Unit 17 - Intro Semiconductors and Power Supplies F07

# Unit 17 - Intro Semiconductors and Power Supplies F07 -...

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Given a series circuit containing a 8Ω resistance, a 470 mH inductance, and a 47 nF capacitor, compute the resonant frequency, Q, and interpret the quality of the filter. Solution: f 0 = 0.159/ (LC) = 0.159/ [(470)(10 -3 )(47)(10 -9 )] = 0.159/ (.000000022) = 0.159/.000149 = 1067 Hz Q = X L /R = (2 π fL)/R = [(6.28)(1067)(.47)]/8 = 3149/8 = 394 Interpretation: Q of 394 is probably not good. (is beyond 50-250 range)

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7 17 29-Oct Mon AC Motors Primer Ch13 AC/DC Generators/Oscope SA 13-1, 13-2 18 31-Oct Wed Ch 9-13 Summary Ch9-13 (SA 10-3, 11-3, 11-5, 12-2) Summary Handout 19 2-Nov Fri Exam #3 - 8 20 5-Nov Mon Inductance & RL Circuits Ch14 RLC Circuits SA 14-1 21 7-Nov Wed Inductance & RL Circuits Ch14 (SA 14-2, 15-2) 22 9-Nov Fri Capacitance and RC Circuits Ch15 SA 15-1 9 12-Nov Mon Veteran's Day: No School RLC Circuits 23 14-Nov Wed Tuned RLC Circuits Ch16 (SA 16-2, 16-3) SA 16-1 24 16-Nov Fri Diodes & Power Supplies Ch17 SA 17-1 10 25 19-Nov Mon Diodes & Power Supplies Ch17 NO LAB 21-Nov Wed Thanksgiving Holiday 23-Nov Fri Thanksgiving Holida y 11 26 26-Nov Mon Ch 14-17 Summary Ch14-17 Diodes and Power Supplies Summary Handout 27 28-Nov Wed Exam #4 - (SA 17-3, 17-4, 17-6, 17-7) 28 30-Nov Fri Final Exam Review 5-Dec Wed Final Exam 0710-1000)

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Electronic Systems Chapter 17: Intro Semiconductors and Power Supplies
Ch17: Semiconductors and Power Supplies Ch17: Semiconductors and Power Supplies Today’s Stuff: - 17-0 Vacuum Tubes - 17.1 Semiconductor Basics - 17.2 Semiconductor Diodes Next Time (Friday): - 17.3 Power Supplies - 17.4 Voltage Regulation - 17.5 Voltage Doublers

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Why an IT graduate should know this . . . - Some Learned people (but most technical types) . . . . - Semiconductor devices underpin the modern electronic world . . . Ch17: Semiconductors and Power Supplies Ch17: Semiconductors and Power Supplies
Semiconductor History Semiconductor History

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17.0: Semiconductor History 17.0: Semiconductor History
. . . 19 year old Edmund Becquerel first observed (and recorded) the photoelectric effect in 1839 . . . 17.0: Semiconductor History 17.0: Semiconductor History

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. . . Thomas Edison noted the “Thermionic (Edison) Effect” in 1883 . . . . . . Experimental configuration conducts electricity in one direction 17.0: Semiconductor History 17.0: Semiconductor History
. . . J. A. Fleming developed vacuum tube rectifier (diode) called “Fleming’s Valve” in 1904 17.0: Semiconductor History 17.0: Semiconductor History

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. . . In the same year (1904) Lee De Forest patented a three element vacuum tube “amplifier” . . . 17.0: Semiconductor History 17.0: Semiconductor History
. . . Bell Labs (Bardeen, Brattain, Shockley) patented the first transistor in 1948 (1947?) . . . 17.0: Semiconductor History 17.0: Semiconductor History

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. . . Texas Instruments (Jack Kilby) invents the integrated circuit in 1958 . . . 17.0: Semiconductor History 17.0: Semiconductor History
Today, the Pentium 4 processor houses 55 million transistors (each consisting of two “latching” diodes: 110 million total)                                                                                                                         17.0: Semiconductor History 17.0: Semiconductor History

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Semiconductor Basics
17.1: Semiconductors About . . .

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## This note was uploaded on 04/02/2008 for the course IT 137 taught by Professor Doc during the Fall '08 term at Cal Poly.

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Unit 17 - Intro Semiconductors and Power Supplies F07 -...

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