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Electronics. Projects. FOR. DUMmIES‰ by Earl Boysen and Nancy Muir Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way. Electronics Projects, VoL 1: A compilation of selected construction projects and circuit . Simple Touch Dimmer Using Triacs Simple Electronic Sand-glass. Introduction to Inductors and Transformers. Test Your Knowledge #2. Experiment # The Magnetic Bridge. Experiment # The Lighthouse.
It may damage the IC UM Tip: See Appendix I to see resisatnce calculations for 4 M resistor. This circuit uses a 9 volt battery 50 www. Step3: Assemble all remaining parts and insert the batteries at the end. Step4: You can change the wire contact connecting R1 and connect it to R2 to increase timing. In breadboard diagram, 3 4M resistors are used and current connection is using only 2 of them. Timer project panel for MY Kit 51 www. Every electric appliance is having an internal resistance, if its working fine.
And we can measure this resistance using this circuit, It can measure up to k ohms of resistances. It just produces a sound to confirm connectivity.
Step3: Assemble all remaining parts and insert the batteries at the end Step4: After battery is connected, test the circuit with some appliance like an adaptor. And see if circuit produces some sound.
Continuity tester project panel for MY Kit 53 www. Step4: After battery is connected, test the circuit with some appliance like an adaptor. And see if LEDs are blinking fine or not. More Ideas You can transform the previous circuit to a bike turning indicator circuit, A practical and useful circuit which can be used in bikes.
Lets assemble the circuit on MY Kit project kit. Please refer right hand side figure to identify the correct design from panels. You can play up till you are not out.
Please refer above figure to identify the correct design from panels.
This circuit can be used in TV transmission and also for remote controlled toys or play things. By using this circuit, there is no chance to cheat as the circuit operates at such a high speed that the circuit is almost imperceptible to the human eye. Metal Detector Circuit : This is a simple metal detector circuit which is very useful for checking the person in shopping malls, hotels, cinema halls to ensure that person is not carrying any explosive metals or illegal things like guns, bombs etc.
Panic Alarm : This panic alarm circuit helps us to intimate others regarding our bad situation without any delay. It is more useful when an intruder entering our house or bad health status at which we are unable to intimate to the people around us.
Wire Loop Breaking Alarm : This circuit works as a continuity tester device which tests the continuity of the wire at hand. It is an indispensable tool to check broken wires and undesired shorting of wires.
Rain Alarm Circuit : Rain water detector will detect the rain and make an alert; rain water detector is used in the irrigation field, home automation, communication, automobiles etc. Here is the simple and reliable circuit of rain water detector which can be constructed at low cost. Automatic Plant Irrigation System : This project circuit is more useful in watering plants automatically without any human interference. It is more useful when the owner is not present in the home for few days.
Lead Acid Battery Charger Circuit : Lead Battery is a rechargeable battery and is more useful in our real life as it will dissipate very little energy, it has very low energy to weight ratio, it can deliver high current, can work for long time with high efficiency and is very low cost.
Motion Detector Circuit : The motion detector is not only used as intruder alarm but also used in many applications like home automation system, energy efficiency system, etc. The motion detector will detect the motion of the people or objects and give the appropriate output according to the circuit. This circuit can be mainly used in scoreboards. Two identical circuits are needed, one is for left and the other is for right. The main heart of this circuit is timer.
This flashing action performs continuously. This circuit uses timer and a decade counter. It can be used as doorbell. With some modifications, it can be used to produce different sounds. Read this post for complete details. This saves the power consumption and is low cost. This circuit can be used in the museums to protect the valuable things.
TV Remote Control Jammer : This proposed TV jammer circuit confuses the infrared receiver in a TV by producing the constant signal that interferes the remote control signal.
If you switch on the circuit once, the TV will not receive any command from the remote. This allows you to watch your own program without anyone changing the channel or volume. Super Sensitive Intruder Alarm : This circuit is designed to alert the user when an intruder enters into the home.
If there is any obstacle in front of IR sensor, it generates an interrupt signal. This interrupt signal is given to the speaker to alert the user. Using this remote, we can control the appliances within the range of meters. It is used for remote control applications like burglar alarm, car door alarm, calling bell, security systems, etc.
High and Low Voltage Cutoff with Delay and Alarm : This high and low voltage cutoff with delay alarm circuit is an advanced automatic voltage stabilizer circuit and is used to protect our home appliances. This solar charger has current and voltage regulation and also has over voltage cut off facilities. This circuit may also be used to charge any battery at constant voltage because output voltage is adjustable.
Car Battery Charger Circuit : This article aims to describe the principle of operation, design and working of a simple car battery charger from AC mains supply and a feedback control section to control the battery charging.
