Replica 1 plus Users Manual Tools required for assembly: Soldering iron, solder, wire cutters, needle nose pliers, and a multi-meter Before you begin: Make sure you have proper working space and that you heat your iron before beginning the assembly. This kit is not for beginners and Briel Computers assumes that you have some prior experience with soldering circuit boards. If you have never soldered circuit boards before or don’t feel you are ready, you should build other kits of a smaller, less complex nature before building your replica 1. Reading and identifying resistors: In previous revisions of the replica 1 kits, all parts were labeled in an effort to make it easier on the kit builder.
Now, the manual is being expanded to help newcomers to kits learn to identify the parts and read their values. Resistors have 4 colored bands on them that are used to identify the value. The first 3 are the value and the 4 th colored band is to identify the tolerance of the resistor. The 4 th band is usually silver for 10% or gold for 5% tolerance. Here is how to read the other three to get the value: Figure 9: Resistor color code chart Let’s assume the resistor you are trying to identify has the colors orange, and then another orange, then a red band followed with a gold band. So, to read the resistor, find the gold or silver band, that identifies the 4 th band.
Hold the resistor so the 4 th band is on the right side and read the first color on the left. The first color is orange which has a value of 3 according to the chart above. The second color is also orange which also has a value of 3. The 3 rd number indicates how many zeros follow the first two numbers. So, red is 2 zeros. This gives your resistor a value of 3, 3 and 2 0’s (00) or 3300=3.3K. This may take some practice but look through all the resistors and identify them without a meter if you need practice. © Briel Computers 2014 page 13