How do you read a standard resistor value?
Standard resistors have four color bands. Three of the bands tell you the nominal value, which means the value the resistor was designed to have. The fourth band tells you the tolerance of the resistor, which indicates how far off the nominal value the actual resistance could be.
What is Decade value?
One decade (symbol dec) is a unit for measuring ratios on a logarithmic scale, with one decade corresponding to a ratio of 10 between two numbers.
What is the standard resistance?
Standard resistors are very high precision resistors used as a reference to calibrate or verify the accuracy of other resistors in industry or establishments, on lines or production equipment. these are also used to check the accuracy of resistance meters by most manufacturers.
What is the preferred resistor value?
Preferred Values or E-series The series looks as follows: 1– 1.2 – 1.5 – 1.8 – 2.2 – 2.7 – 3.3 – 3.9 – 4.7 – 5.6 – 6.8 – 8.2 – 10 etc. All of these values can be powers of ten (1.2 – 12 – 120, etc.). E192 0.5% (also used for resistors with 0.25% and 0.1%).
What is the minimum value of resistor?
The lowest possible value is 423 K. The total range of possible resistances is almost 100K. The fourth resistor’s nominal value is 680 K. Performing the same process with tolerances, we find that the highest possible value is 714 K while the lowest possible value is 646 K.
What are the values of resistor?
Resistor Markings
| Value | 1st Band | Multiplier x |
|---|---|---|
| 180 ohms | Brown | Brown |
| 3,900 ohms | Orange | Red |
| 47,000 ohms (47k) | Yellow | Orange |
| 1,000,000 ohms (1M) | Brown | Green |
How do you use a decade resistor?
Each decade is a string of the the same value resistor. A rotary switch is used to select the point in the string that corresponds to the desired value. Each rotary switch has 10 positions, from 0 to 9….Resistors.
| Supply Voltage | R that draws 1/4W | Current Through R at 1/4W |
|---|---|---|
| 12V | 576 Ω | 20 mA |
| 30V (+/- 15V supply) | 3600 Ω | 8 mA |
What is dB decade?
It is usual to measure roll-off as a function of logarithmic frequency; consequently, the units of roll-off are either decibels per decade (dB/decade), where a decade is a tenfold increase in frequency, or decibels per octave (dB/8ve), where an octave is a twofold increase in frequency. …
What preferred value?
The E series is a system of preferred numbers (also called preferred values) derived for use in electronic components. It consists of the E3, E6, E12, E24, E48, E96 and E192 series, where the number after the ‘E’ designates the quantity of value “steps” in each series.
What is the minimum value of a 220 ohm resistor with a 10 tolerance?
Tolerance Band For example: A 220 Ω resistor has a silver tolerance band. Tolerance = value of resistor x value of tolerance band = 220 Ω x 10% = 22 Ω
What is the maximum tolerance of the resistor?
Resistance tolerance shows the maximum allowable difference from the nominal resistance value. Most of the resistors Bourns offers are ±1 % and ±5 % tolerance. Precision thin film resistors have a very low tolerance down to ±0.01 %.
What are the most common resistor values?
They are the standard E3, E6, E12, E24, E48 and E96 resistor values. The E3 series resistors are the most widely used and hence these values will be the most common resistor values used within the electronics industry.
Which is the standard value for 1% resistors?
standard value decade for 1% resistors ohms* 10.0 14.7 21.5 31.6 46.4 68.1 10.2 15.0 22.1 32.4 47.5 69.8 10.5 15.4 22.6 33.2 48.7 71.5 10.7 15.8 23.2 34.0 49.9 73.2 11.0 16.2 23.7 34.8 51.1 75.0 11.3 16.5 24.3 35.7 52.3 76.8
What’s the maximum voltage for a decade resistor?
Maximum Voltages of 5000 V or 10,000 V. For 2000 V, consider the standard HRRS Series For Calibration of Meggers and Sourcing out Precision High Resistance.
What’s the tolerance for a 355 kΩ resistor?
As the chart at the right shows (created in Excel), plotting the values on a logarithmic scale results in a straight line due to the exponential in the equation. Example: Calculations indicate the need for a 355 kΩ resistor and a tolerance of 1%.
What’s the tolerance range for an E24 resistor?
E24 series have tolerance range of ±5%. E48 series have tolerance range of ±2%. E96 series have tolerance range of ±1%. E192 series have tolerance range of ≤±0.5%. Please click on below image to get excel sheet having Standard Resistor Values table.
