When he falls for the mysterious and brilliant Kay-Lee, he begins to question the moral implications of his studies. But is it too late to stop Dr. Darkkon from carrying out his evil plot? Fully updated throughout, this wickedly inventive guide introduces electronic circuits and circuit design, both analog and digital, through a series of projects you'll complete one simple lesson at a time.
The separate lessons build on each other and add up to projects you can put to practical use. You don't need to know anything about electronics to get started. A pre-assembled kit, which includes all the components and PC boards to complete the book projects, is available separately from ABRA electronics on Amazon. Using easy-to-find components and equipment, Electronic Circuits for the Evil Genius, Second Edition, provides hours of rewarding--and slightly twisted--fun.
You'll gain valuable experience in circuit construction and design as you test, modify, and observe your results--skills you can put to work in other exciting circuit-building projects. Electronic Circuits for the Evil Genius: Features step-by-step instructions and helpful illustrations Provides tips for customizing the projects Covers the underlying electronics principles behind the projects Removes the frustration factor--all required parts are listed, along with sources Build these and other devious devices: Automatic night light Light-sensitive switch Along-to-digital converter Voltage-controlled oscillator Op amp-controlled power amplifier Burglar alarm Logic gate-based toy Two-way intercom using transistors and op amps Each fun, inexpensive Genius project includes a detailed list of materials, sources for parts, schematics, and lots of clear, well-illustrated instructions for easy assembly.
We do not guarantee that these techniques will work for you. Some of the techniques listed in Evil Genius may require a sound knowledge of Hypnosis, users are advised to either leave those sections or must have a basic understanding of the subject before practicing them.
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Spark your creativity with this wickedly inventive guide. Electronic Gadgets for the Evil Genius, Second Edition, is filled with completely new, amped-up projects that will shock and amaze, such as super-big Tesla coils, lasers, plasma devices, and electrokinetics contraptions. Using affordable, easy-to-find components and equipment, each do-it-yourself project begins with information on safety, the difficulty level, practical uses for the gadget, and the tools needed to complete the project.
You';ll gain valuable skills while enjoying hours of rewarding--and slightly twisted--fun! Electronic Gadgets f Your right to use the work may be terminated if you fail to comply with these terms. McGraw-Hill and its licensors do not warrant or guarantee that the functions contained in the work will meet your requirements or that its operation will be uninterrupted or error free.
Neither McGraw-Hill nor its licensors shall be liable to you or anyone else for any inaccuracy, error or omission, regardless of cause, in the work or for any damages resulting therefrom. McGraw-Hill has no responsibility for the content of any information accessed through the work. This limitation of liability shall apply to any claim or cause whatsoever whether such claim or cause arises in contract, tort or otherwise.
About the Author Dave Cutcher is a retired high school shop teacher. He always coaxed his students to believe in themselves and that success in life was not limited to school. He taught young people and electronics was just the topic. Currently living in British Columbia, he teaches night school courses and does volunteer work within the community. People comment that he always thinks outside of the box. First are my current guinea pigs, who chose to be caged in a classroom with me for three years running.
Eric Raue and Eric Pospisal, both for being the gentler geniuses they are. And Brennen Williams, who was more patient with me at times than I was with him. It was a difficult year. He let me teach myself. Bryan Onstad gave me a goal to work toward and a platform to work on. Don Nordheimer was the first adult who actually worked through my material outside of the classroom environment.
At the same time, he proofed the material from the adult perspective. I owe heartfelt thanks for the encouragement from Pete Kosonan, the first administrator who enjoyed the creative flow of the students as much as I did. For the many others like Paul Wytenbrok, Ian Mattie, Judy Doll, and Don Cann, who continually encouraged me over the five years it took to develop this material.
For Brad Thode, who introduced me to the necessity of changing careers within teaching back in For Mrs. Schluter and Mrs.
