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All about 1K resistor, how much do you know about it?

All about 1K resistor

Resistor is generally directly called resistance in daily life. It is a current-limiting element. After the resistor is connected in the circuit, the resistance value of the resistor is fixed, usually two pins. It can limit the current through the branch it is connected to. The resistance that cannot be changed is called fixed resistor. The variable resistance is called potentiometer or variable resistor.

The resistance 1k Ω is equal to 1000 Ω. The definition of ohm is that when the voltage at both ends of a circuit is 1V and the current passing through is 1A, the resistance of this circuit is 1 Ω.This article will introduce about 1K resistor from different aspects.

What is 1k resistor?

1k resistor—”k” stands for 1,000 and “kilo” is the prefix—is a resistor. Since a 1k resistor has an ohmic value of 1,000, we will encode the number 1,000.

1K resistor is the one of the most used resistors in electronics. The 1k resistor colour code may be used to quickly determine the resistance value and tolerance of a 1k resistor.What is 1k resistor?

What is 1K resistors used for?

The resistor has two jobs to do.
1) It is a resistor that pulls down.
2) A voltage divider contains it. This makes it possible to adjust the threshold voltage to the appropriate level.

You may choose the resistor values, for instance, so that the transistor won’t come on until, let’s say, 120 Volts are present at the circuit input. You may choose almost any voltage greater than Vbe.This enables you to strengthen your resistance to erroneous or weak signals.Keep in mind that the threshold voltage is susceptible to both variations in temperature and differences across devices. Nevertheless, it is a crucial component of design.

Where is 1K resistor used for?

These 1K ohm resistors function well as pull-up, pull-down, and current limiters and are often used in breadboards and other prototype applications.Where is 1K resistor used for?
Pull-up resistors are also used in electronic logic circuits. Additionally, they may be used at the intersection of two different types of logic devices, perhaps ones with different power supply voltages. A pull-up resistor weakly “pulls” the voltage of the other components on the line while they are not in use.

1k ohm resistance is widely used in automobiles, household appliances, earphones and other electronic devices. There are many parts of the car that use electricity, such as the light bulb, buzzer, buzzer alarm, etc. They all need to use 1k ohm resistance to ensure their operation effect. 1k ohm resistance is often used in electronic devices such as home appliances and earphones. For example, the control circuit of TV, air conditioner, DVD, etc. requires 1k ohm resistance to reduce voltage and set current intensity.

How do you test a 1k resistor?

The red and black probes on the multimeter should be connected to the proper connectors. The black probe should be connected to the multimeter’s “COM” terminal, and the red probe should be connected to the terminal marked with the resistance symbol (ohm). The multimeter’s dial should be adjusted to the resistance setting and then turn off the circuit containing the resistance you want to test.

Any capacitors in the circuit will be discharged if the leads of a spare, high-wattage resistor are connected to those capacitors. Continue to jump the leads for a few seconds to totally discharge any accumulated power.Each resistor lead should be connected to a multimeter probe.Touch the probes to the area where the lead is soldered to the circuit if the leads are not readily accessible.

You may attach either probe to either lead of a resistor without changing your reading since resistors are not directional components (electricity flows freely in both directions across the component). it says on the display. A reliable resistor ought to test within its specified range. Either infinite resistance or a reading significantly greater than the specified resistance are signs of a faulty resistor. The resistor is no longer operating correctly in any scenario.

What can be used instead of 1k resistor?

Switch out the resistor with a wire. That indicates almost minimal resistance and much increased current flow in the nearby components. Even though I can’t see any parts that an overcurrent may harm, I might still try it as a last resort.

Fuse in lieu of the resistor. The correct current (230 V at 15–16 A) may be calculated and soldered. This is a better choice since, even if it fails, I will still be able to rescue other parts. When only one resistor is now blown, blowing the chip is the last thing I want to do.

Can I use 1K ohm resistor for LED?

The LED’s current is controlled by the resistor. According to Ohm, resistance equals voltage / current, or to put it another way, voltage equals resistance. Indicator LEDs are frequently specified at 20 mA (70% of the 15,000 LEDs available from Digikey are). They will operate at a lower current but still light dimly.

Let’s say you have a 20 mA LED and decide to go with that amount of current since you also want to see it light up on a bright sunny day. 1K should be adequate. As an alternative, connecting three 100 ohm resistors in series will result in 300 ohms, which is nearly identical to 270 ohms. However, either approach is OK if all you want to do is watch the LED turn on or off.

What color is a 1k resistor?

The resistor colour codes Brown-Black-Red-Gold or Brown-Black-Black-Brown-Gold can be used to identify a 1K Ohm resistor.

List of 1k resistor manufacturers in the world

List of 1k resistor manufacturers in the world
James Electronics
Jameco ValuePro

FAQ about 1k resistor

Most frequent questions and answers

It relies on the source’s voltage and other components in the circuit. The 1K resistor will lower the entire voltage if it is the lone element in the finished circuit. In other words, the resistor will drop 9V if the supply is 9V. The resistor will decrease 18V if the supply is 18V, and so on. A straightforward solution wouldn’t work in a more complicated circuit where voltage is distributed among several components.

To determine the resistance value of such resistors, we must understand the colour coding. We will learn how to read a 1k ohm resistor’s colour coding for the 3, 4, 5, and 6 bands on this lesson page. We must first understand the code for each colour.

An attribute of a substance used to describe the opposition to current flow is called resistance (R). The flow of electrons or current through a substance decreases with increasing resistance it provides.One frequent figure is “K,” which stands for 1,000 ohms. Therefore, it is also possible to refer to a resistor with a value of 7000 ohms as having a value of 7K.



The terminal voltage and current have a definite functional relationship, and the two-terminal device that reflects the ability to convert electric energy into other forms is represented by the letter R, with the unit of ohm Ω. Actual devices such as bulbs, heating wires, resistors, etc. can be represented as resistor elements.

I hope this article can help you understand more about 1K resistance. For more information, please visit our website.Besides, contact us IBE if you need a one-stop PCBA manufacturer.



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