Basic Electronics Department of Electrical Engineering National Taiwan

Basic Electronics Department of Electrical Engineering, National Taiwan Ocean University 3/7/2013 Richard Kuo Assistant Professor www. ee. ntou. edu. tw

Outline Department of Electrical Engineering, National Taiwan Ocean University Fundamental Laws ► Tool/Equipment ► Basic Components l Resistor l Light Emitting Diode (LED) l Oscillator l Transistor l Operational Amplifier (OP Amp) l Ultrasound Sensor Circuit ► www. ee. ntou. edu. tw

Fundamental Laws Department of Electrical Engineering, National Taiwan Ocean University ► Ohm’s Law : Current = Voltage / Resistance ► Kirchhoff’s Voltage Law (KVL) total voltage around a closed loop must be zero V 4 = V 1 + V 2 + V 3 l Kirchhoff’s Current Law (KCL) total current or charge entering a junction or node is exactly equal to the charge leaving the node www. ee. ntou. edu. tw

Tool/Equipment Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Power Supply : adjustable outputs at 5 V, 9 V, 12 V, … ► Soldering Iron : to solder components and wiring them on PCB ► Multimeter : to measure voltage, current, resistance ► Oscilloscope : to measure waveform & frequency ► Power Supply Soldering IRON Multimeter Oscilloscope

Resistor Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw l Serial V = I * R 1 + I * R 2 + I * R 3 R = R 1 + R 2 + R 3 l Parallel V = I 1 * R 1 = I 2 * R 2 = I 3 * R 3 1/R = 1/R 1 + 1/R 2 + 1/R 3 EX 1. Practice using multimeter to measure resistor, voltage, current

LED (Light Emitting Diode) Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Power Up Display I = V / R = (9 V – 1. 8 V) / 470 ohm = 15 m. A Typically, a LED forward voltage is about 1. 8~3. 3 volts; it varies by the color of the LED. A red LED typically drops 1. 8 volts, but voltage drop normally rises as the light frequency increases, so a blue LED may drop around 3. 3 volts. EX 2. Practice soldering circuit & multimeter measuring

Crystal Oscillator Circuit Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Clock Source C 1 & C 2 = 10~30 pf

Crystal Oscillator Circuit Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw

Oscillator using 74 HC 04 Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw

7404 Oscillating Circuit Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Waveform Generator 1 KHz Ex 3. Practice circuit on bread board & measure output waveform

74 HCT 04 Oscillating Circuit Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Ex 4. Practice circuit on bread board & measure output waveform

Transistor Department of Electrical Engineering, National Taiwan Ocean University Reference: http: //score. ptivs. ptc. edu. tw/chenjy/ELECTRN/electrn 4. htm http: //140. 120. 11. 1/semicond/handout/chap 5. pdf www. ee. ntou. edu. tw

Speaker Driving Circuit Department of Electrical Engineering, National Taiwan Ocean University Transistor can amplify signal Input : signal to B Output : load on C or E (current from E to C) www. ee. ntou. edu. tw

Audio Generator output to Speaker Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw +5 V 1 KHz Gnd Ex 5. Practice circuit on bread board

。 Ultrasound Sensor Ranger Principle Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Ultrasound Sensor Ranging the distance by measuring the time from transmitting 40 KHz wave to received 40 KHz wave, Ultrasound Speed : V = 331. 4 + 0. 607 * T T : temperature C 0 : speed at absolute zero degree Distance t: travel time from sound wave transmitted to the reflection received

Ultrasound Sensor – transmitter circuit Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw MCU to generate 40 KHz square wave, and 74 HC 04 to amplify signal for ultrasound transducer to transmit Ex 6. Practice soldering circuit & Oscilloscope to measure frequency, waveform

Ultrasound Sensor – receiver circuit Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Ex 7. Practice soldering circuit & Oscilloscope to measure output waveform

General Disclaimer Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw The Lecture is strictly used for educational purpose. MAKES NO GUARANTEE OF VALIDITY ► The lecture cannot guarantee the validity of the information found here. The lecture may recently have been changed, vandalized or altered by someone whose opinion does not correspond with the state of knowledge in the relevant fields. Note that most other encyclopedias and reference works also have similar disclaimers. No formal peer review ► The lecture is not uniformly peer reviewed; while readers may correct errors or engage in casual peer review, they have no legal duty to do so and thus all information read here is without any implied warranty of fitness for any purpose or use whatsoever. Even articles that have been vetted by informal peer review or featured article processes may later have been edited inappropriately, just before you view them. No contract; limited license ► ► Please make sure that you understand that the information provided here is being provided freely, and that no kind of agreement or contract is created between you and the owners or users of this site, the owners of the servers upon which it is housed, the individual Wikipedia contributors, any project administrators, sysops or anyone else who is in any way connected with this project or sister projects subject to your claims against them directly. You are being granted a limited license to copy anything from this site; it does not create or imply any contractual or extracontractual liability on the part of Wikipedia or any of its agents, members, organizers or other users. There is no agreement or understanding between you and the content provider regarding your use or modification of this information beyond the Creative Commons Attribution-Sharealike 3. 0 Unported License (CCBY-SA) and the GNU Free Documentation License (GFDL);

General Disclaimer Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw Trademarks ► Any of the trademarks, service marks, collective marks, design rights or similar rights that are mentioned, used or cited in the lectures are the property of their respective owners. Their use here does not imply that you may use them for any purpose other than for the same or a similar informational use as contemplated by the original authors under the CC-BY-SA and GFDL licensing schemes. Unless otherwise stated , we are neither endorsed by nor affiliated with any of the holders of any such rights and as such we cannot grant any rights to use any otherwise protected materials. Your use of any such or similar incorporeal property is at your own risk. Personality rights ► The lecture may portray an identifiable person who is alive or deceased recently. The use of images of living or recently deceased individuals is, in some jurisdictions, restricted by laws pertaining to personality rights, independent from their copyright status. Before using these types of content, please ensure that you have the right to use it under the laws which apply in the circumstances of your intended use. You are solely responsible for ensuring that you do not infringe someone else's personality rights.

Analog to Digital Conversion (ADC) Department of Electrical Engineering, National Taiwan Ocean University NUC 140 : 8 -channel 12 -bit 800 KSPS ADC 智能電表(smart meter) 採用 16/24 -bit ADC 電子秤採用 16/24 -bit ADC Audio : 96 KHz, 24 -bit Stereo ADC www. ee. ntou. edu. tw

Direct-Conversion ADC Department of Electrical Engineering, National Taiwan Ocean University www. ee. ntou. edu. tw

Digital to Analog Converter (DAC) Department of Electrical Engineering, National Taiwan Ocean University ► Binary-Weighted Resistor DAC ► ΔΣ DAC (Sigma-Delta DAC) ► R-2 R Ladder DAC www. ee. ntou. edu. tw Vout = - (Vmsb + Vn + Vlsb) = - (Vref + Vref/2 + Vref/ 4)