Gerard, who taught me to believe in myself and recognize that there was room for creativity, not just what they wanted to hear. Those who take the time to learn electronics are viewed as geniuses. Do you want to learn how to control the power of electronics?
This text provides a solid introduction to the field of electronics, both analog and digital. Electronic Circuits for the Evil Genius is based on practical projects that exercise the genius that exists in all of us. Components are introduced as you build working circuits. These circuits are modified and analyzed to help explain the function of the components. Analysis is done by observation, using a digital multimeter, and using your computer as an oscilloscope.
You work from ideas to prototypes, producing a final product. Additional materials for this book, including lesson quizzes and answers keys, are available online at www. I hope you enjoy building the projects and reading the book as much as I enjoyed developing them.
RC timer Capacitor Micro Farad 2. RC timer Nano Farad 2. Isolate AC nF 3. RC timer Pico Farad 2. Indicator Diode LED 2. Light source 3. Acts like PBNC. Common Component Needs only voltage Packaging to operate. The Parts Bin on the following page has the complete parts list used in Part One. These are pictured in the front of the book in the section Common Components, Symbols, and Appearance. Electronics is BIG. You need a solid foundation. It starts out as a jumble. As you use the parts, the confused mass becomes an organized pile.
In Lesson 2, you will become acquainted with the two major tools that you will use throughout the course. Figure L In Lesson 3, you will build your first circuit on the solderless breadboard, a platform that allows NOTE Do not remove the small you to build circuits in a temporary format. They measurements when you set up and test your first are packed in a special antistatic tube or special circuits.
You have to be introduced to the currency and practice using it, but you become Semiconductors comfortable with it quickly. Now you need to unjumble the pile and become familiar with your These are the electronic components you will be electronic components.
As you identify them, set them aside into small groups. An example is illustrated in Figure L Capacitors As you see in Figure L, the capacitor shown is black and white. The colors of capacitors are different, depending on the manufacturer. Then again, all pop cans look alike, but each brand has Figure L a different label. Locate four small capacitors, different in size. Written on each are different values and other mumbo jumbo. Look for the They can be any color.
Resistors There should be lots of colorful resistors, nearly all the same size. Notice that in Figure L each Figure L resistor has four color bands to identify it. If you know the colors of the rainbow, you know how to There is another capacitor of a different shape to read resistors. Figure L shows the other capacitor used in Part One.
Again, it is presented in black and white, because the color will change as the manufacturer changes.
It may be marked as any of the following: 0. This SCR comes in this particular package. Not everything with this shape is an SCR, Figure L just as not everything in the shape of a pop can is your favorite flavor. Figure L is the normally open push button push to close the contacts , and Figure L shows the normally closed push button push to open the contacts.
They are identical except for the Figure L number or All other writing and marks are the manufacturer telling us how great they are. You should have lots of gauge solid wire with plastic insulation in many different lengths. Two battery clips are shown in Figure L Figure L Figure L Two printed circuit boards are premade for your projects: Figure L shows the one that will be used for the night-light project; Figure L shows the one that will be used for your SCR alarm project.
Figure L Lesson 2 Major Equipment Figure L The solderless breadboard and digital multimeter are two of the most common tools used in electronics. The Solderless Breadboard When smart people come up with ideas, first they test those ideas.
They build a prototype. The easiest way to build prototypes and play with ideas in electronics is on the solderless breadboard, shown here in Figure L The main advantage of the solderless breadboard is the ability to exchange parts easily and quickly. Figure L shows an example of what to avoid. The autoranging digital multimeter DMM offers beginners the advantage of being easier to learn.
The second style of DMM is not autoranging. This style is easy to use after you become familiar with electronics, but it tends to be confusing for the beginner. A typical dial of a Figure L nonautoranging multimeter is confusing, as you can see in Figure L Connection Wire A box of wire provided in the kit is displayed in Figure L Figure L These are different lengths convenient for the solderless breadboard.
However, if you need to cut the wire, wire clippers will work perfectly. Old scissors work as well. This setting is shown in Figure L Figure L Figure L Touch the end of both red and black probes to the colored covering.
