4 Band Resistor Calculator

July 09, 2024 Post a Comment

4 band resistor calculator

The first band gives us the first digit of our resistor. The second band gives us the second value

What is the tolerance of a 4 band resistor?

4-Band Resistors For a 1K5 or 1500 Ω resistor with a tolerance of ±5%, the bands will be brown, green, red and gold. In this case, the value of the resistance can vary by ±75 ohms.

How do you read a 4 color resistor?

The first two bands represent the digits or significant figures the third band indicates the

How do you calculate a 5 band resistor?

Let's take an example of a 5-band resistor with the colors given in the above image (brown, green, red, black and gold). So according to the formula the resistance will be: 152 * 1 = 152 Ohms with 5% tolerance.

What size resistor do I need calculator?

Resistor = (Battery Voltage – LED voltage) / desired LED current. So assuming a 12-volt power source and a white LED with the desired current of 10 mA; The formula becomes Resistor = (12-3.4)/. 010 which is 860 ohms.

What is the current through 4 resistor?

Final Step : The current flowing through the 4Ω resistor is 1 A.

What is the purpose of the 4 th band on the resistor?

The 4-band resistor color code is the most commonly used resistor. Similar to the 3 band resistor, the first two bands always give the first 2 digits of the resistance value. The third band represents the multiplier while the fourth band represents tolerance.

What does 5% tolerance mean on a resistor?

Tolerance Band Tolerance is the percentage of error in the resistor's resistance, or how much more or less you can expect a resistor's actual measured resistance to be from its stated resistance. A gold tolerance band is 5% tolerance, silver is 10%, and no band at all would mean a 20% tolerance.

What resistors do I need for LEDs?

LEDs typically require 10 to 20mA, the datasheet for the LED will detail this along with the forward voltage drop. For example an ultra bright blue LED with a 9V battery has a forward voltage of 3.2V and typical current of 20mA. So the resistor needs to be 290 ohms or as close as is available.

Can we use 4 band resistor instead of 5 band?

Yes, you can of course substitute a 4 band for a 5 band resistor, and vice versa, as long as the values of its resistance, voltage and tolerance match the needs of the circuit and you're willing to pay the price hike for high-precision resistors.

How do you read a 4 band resistor with a 5 band resistor?

The 4 color bands on the left side are grouped together to represent the resistance value of a resistor and the 5th color band on the right side indicates the tolerance of the resistor. The 1st color band indicates the 1st significant value or 1st digit of the resistors value.

How do you calculate a resistor?

To calculate the total overall resistance of a number of resistors connected in this way you add up the individual resistances. This is done using the following formula: Rtotal = R1 + R2 +R3 and so on. Example: To calculate the total resistance for these three resistors in series.

What happens if you use the wrong resistor?

Power Dissipated by Resistor - What Can Go Wrong The power rating indicates how much power that resistor can safely dissipate when installed in a circuit. If you exceed the power rating of a resistor, it may get extremely hot. If you continue to increase the current, the power dissipated will also increase.

Can resistors be too big?

For a simple LED circuit there are no bad consequences of using a resistor of higher power. On the other hand, some type of high speed communication system may not like the increased capacitance to ground of a large resistor or, the increased series inductance.

How do you choose the right resistor in a circuit?

A resistor of at least twice the calculated power dissipation must be selected. If it is a power application, the resistor of at least three or four times the calculated power dissipation must be selected.

What color is a 4 ohm resistor?

Color	Value
Red	2
Orange	3
Yellow	4
Green	5

What is the current in the 4 ohm resistor when switch?

2A. Was this answer helpful?

What is the current of 4 ohm and 2 ohm resistor?

Answer. therefore, I = V/R = 6/4 = 1.5A which is total current.

How is color code resistance calculated?

Calculating Resistor Colour Code Values For example, a resistor has the following coloured markings; Yellow Violet Red = 4 7 2 = 4 7 x 102 = 4700Ω or 4k7 Ohm. The fourth and fifth bands are used to determine the percentage tolerance of the resistor.

What is 22K resistor?

22K Ohm 2W High Quality Carbon Film Resistor (CFR) with ±5% Tolerance and Tin Plated Copper Leads. 22K Ohm Resistor Color Code: Red, Red, Orange, Golden. Resistance: 22K Ohm, Power Rating: 2 Watts, Approximate Maximum Current: 9.54mA.