By If you are interested in understanding electronic circuits, one of the best ways to learn about electronics is to build a simple circuit. This simple circuit consists of just three components: a 9 V battery, a light-emitting diode (LED), and a resistor. Not only will you learn something about building circuits, but you can also you this completed circuit to practice using your multimeter. Here is the schematic for this circuit: You can build this circuit on a solderless breadboard. You’ll need the following parts:. Small solderless breadboard.
Simple Circuits. Introduction To turn on a bicycle lamp you flick the switch and the bulb lights up. Flicking the switch completes the circuit inside the lamp.
470 Ω, 1/4 W resistor. Red LED, 5 mm. 9 V battery snap connector. 9 V battery. Short length of jumper wire (1″ or less) Here are the steps for building this circuit:. Connect the battery snap connector.
Insert the red lead in the top bus strip and the black lead in the bottom bus strip. Any hole will do, but it makes sense to connect the battery at the very end of the breadboard. Connect the resistor. Insert one end of the resistor into any hole in the bottom bus strip. Then, pick a row in the nearby terminal strip and insert the other end into a hole in that terminal strip. Connect the LED.
Notice that the leads of the LED aren’t the same length; one lead is shorter than the other. Insert the short lead into a hole in the top bus strip, and then insert the longer lead into a hole in a nearby terminal strip. Insert the LED into the same row as the resistor. Both the LED and the resistor are in row 26. Use the short jumper wire to connect the terminal strips into which you inserted the LED and the resistor.
The jumper wire will hop over the gap that runs down the middle of the breadboard. Connect the battery to the snap connector. The LED will light up. If it doesn’t, double-check your connections to make sure the circuit is assembled correctly. If it still doesn’t light up, try reversing the leads of the LED (you may have inserted it backwards). If that doesn’t work, try a different battery.
Do not connect the LED directly to the battery without a resistor. If you do, the LED will flash brightly, and then it will be dead forever.
Basic electrical circuits use standard symbols for the components in the circuit. Understanding electrical circuits is of great importance nowadays. As we all know that modern life is overwhelmingly dependent on electricity, it is quite important for people to understand simple.
Simple electrical circuits introduction is a good assistant for you to better know electrical circuits. You may try which has built-in to rapidly and correctly draw electrical circuits.
The Definition of Electrical Circuits An electrical circuit is a closed loop of conductive material that allows electrons to flow through continuously without beginning or end. There is continuous electrical current goes from the supply to the load in an electrical circuit. People also say that a complete path, typically through conductors such as wires and through circuit elements, is called an electric circuit. An electrical circuit is an electrical device that provides a path for electrical current to flow. After you get the definition of the electrical circuit, now we are going to show you three simple electrical circuits. Switch Circuit A switch is a device for making and breaking the connection in an electric circuit.
We operate switches for lights, fans, electric hair drier and more many times a day but we seldom try to see the connection made inside the switch circuit. The function of the switch is to connect or complete the circuit going to the load from the supply. It has moving contacts which are normally open. With a switch you can turn the device on or off, therefore, it is a very important component in an electrical circuit. DC Lighting Circuit As you can see from the picture below that the LED lamp uses DC supply battery. The battery is bipolar, one is anode and the other is cathode. Moreover, the anode is positive and the cathode is negative.
Also, the lamp itself has two ends, one positive and the other is negative. Therefore, the anode of the battery is battery is connected to positive terminal of the lamp, meanwhile the cathode of the battery is connected to the negative terminal of the lamp. Once the above connection is complete, the LED lamp will light.
Although it is simple electrical circuit, many people have no idea how to deal with the connection correctly. Thermocouple Circuit If you are looking to build a temperature-sensing device or you need to add sensing capabilities to a large system, you will have to familiarize yourself with thermocouples circuits and understand how to design them. A thermocouple is a device consisting of two dissimilar conductors that contact each other at one or more spots, and it is used to measure temperature. As you can see from the picture below that a thermocouple is made of two wires - iron and constantan, with a voltmeter. If the cold junction temperature is kept constant, then the EMF is proportional to the temperature of the hot junction. Voltmeter will measure the EMF generated and this can be calibrated to measure the temperature. The temperature difference between the hot and cold junction will produce an EMF proportional to it.
Because thermocouple junctions produce such low voltages, it is imperative that wire connections be very clean and tight for accurate and reliable operation. Despite these seemingly restrictive requirements, thermocouples remain one of the most robust and popular methods of industrial temperature measurement in modern use.