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Science Olympiad 2014 Coaches Clinic MSU Circuit Lab (C)

Science Olympiad 2014 Coaches Clinic MSU Circuit Lab (C). 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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Science Olympiad 2014 Coaches Clinic MSU Circuit Lab (C)

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  1. Science Olympiad2014 Coaches ClinicMSUCircuit Lab (C)

  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

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

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

  5. Hints • Answer the Question !! • Units • If it asks for volts, don’t answer in amps • Dimensional analysis – sanity check • Shouldn’t get more out than in • Get hands-on familiar with the real stuff

  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.

  7. Problem Areas(from 2013) • Familiarity with parts

  8. ??? How to hookup? What goeswhere?

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

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

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

  12. State Level • Teams have already succeeded at Regional • We assume they can do Ohm’s 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

  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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