Circuit kolla Blog

 The Capacitor Figure 1 : Two capacitors (Non-polarized on left and polarized on right) You can think of a capacitor as a battery with very low capacity. You can charge and discharge it, just like a battery. The capacitor is often used to introduce a time-delay in a circuit. For example to blink a light (check out the example in the Integrated Circuit section). But it’s also useful for removing noise in an audio signal, or make the power supply of a circuit more stable. Capacitors come as polarized and non-polarized capacitors. The biggest difference is that with the polarized capacitor, you have a positive and a negative pin and you need to make sure to connect them correctly. You can connect non-polarized capacitors any way you want. So which one to choose? You never need your capacitor to be polarized. But for larger values, the capacitors are made with a material that makes them polarized. So, sometimes you don't have any choice but to use a polarized one. Figure 2 : Three diff

 The Switch Figure 1 : The push-button is a popular switch The switch is a component that connects one pin to another. For current to flow through a circuit, there needs to be a path from the plus of the battery to the minus of the battery. If you build a simple circuit with an LED and a resistor and connect this to a battery, your LED will light up. If you disconnect the plus of the battery from the circuit, the LED turns off.  The switch is nothing more than a way to connect and disconnect two or more things. For example to make a light-switch. Or a keyboard. Figure 2 : The switch symbol comes in many forms. This is the push button switch. Example   In Figure 3, you can see how you can use a switch to turn on and off an LED. Figure 3 : In this circuit, the switch turns on the LED when pushed down  

 The Resistor Figur1 : The resistor in a circuit I didn’t understand the resistor in the beginning. It seemed like it didn’t do anything! It was just there, consuming power. But eventually, I learned that the resistor is extremely useful. You’ll see resistors everywhere. And as the name suggests, they resist the current. But you are probably wondering: “What do I use it for?” You use the resistor to control the voltages and the currents in your circuit. Figure 2 : You always need a resistor with the LED Let’s say you have a 9V battery and you want to turn on an LED. If you connect the battery directly to the LED, LOTS of currents will flow through the LED! Much more than the LED can handle. So the LED will become very hot and burn out after a short amount of time. But – if you put a resistor in series with the LED, you can control how much current is going through the LED. Figure 3 : A rectangle or a zigzag line is used as a symbol for the resistor   Example In Figure 4 you can see a c

 Light-Emitting Diode (LED) Figure 1 : A Light-Emitting Diode (LED) A Light Emitting Diode – or LED for short – is a small component that lights up when current flows through it. Sometimes you use it for simple tasks like indicating that your circuit has power, that the circuit is working or that the circuit has failed. But you can also combine several LEDs to create simple 7-segment displays that can display numbers or use them to make cool light decorations. If you combine enough LEDs in a square, you can even use them to show images. The LED exist in many different colors ; Red, green, blue and many more. There is also a special type of LED called RGB. This is an LED where a red, green and blue LED has been combined into one package. The colors mix, so by controlling the intensity of each of the three colors you can create a wide spectrum of different colors. Figure 2 : The symbol used in circuit diagrams for a Light-Emitting Diode (LED) Example To use an LED, you need to connect it

#Basic Electronic Components Used in Circuits These are the most common components:     Resistors     Capacitors     LED s     Transistors     Inductors     Integrated Circuits   Resistor -Resistor- I didn’t understand the resistor in the beginning. It didn’t seem to do anything! It was just there, consuming power. But with time, I learned that the resistor is extremely useful. You’ll see resistors everywhere. And as the name suggests, they resist the current. But you are probably wondering: What do I use it for? You use the resistor to control the voltages and the currents in your circuit. How? By using Ohm’s law. Let’s say you have a 9V battery and you want to turn on a Light-Emitting Diode (LED). If you connect the battery directly to the LED, Lots of currents will flow through the LED! Much more than the LED can handle. So the LED will become very hot and burn out after a short amount of time. But – if you put a resistor in series with the LED, you can control how much current is g

💕 # welcome home page  basic electronics for all