Difference between revisions of "Resistors"
Line 2: | Line 2: | ||
[[Image:Resistors.jpg|thumb|Examples of resistors.]] | [[Image:Resistors.jpg|thumb|Examples of resistors.]] | ||
== Identification == | == Identification == | ||
− | Resistors' values are shown on the resistor in a | + | Resistors' values are shown on the resistor, coded in a series of colored bands. |
+ | |||
+ | The resistors in labs here in Pratt are almost all 5% resistors or 1% resistors. That is, their actual values are either are guaranteed to be within 5% or 1% of the nominal, or labeled value. | ||
+ | |||
+ | The 5% resistors have three bands showing their value: two significant figures, and then the number of zeros. | ||
+ | |||
+ | The 1% resistors have four bands showing their value: three significant figures, and then the number of zeros. | ||
+ | |||
+ | |||
+ | |||
+ | {| class="wikitable" | ||
+ | !Color!!1<sup>st</sup> band!!2<sup>nd</sup> band!!3<sup>rd</sup> band (multiplier)!!4<sup>th</sup> band (tolerance) | ||
+ | |- style="background:black; color:white" | ||
+ | | <font color=white>Black</font> ||0||0||×10<sup>0</sup>|| | ||
+ | |- style="background:#654321; color:white" | ||
+ | |<font color=white>Brown</font> ||1||1||×10<sup>1</sup> ||±1% (F) | ||
+ | |- style="background:#e02410; color:black" | ||
+ | |<font color=black>Red</font> ||2||2||×10<sup>2</sup> ||±2% (G) | ||
+ | |- bgcolor = "#FF7F00" | ||
+ | |Orange ||3||3||×10<sup>3</sup> || | ||
+ | |- bgcolor = "#FFFF00" | ||
+ | |Yellow ||4||4||×10<sup>4</sup> || | ||
+ | |- bgcolor = "#228b22" | ||
+ | |Green ||5||5||×10<sup>5</sup> ||±0.5% (D) | ||
+ | |- style="background:#0000CD; color:white" | ||
+ | |Blue ||6||6||×10<sup>6</sup> ||±0.25% (C) | ||
+ | |- style="background:#9400D3; color:white" | ||
+ | |Violet ||7||7||×10<sup>7</sup> ||±0.1% (B) | ||
+ | |- style="background:#808080; color:white" | ||
+ | |Gray ||8||8||×10<sup>8</sup> ||±0.05% (A) | ||
+ | |- bgcolor = "#FFFFFF" | ||
+ | |White ||9||9||×10<sup>9</sup> || | ||
+ | |- bgcolor = "#D4AF37" | ||
+ | |Gold || || ||×10<sup>-1</sup>||±5% (J) | ||
+ | |- bgcolor = "#C0C0C0" | ||
+ | |Silver || || ||×10<sup>-2</sup>||±10% (K) | ||
+ | |- | ||
+ | |None || || || ||±20% (M) | ||
+ | |} | ||
Line 35: | Line 73: | ||
|} | |} | ||
− | 5% | + | 5% Resistor Standard Values |
− | {| | + | {|class="wikitable" |
|- | |- | ||
− | 10 ||11 ||12 ||13 ||15 ||16 ||18 ||20 ||22 ||24 ||27 ||30 | + | |10 ||11 ||12 ||13 ||15 ||16 ||18 ||20 ||22 ||24 ||27 ||30 |
|- | |- | ||
− | 33 ||36 ||39 ||43 ||47 ||51 ||56 ||62 ||68 ||75 ||82 ||91 | + | |33 ||36 ||39 ||43 ||47 ||51 ||56 ||62 ||68 ||75 ||82 ||91 |
|} | |} | ||
+ | 1% Resistor Standard Values | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |100 || 102|| 105|| 107|| 110 || 113|| 115|| 118 | ||
+ | |- | ||
+ | |121 || 124 || 127 || 130|| 133 || 137|| 140 || 143 | ||
+ | |- | ||
+ | |147 || 150|| 154|| 158 || 162 || 165 || 169 || 174 | ||
+ | |- | ||
+ | |178 || 182 || 187 || 191|| 196 || 200 || 205|| 210 | ||
+ | |- | ||
+ | |215|| 221|| 226|| 232 || 237 || 243 || 249 || 255 | ||
+ | |- | ||
+ | |261 || 267 || 274 || 280 || 287|| 294 || 301 || 309 | ||
+ | |- | ||
+ | |316 || 324|| 332 || 340 || 348 || 357 || 365|| 374 | ||
+ | |- | ||
+ | |383 || 392|| 402|| 412 || 422 || 432|| 442|| 453 | ||
+ | |- | ||
+ | |464|| 475 || 487|| 499|| 511|| 523|| 536 || 549 | ||
+ | |- | ||
+ | |562|| 576 || 590 || 604 || 619|| 634 || 649|| 665 | ||
+ | |- | ||
+ | |681|| 698|| 715 || 732 || 750|| 768 || 787|| 806 | ||
+ | |- | ||
+ | |825|| 845|| 866|| 887 || 909|| 931 || 953 || 976 | ||
+ | |} | ||
== Use == | == Use == | ||
Revision as of 21:34, 16 February 2009
Resistors are passive electronic components.
