The Most Common Passive Electrical Components

An electronic circuit typically consists of at least one active component and any number of passive components. An active component has the ability to control the flow of electrons through it. For example, a transistor uses a voltage signal on one pin to allow or block an electrical current through the two other pins. Passive electronic component list cannot control the flow of current, though they prevent it, resist it, or store it. Here are the two most common passive electrical components.

The Diode

The diode is an extremely common and important passive electrical component. They are also among the most basic semiconductor component. An LED is simply a diode that emits light when the voltage is high enough. The primary goal of any diode is to allow for current to flow only one way.

You may notice that most diodes are black with a silver stripe at one and. Current should enter the blank end and flow out the end with the silver stripe. This means that the voltage at the back end needs to be higher than the voltage at the end with the stripe.

Engineers love to envision components under ideal circumstances. An ideal diode allows current to move freely from the anode(back) to the cathode(end with the stripe) without any resistance. There would thus be no voltage drop across the diode when operating in an ideal scenario. And when operated backward the resistance would be infinite allowing for absolutely no current flow.

The Resistor

A resistor is a special passive component that is designed to have a very specific amount of resistance. As you likely already know, a voltage difference on two ends of something with resistance is what creates a current. Hence, resistors are used to control voltage drops as well as the amount of current in a circuit.

The two most common types of resistors are fixed resistors and variable resistors. Chances are, you’ve interacted with a variable resistor within the past week. Many radios and televisions have knobs. Those knobs are often variable resistors with caps. When turning the knob you are adjusting the resistance and altering the signal.

The Fundamentals Of The Circuit

The resistor and the diode are fundamental components in most circuits. They are often used together to ensure specific current flow reaches the necessary active components. A resistor, diode, and an active component like a transistor can create an extremely basic, but functioning, electronic circuit. Also you can visit the website to find the best Directics – electronics components list.