Lab_1 - EE 101A / Winter 2010 Lab #1 EE 101A Lab...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
EE 101A / Winter 2010 Lab #1 Page 1 of 9 EE 101A Lab Introduction Welcome to EE101A! The lab component of the course is intended to complement the material you learn from lecture by having you analyze and build a very useful circuit using basic electronic components. Our hope is that you will gain an intuitive understanding of how many of these components (resistors, capacitors, diodes, and transistors) work in a circuit, and also become familiar with measurement and simulation tools used in circuit design and analysis. 1. Description The circuit we’ll be building is a variable output AC/DC voltage converter. As shown below, it plugs into a standard electrical wall outlet and outputs a DC voltage that can be adjusted from 0 V to approximately 12 V. We’ll explain what AC, DC mean very soon. 2. Lab Format & Goals This project will be broken into six separate lab assignments. Each will focus on one part of the circuit (except Lab 6 which deals with circuit simulation). We will include some background information that will help you better understand what you will build. If you keep up with the lecture material, the lab assignments should not require significant outside reading or preparation. We will provide space on the lab handouts for your answers and measurements. Turn in the completed handout as your report at the end of each lab. It is very important that you COME PREPARED . At the end of the quarter, each of you will hopefully have a working AC/DC converter that you can keep and show to family and friends! The scheduled lab time should be sufficient to complete the weekly assignment, so the TAs may hold short discussion sessions to review lecture material or answer any questions you may have. And last, but not least, we do hope that you have fun!
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EE 101A / Winter 2010 Lab #1 Page 2 of 9 Lab 1: Electrical Outlet & the Transformer (week of 1/11/10) 1. Background: What comes out of the wall? Most of our first interaction with electricity probably involved plugging some appliance or gadget into the wall outlet and then turning it on. Despite being one of the most common things around, most people, including many electrical engineers, do not know what comes out of that outlet. Let’s take a brief look at this subject before moving on. Figure 1. Electrical power delivery system Fig. 1 shows a typical electricity delivery path. The power plant generates electrical power and delivers it on high voltage lines (you’ve probably seen the large towers along I-5 or other highways) to your neighborhood power station. It sends a 60 Hz AC (alternating current) signal, which means the voltage waveform is sinusoidal with a frequency of 60 cycles per second. Most of the electrical devices we plug into the wall run on DC (direct current) signals, because circuits and other electrical components require a stable and constant power supply voltage. So why the trouble of generating and sending an AC signal, just to have it converted back to DC? It’s because AC signals are a more efficient and practical
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/30/2010 for the course EE 101A taught by Professor Wong during the Winter '08 term at Stanford.

Page1 / 9

Lab_1 - EE 101A / Winter 2010 Lab #1 EE 101A Lab...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online