Identification
Resistors' values are shown on the resistor, coded in a series of colored bands.
The resistors in labs here in Pratt are almost all 5% resistors or 1% resistors. That is, their actual values are either are guaranteed to be within 5% or 1% of the nominal, or labeled value.
The 5% resistors have three bands showing their value: two significant figures, and then the number of zeros.
The 1% resistors have four bands showing their value: three significant figures, and then the number of zeros.
Color | 1st band | 2nd band | 3rd band (multiplier) | 4th band (tolerance) |
---|---|---|---|---|
Black | 0 | 0 | ×100 | |
Brown | 1 | 1 | ×101 | ±1% (F) |
Red | 2 | 2 | ×102 | ±2% (G) |
Orange | 3 | 3 | ×103 | |
Yellow | 4 | 4 | ×104 | |
Green | 5 | 5 | ×105 | ±0.5% (D) |
Blue | 6 | 6 | ×106 | ±0.25% (C) |
Violet | 7 | 7 | ×107 | ±0.1% (B) |
Gray | 8 | 8 | ×108 | ±0.05% (A) |
White | 9 | 9 | ×109 | |
Gold | ×10-1 | ±5% (J) | ||
Silver | ×10-2 | ±10% (K) | ||
None | ±20% (M) |
Color | 1st band | 2nd band | 3rd band (multiplier) | 4th band (tolerance) | Temp. Coefficient |
---|---|---|---|---|---|
Black | 0 | 0 | ×100 | ||
Brown | 1 | 1 | ×101 | ±1% (F) | 100 ppm |
Red | 2 | 2 | ×102 | ±2% (G) | 50 ppm |
Orange | 3 | 3 | ×103 | 15 ppm | |
Yellow | 4 | 4 | ×104 | 25 ppm | |
Green | 5 | 5 | ×105 | ±0.5% (D) | |
Blue | 6 | 6 | ×106 | ±0.25% (C) | |
Violet | 7 | 7 | ×107 | ±0.1% (B) | |
Gray | 8 | 8 | ×108 | ±0.05% (A) | |
White | 9 | 9 | ×109 | ||
Gold | ×10-1 | ±5% (J) | |||
Silver | ×10-2 | ±10% (K) | |||
None | ±20% (M) |
5% Resistor Standard Values
10 | 11 | 12 | 13 | 15 | 16 | 18 | 20 | 22 | 24 | 27 | 30 |
33 | 36 | 39 | 43 | 47 | 51 | 56 | 62 | 68 | 75 | 82 | 91 |
1% Resistor Standard Values
100 | 102 | 105 | 107 | 110 | 113 | 115 | 118 |
121 | 124 | 127 | 130 | 133 | 137 | 140 | 143 |
147 | 150 | 154 | 158 | 162 | 165 | 169 | 174 |
178 | 182 | 187 | 191 | 196 | 200 | 205 | 210 |
215 | 221 | 226 | 232 | 237 | 243 | 249 | 255 |
261 | 267 | 274 | 280 | 287 | 294 | 301 | 309 |
316 | 324 | 332 | 340 | 348 | 357 | 365 | 374 |
383 | 392 | 402 | 412 | 422 | 432 | 442 | 453 |
464 | 475 | 487 | 499 | 511 | 523 | 536 | 549 |
562 | 576 | 590 | 604 | 619 | 634 | 649 | 665 |
681 | 698 | 715 | 732 | 750 | 768 | 787 | 806 |
825 | 845 | 866 | 887 | 909 | 931 | 953 | 976 |
Use
Questions
Post your questions by editing the discussion page of this article. Edit the page, then scroll to the bottom and add a question by putting in the characters *{{Q}}, followed by your question and finally your signature (with four tildes, i.e. ~~~~). Using the {{Q}} will automatically put the page in the category of pages with questions - other editors hoping to help out can then go to that category page to see where the questions are. See the page for Template:Q for details and examples.