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Published byAlexandre Kindell Modified over 4 years ago

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Science Olympiad 2014 Coaches Clinic MSU Circuit Lab (C)

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2 Changes from 2013 Theory 50-75%Practical 25-50% –Was 50-50 New topics –History, Wheatstone Bridge –Digital Logic Combinatorial only, no sequential circuits Schematic Symbols Boolean Logic, equations Circuit Simplification

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3 Electronics is Problem Solving Draw a schematic of an actual device Identify real parts (R, C, …) Read part parameters: values, tolerance, wattage, working voltage …

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4 Engineering Terminology Metric Prefix Engineering Units 3.15 k, 0.22 μF 1,255 kwh 4.7 mH Not Scientific Notation Confusion m (milli) M (mega) s (second) S (Siemens)

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5 Hints Answer the Question !! Units –If it asks for volts, dont answer in amps Dimensional analysis – sanity check Shouldnt get more out than in Get hands-on familiar with the real stuff

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6 Practical Portion Open ended – not cook book –Build something from a bucket of parts, power it up, then measure some things. –Draw a schematic, ID parts and values from a circuit board.

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7 Problem Areas (from 2013) Familiarity with parts

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8 ??? How to hookup? What goes where?

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9 How to Measure? Hook up the meter ? –Ohms –Volts –Amps Auto Scale vs. Manual AC vs. DC Common Sense Sanity Check

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10 Hands On Practice Students need to build circuits Measure voltage and current in circuit –Voltage Across –Current Through –Blow fuses ??? –Ground ?

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11 Regional Level Broad topic coverage General basic concepts Mostly single step Forward problems But thought provoking, not just memory

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12 State Level Teams have already succeeded at Regional We assume they can do Ohms law and other simple one-step problems Memorization of formulae will not be successful – teams will need to APPLY the fundamental principles to solve the problems.! Multi Step Backwards solutions

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13 Sample Questions Taken (modified) from 2013 Do NOT take as a definitive sample 2014 will have topics not shown Intent is to show level of complexity, word problem context, and schematics. NOTE: Digital logic not in 2013, but will be in 2014.

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