current, polarity).
- solderless breadboard
- black and red hookup wire.