Apr 13 2005 web.mit.edu/8.02x/wwwQuiz 1 Quiz 2Quiz 3Quiz 42004 Quiz Grades706870 65Apr 13 2005 web.mit.edu/8.02x/www2005 Quizzes6872Quiz 1 Quiz 272Quiz 3Apr 13 2005 web.mit.edu/8.02x/wwwFAQs• There is no “passing grade” for individual quizzes• We will sum up all points for quizzes, psets, MP,check-off.– Quizzes 60%, psets 20%, MP 10%, check-off 10% of finalgrade• C/D boundary will be in the low 60’s of possiblepoints• A/B ~ mid 80s, B/C mid 70s• If your score is significantly below 60%, act now!Apr 13 2005 web.mit.edu/8.02x/wwwExperiment AMP• Questions on Web• Due 4/29• 4 bonus points this week• Please:– Do not get creative with layout!– DO NOT ROTATE op-amp!Apr 13 2005 web.mit.edu/8.02x/wwwDotExp. AMPop-ampApr 13 2005 web.mit.edu/8.02x/wwwDemo: Marconi CoilsPrimaryNSNPSecondarySpringIronBatterySwitchNP<< NSApr 13 2005 web.mit.edu/8.02x/wwwDemo: Marconi CoilsPrimaryNSNPSecondarySpringIronBatterySwitchNP<< NSApr 13 2005 web.mit.edu/8.02x/wwwDemo: Marconi CoilsPrimaryNSNPSecondarySpringIronBatterySwitchNP<< NSApr 13 2005 web.mit.edu/8.02x/wwwMarconi Coils• Mechanically ‘chops up’ DC power• Used to power early wireless telegraphs(connect spark gap to antenna)Bedford, MA (1912)Apr 13 2005 web.mit.edu/8.02x/wwwDemo: Two CoilsSpeakerRadio• Signal transmitted by varying Field• Coupling depends on Geometry (angle,
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