The DMM should be silent Exercise: Mapping the Solderless Breadboard and read OL, as in the readout illustrated in Figure L, because the resistance of the insulation Strip the end of two pieces of wire far enough to prevents any current from passing.
Figure L Figure L Be sure the strip of insulating plastic is removed 1. Notice the letters Figure L Be careful not to nick the 2. Probe placement: wire inside the insulation. Use the other probe to find three holes connected to the first. The multimeter will indicate the connection. Figure L c. Draw these connections as solid lines. The solderless breadboard has a definite layout, as shown in Figure L One strip of the spring Figure L metal in the breadboard connects the five holes.
You can easily connect five pieces in one strip. The 3. Base points: two long rows of holes allow power access along a. Create four more base points at e25, b16, the entire length of the breadboard.
Use the other probe to find three holes connected to each of these points. Again draw these connections as solid lines. Additional base points: a. Choose two more base points on the outside long, paired lines.
These lines are not lettered or numbered but have a stripe Figure L of paint along the side. Mark them on the previous diagram. Setting Up the Solderless b.
Find three holes connected to each of Breadboard these points. You will have a standard setup for every circuit. Again draw these connections as solid The battery clip is connected to one of the first lines. Be sure that you can define the terms that row to the outer red line see Figure L It faces in the direction that the backwards, nothing will happen because the voltage is pushing. Your LED is a light-emitting diode.
You can view the animated version of Figure L at the website www. Never touch your LED directly to your power supply. Note in the picture how to identify the negative side. Remember that the LED, as a diode, is a one- way street. It will not work if you put it in backward. Figure L shows several resistors. The resistor symbol is illustrated in Figure L The resistor you need is the ohm yellow-violet-brown- gold.
When you have finished testing your circuit, take your battery off. Resistance is measured in ohms. Set up your breadboard as shown in Figure L Note Figure L shows what is happening. Like a that this picture shows the correct connections. The waterfall, all of the voltage goes from the top to red wire of the battery clip is connected to the the bottom.
The resistor and LED each use up part power diode that in turn provides voltage to the top of the voltage. Together, they use all the voltage. The black wire is connected to The ohm resistor uses enough voltage to make the blue line at the bottom of the breadboard. NOTE 1. Always complete your breadboard before you attach your power to the circuit. Attach your battery only when you are ready to test the circuit.
Set the DMM to direct current voltage 5. Measure the voltage used between the DCV. If you are using a multimeter that is following points: not autoranging, set it to the volt range.
Now add the voltages from 5. List working battery voltage in Figure L as well. Compare the voltage used by all of the parts to the voltage provided by the battery. The voltages added together should be approximately the same as the voltage provided by the battery. There may be only a few hundredths of a volt difference. Most often, these are identified using components within electronics. They are funny their color code Table L If you think the little things and come in all different colors.
And secret code is hard to remember, just ask any just like a rainbow, they come in all sizes too. To master electronics, you must first master the The gold bands are always read last. But beware! Can you handle the knowledge and When using the digital multimeter to measure power that lies beyond this task? Notice the two points of detail shown in Figure L That means the resistor Fixed resistors are the most common electronic being measured is 0.
Place one end of the resistor into your solderless breadboard and hold the probe tightly against it, but not touching the metal. You can press the other probe against the top of the resistor with your other finger. Figure L million ohms, or , ohms. When the M is there, never ignore it. As you use resistors, you quickly become familiar with them. The third band is the most important Figure L marker. It tells you the range in a power of In a pinch, you could substitute any resistor of nearly the same value.
For example, a substitution of a red-red- 1. Table L lists some of the resistors that you orange could be made for a brown-black-orange will need to be able to identify, because you resistor. But a substitution of a red-red-orange with a use them soon. Using a completely wrong value of exactly right. These resistors have a maximum resistor can mess things up. That means that the ohm resistor can be as much as ohms or Exercise: Reading Resistors as little as 95 ohms.