Fire Alarm with Siren Sound : This circuit alerts us when there is a fire accident at home by ringing a siren sound instead of a buzzer. You may also get detailed information about pin diagram and internal block diagram of NE timer. Intelligent Unambiguous Night Lamp Switcher : This is the circuit diagram of unambiguous night lamp switch, which turns ON our domestic lights automatically when it is dark, without human interference.
It also avoids repeated frequent switching of the devices which is usually ignored in most similar circuits but may have a detrimental effect on our operating devices. Automatic Railway Gate Controller with High Speed Alerting System : The main aim of this project is to operate and control the unmanned railway gate in the proper manner in order to avoid the accidents in the unmanned railway crossing.
This circuit can be used for decoration purpose or can be used for a signaling purpose and many more. This circuit is mainly used in the occasions, decoration articles or in visual indication sign boards etc. In this project, we use bi-color LEDs for sequential running light. Thermistor Temperature Sensing Alarm : This circuit is a temperature sensing as well as alarm circuit. The circuit raises an alarm whenever the temperature crosses a certain limit. Pull Pin Security Alarm System : This circuit helps us to get alerted when anybody picks our pockets or bags.
The circuit is very helpful to prevent our goods getting pick pocketed.
Auto Turnoff Soldering Iron Circuit : This circuit helps the soldering iron to turn off automatically when it detects overheating and thereby avoids it from getting damaged. This can be used as a calling bell to call your assistant.
SCR can be used in half wave rectifier, full wave rectifier, inverter circuits, power control circuits, etc. FM Bugger Circuit : Here is small circuit with which you can listen to another people conversation from long distance using the normal FM radio set.
This FM bugger circuit is kept in room where you want listen the conversation. You can listen to this conversation using the normal FM radio set. Battery Powered Portable Light : This circuit is more helpful in handling unexpected and undesired darkness in our homes or offices. It provides considerable amount of brightness required to do our daily tasks.
IR Remote Control Switch : By using this circuit, we can control any house hold appliance with the help of remote. Receiving section will be in a stable position which is connected to any load and transmitter will act as a normal remote.
It can be used in industries and surveillance systems. Human Detection Robot using Microcontroller : The main principle of the circuit is to detect the human using human detection sensor. The wireless robot is operated manually using PC. The wireless technology used here is Radio Frequency technology. The data is transmitted to receiver through RF. Remote Password Operated Electronic Home Appliances : This circuit explains you how to control the electrical appliances using an Android device.
Here, Bluetooth module is interfaced to microcontroller. This Bluetooth receives the commands from the Android application device using wireless communication. Metal Detector Robotic Vehicle : Land mines buried under the ground causes threat to the lives and affect the economy of the nation. Detection and removing of these mines manually is a dangerous task. So, we use a metal detection robot which works on RF technology.
Water Level Alarm Using Timer : This is a simple and low cost hardware project using a timer circuit. The aim of this project is to design a water level detecting alarm with simple and low cost hardware without compromising on the performance of the device. Sun Tracking Solar Panel : This article describes about circuit that rotates solar panel. For the charging of your mobile phone, this circuit provides you a regulated voltage of 4.
Security Alarm Circuit : This circuit helps you to guard your precious documents as well as jewellery from intruders or theft. All you need is to just place this circuit in front of the locker or below the mat so when any unknown person come and walk over the switch, the circuit will trigger and sound of alarm comes. The most popular option is to use clear plastic storage boxes for storing parts. Breadboard Breadboards are an essential tool for prototyping and building temporary circuits.
These boards contain holes for inserting wire and components. Because of their temporary nature, they allow you to create circuits without soldering.
The holes in a breadboard are connected in rows both horizontally and vertically as shown below. Check out this post for more info on how to use a multimeter. Test Leads Alligator Clips Test leads are great for connecting components together to test a circuit without the need for soldering.
Wire Cutter Wire cutters are essential for stripping stranded and solid copper wire. The advantage of these over normal screwdrivers is the precision tips of each driver. These are very handy when working with electronics that contain tiny screws. Helping 3rd Hand When working with electronics, it seems you never have enough hands to hold everything. This is where the helping hand 3rd hand comes in. Great for holding circuit boards or wire when soldering or tinning.
Heat shrink has been called the duct tape of electronics and comes in handy in a wide variety of applications.
Jumper Wire These wires are used with breadboard and development boards and are generally AWG solid core wire. Jumper wires can have male or female ends depending on how they need to be used.
To do this, a soldering iron is the tool you would use. You can choose leaded or lead-free solder in a few diameters. Electronic Components Now its time to talk about the different components that make your electronic projects come to life. Below is a quick breakdown of the most common components and functions they perform.
Switch Switches can come in many forms such as pushbutton, rocker, momentary and others. Their basic function is to interrupt electric current by turning a circuit on or off. Resistor Resistors are used to resist the flow of current or to control the voltage in a circuit.