Media Theory & Practice BASIC ELECTRONICS BASIC ELECTRONICS David Williams & Michael Shiloh © 2003 MakingThings LLC Media Theory & Practice BASIC ELECTRONICS OVERVIEW Session 1 Electricity is kind of like water The Components Inside Session 2 The Binary Miracle Switches can do all that? Arrange them just right‚ and you have a computer The computer does what you say millions of times a second Reconnecting to the real world Media Theory & Practice BASIC ELECTRONICS
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σI (V) For frequency f=1000Hz S(kΩ) 0.14521 8.88178E-16 I(V) σS (kΩ) 8.21861E-18 2.9173E-16 σI (V) For frequency f=10000Hz S(kΩ) 0.14521 8.88178E-16 I(V) σS (kΩ) 8.21861E-18 2.9173E-16 σI (V) (V‚I)pairs for a Slicon diode using a DC power supply # V (V) I (mA) 1 0.20 0 2 0.40 0 3 0.60 1 4 0.65 5
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2013Published online: 8 February 2013 Abstract In order to reduce the power consumption of RFID tags and increase the reading range of RFID systems‚ this paper proposes an ASK demodulator that uses a new approach to reduce the threshold voltage of diode connected MOS transistors as an obstacle in the design of the envelope detector. Also‚ an ultra low power comparator is used for further power reduction. This circuit has been simulated in a 0.18 μm CMOS technology to satisfy EPC Class 1 Generation
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1094 | 1586.3 | 2680.3 | Amplifier | 525 | 761.25 | 1286.25 | Diode | 519 | 752.55 | 1271.55 | b. System proposed by the accounting manager Product | Direct Labour | Burden | Machine Hour (Main & Mech) | Machine Burden | TC | ICA | 917 | 183.4 | 18.5 | 1480 | 2397 | ICB | 2051 | 410.2 | 40 | 3200 | 5251 | Capacitator | 1094 | 218.8 | 7.5 | 600 | 1694 | Amplifier | 525 | 105 | 5 | 400 | 925 | Diode | 519 | 103.8 | 12 | 960 | 1479 | *Based on direct labour rate
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Measures AC and DC voltages. μA/A ‚ mA/A — Measures AC and DC amperage. 1. Remove the screw on the back to open the battery compartment cover. Install one 9V battery (not included). / — Measures resistance and capacitance. / — Checks continuity and diodes. Hz/Duty — Measures frequency and duty cycle. 2. Replace the cover and secure it with the screw. EF r#HECKSELECTRICÞELDS OFF — Turns off the meter. o Connect the test leads q Use the buttons 1. Remove the rubber caps from the test leads
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Ultrasonic also find many application in medical instrumentation. FUNCTIONAL BLOCK DIAGRAM THE COMPONENTS • Transducer pair (MuRata‚ MA40S/R). • PIC16F873. • 12MHz Crystal. • Low power operational amplifiers (LM741). • Shottky Barrier Diodes (BYV10). • Low power operational amplifiers (LM358). • NAND Gates (4011B). • Inverter (4069UB). • Transistor (2SA1015‚ 2SA1815). • Seven Segment Displays (common anode). • Several resistors. • Several capacitors. CIRCUIT DIAGRAM THE
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Was the existing system adequate in the past? Why or why not? Why is it no longer adequate? The existing system was adequate in the past due to heavy reliance on direct labor hours. The ETO served as a central cost center‚ and transferred the costs to other divisions at direct costs plus allocated burden. Being in the late 1970s and early 1980s‚ technology testing of components required fewer cycles‚ and less complicated structures. Hence‚ such testing on products could be carried out by direct
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High Power Raman Fiber Lasers Raman Fiber Amplifier Combining EDFA and Raman Amplifier Conclusion January 8‚ 2008 Y. Lin: Raman Amplifier 1 Introduction Raman Amplifier was demonstrated in the 1980s Unavailability of high-power diode laser pump source Why do you need it : amplify signals from 1270 to 1670 nm any optical fiber can serve as the amplifying medium Raman process itself provides high-power laser Disadvantage: Cross-talk January 8‚ 2008 Y. Lin: Raman Amplifier
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is rated at only 100 Vdc). FIGURE 3 From Figure 3: A diode in series with a resistor is connected across the inductor to resolve the arcing phenomena across the switch. At t 0‚ when the switch is opened‚ the diode is forward bias hence allowing current to its branch. The current‚ I in this circuit is then given by: (VL - VF ) /R ‚ where VF is the forward voltage drop of the diode. The stored energy in the inductor is dissipated as heat in the resistor. Consequently
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$2‚680 AMPLIFIER $525 $761.25 $1‚286 DIODE $519 $752.55 $1‚272 Total $12‚510 (b) Two-burden pool accounting manager’s proposal Product Direct Labor$ E&A Burden Machine-hour Machine-burden Total Cost ICA $917 $183.40 18.5 $1‚480.00 $2‚580.40 ICB $2‚051 $410.20 40 $3‚200.00 $5‚661.20 CAPACITOR $1‚094 $218.80 7.5 $600.00 $1‚912.80 AMPLIFIER $525 $105.00 5 $400.00 $1‚030.00 DIODE $519 $103.80 12 $960.00 $1‚582.80 Total
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