What is 5 percent of 1,,? That means that you should expect to see on the same have an idea of how to read resistor values before 1-kilo-ohm resistor? Thus, as you can see, an autoranging DMM really does make it much easier. It will bounce around, but try to take Your skin will conduct electricity, and if you an average. This will give an inaccurate value. A person sweats when they get anxious.
Watch the resistance go down for different resistors affect a simple circuit. Both the a moment. The resistor uses 4. Write each of these values as a number with most of the voltage, leaving just enough for the no abbreviations. LED to work. The LEDs need about two volts.
Lesson 5 The Effect Resistors Have on a Circuit Throughout electronics, resistors are used to control the voltage and flow of the current. Even though this lesson is not very long, it does take time. Do it properly and you will get proper results.
You will observe, chart, and describe the effects of different strength resistors when they are all set up in identical circuits.
A waterfall analogy explains how voltage is used up in this force of the falling water. Each component uses circuit. The water falls over the edge. Some of the part of the voltage. What happens if there is more resistance? More of More of the voltage is then used by the second the voltage is used to push the current through that load, the resistor. The remaining voltage is used by part of the circuit, leaving less to power the LED. This is represented visually in Figure L Have of more than eight volts.
It would burn out. The maximum resistance value is usually stamped onto the metal case. Figure L shows a picture of a potentiometer taken apart.
The potentiometer works because the sweep arm moves across the carbon ring and connects that to the center. The leg on the left is referred to as A, the center leg as C center , and Figure L the right leg as B. Lesson 6 The Potentiometer Some resistors change resistance over a wide range. You use potentiometers daily as volume controls. Potentiometers are still widely used, Figure L though they are being replaced by digital push buttons.
Clay is an insulator. Carbon is the to. A common variable resistor is the conductor. The action of the potentiometer is the sweep This useful device is often simply referred to as a arm copper on white plastic moving across the pot. A smaller version is also shown.
These are carbon ring Figure L The sweep arm allows called trim pots. Use a No. A harder pencil has too much clay and will not give good results. Figure L Figure L 2. If it is not autoranging, set it to maximum resistance. Figure L 3. As shown in Figure L, press the probes down hard against the pencil trace about an position changes. The resistance between A and C inch apart. You want to measure the resistance of the pencil trace, not the The distance between A and B is always the resistance of your body.
The value for this demonstration potentiometer is , ohm. The kilo-ohm value means the set value between legs A and B is kilo-ohm. Ideally, the minimum between A and C is 0 ohm directly connected , and the maximum between A and C should be kilo-ohm. The ratio between carbon and clay determines how easily electrons pass through the resistor. More clay means less carbon.
Less carbon means less Figure L conducting material. That creates higher resistance. The carbon in the ring is similar to the carbon a. Now record the resistance from the in a pencil.
If the DMM says mixture of carbon and clay. Soft pencils have less the resistance is out of range, move the clay and more carbon. A mark by a soft pencil will probes together until you get a reading. Hard pencils have lead that b. Move the probes closer together and then contains more clay and less carbon. These provide farther apart. Write down what you higher resistance.
Use the kilo-ohm potentiometer. Record your results. Measure the resistance between the two outer legs A and B. Adjust the knob and check the resistance between A and B again. Adjust the knob about halfway. Measure the resistance between the left and middle legs—A and C. Turn the knob a bit and check again. Note any change. Make sure that you have the battery hooked up properly through the power diode as noted on the schematic.
Explain what is happening. Why is there a ohm fixed resistor in this resistor LDR. The LDR changes its ability to circuit? It is commonly used to turn equipment on automatically Breadboarding the Circuit as night falls. Some cars use it as the input to the Note the similarities of the schematic shown in switch that turns on headlights as conditions Figure L and the picture of the circuit displayed change, even as they drive through a tunnel.
The in Figure L There is no room to place a value on most LDRs.
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