| THE CIRCUITS - OPEN CIRCUIT | ||
With components and schematics introduced, the next step is to look at how circuits function – or in the case of an open or short, DON”T function! A circuit is said to be OPEN when a break exists in a conducting pathway. Although an open occurs whenever a switch turns off a circuit, an unwanted open may also develop. To restore operation, it must be located, its cause determined, and the repairs made. Sometimes the defect is easily found, such as visually finding a burned out resistor, or other obvious damage. Other defects require the use of test equipment to repair, such as a break in wire hidden by insulation or the melted element of an enclosed fuse. |
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