What Is A Resistor Value?

Is it OK to use a higher wattage resistor?

Yes, you can use it.

It will give you an ability to source in more current.

To avoid the size of the resistor getting large due to high wattage, you can use SMD resistor.

This will not only save space on your PCB but your PCB will look descent as compared to the through hole resistor of same power rating..

Can I use a higher ohm resistor?

2 Answers. The cases where using a higher value resistor will damage a circuit exist, but are a bit less usual than the cases where it may simply produce a weaker result than desired, or a different frequency response than desired.

What does R mean in resistors?

resistance of resistorI = current through resistor in amps (A) R = resistance of resistor in ohms ( ) V = voltage across resistor in volts (V)

What does a resistor limit?

In short: Resistors limit the flow of electrons, reducing current. Voltage comes about by the potential energy difference across the resistor. The mathematical answer is that a resistor is a two-terminal electric device which obeys, or you could say enforces, Ohm’s law: V=IR.

How do you find the value of a resistor?

To calculate the resistance value, you need to group the values of the significant digits bands — i.e., the values of the first two or three bands from the left, depending on the total number of bands. Then you need to multiply that value by the multiplier to get the resistance value of the resistor.

What are the most common resistor values?

Most values i use are > 100 ohms and < 470 k. ohms ¼ and ½ Watt.

What is a resistor used for?

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

How do you know if a resistor is bad?

Pick out a random resistor and set the multimeter to the 20kΩ setting. Then hold the probes against the resistor legs with the same amount of pressure you when pressing a key on a keyboard. The meter will read one of three things, 0.00, 1, or the actual resistor value.

What is the purpose of the 10 ohm resistor?

This is supposed to help clean up the supply for the analog circuitry by removing the high frequency pulses from the Digital supply. A sneaky trick is to replace the 10ohm resistor with a ferrite bead. They come in a variety of surface mount packages and are about 30ohms as well as being very good at attenuating rf.

What are the 4 types of resistors?

Different Types of Resistors – Fixed, Variable, Linear & Non-Linear Resistors & ApplicationsCarbon Composition Resistors.Wire wound Resistors.Thin Film Resistors.Carbon Film Resistors.Metal Film Resistors.Thick Film Resistors.Metal Oxide Resistors.Cermet Oxide Resistors (Network Resistors)More items…

What resistor do I need for LED?

Basics: Picking Resistors for LEDsPower Supply VoltageLED ColorResistor (calculated)4.5 VRed, Yellow, or Yellow-Green36 Ω4.5 VBlue, Green, White, or UV48 Ω5 VBlue, Green, White, or UV68 Ω5 VRed, Yellow, or Yellow-Green128 Ω4 more rows•Aug 29, 2012