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Posted: 5/20/2016 11:07:47 AM EDT
make a 1 Watt resistor out of two 0.5w resistors ?
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In parallel.
Each resistor will carry half of the current. Each resistor should be twice the target value. I.e. if you want a 4 ohm resistor parallel two 8 ohm resistors. |
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Quoted: In parallel. Each resistor will carry half of the current. Each resistor should be twice the target value. I.e. if you want a 4 ohm resistor parallel two 8 ohm resistors. View Quote Or you could parallel four .25 watt resistors, just make sure the values of each resistor is four time the target value, i.e. if you want a 4 ohm 1 watt resistor then parallel four 16 ohm .25 watt resistors. |
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No. Resistance will be target, but capability to handle amperage will not, and resistance will only equal target in series.
You could decrease amperage through a single resistor by putting them in parallel, but that effectively lowers parallel resistance to below the lowest single resistor value. Never mind: already covered by Paul! |
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Yes. If placed in series, each resistor should be half the desired value. If in parallel, each should be twice the desired value.
If you place them side-by side, leave a small air gap between them to allow for air flow. If they are not of equal value, one will dissipate more power than the other. |
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In parallel. Each resistor will carry half of the current. Each resistor should be twice the target value. I.e. if you want a 4 ohm resistor parallel two 8 ohm resistors. This is the answer Unless put into a circuit controlling a treadmill. |
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make a 1 Watt resistor out of two 0.5w resistors ? How? View Quote |
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In parallel. Each resistor will carry half of the current. Each resistor should be twice the target value. I.e. if you want a 4 ohm resistor parallel two 8 ohm resistors. /thread |
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No. This is how you burn down houses. You will have target resistance, but not amperage capability. View Quote View All Quotes View All Quotes Quoted:
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make a 1 Watt resistor out of two 0.5w resistors ? How? No. This is how you burn down houses. You will have target resistance, but not amperage capability. |
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make a 1 Watt resistor out of two 0.5w resistors ? How? No. This is how you burn down houses. You will have target resistance, but not amperage capability. Look, if you're running E, I, R numbers, it works out. But E, I, R numbers on a piece of paper don't take into account safety. Will you get target resistance? Yes. Will you get the same amperage handling capability? No. |
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Electrical engineering is fuckin bullshit.
My grandpa would just take a whole shitpile of resisters from TVs at the local dump and sotter em up into a big ball by dribblin lead all over em. And then run bare copper watter pipes from the fuse box to the resisters Never had any problems so fuck you. I decided to reply to this thread the way that most people reply to the structural / construction threads. That misspelled mixture of belligerent stupidity + complete ignorance + annoyed stubbornness. |
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Two 1/2 watt resistors, either series or parallel wired will work. Just need to calculate required resistor values. (hint, 1/2x value if series, 2x value if parallel). View Quote View All Quotes View All Quotes Quoted:
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make a 1 Watt resistor out of two 0.5w resistors ? How? If you don't know the answer, just admit it to yourself and then move on with your life. |
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Correct answer. This is covered in EE101. Source: I have a degree in computer engineering. View Quote View All Quotes View All Quotes Quoted:
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In parallel. Each resistor will carry half of the current. Each resistor should be twice the target value. I.e. if you want a 4 ohm resistor parallel two 8 ohm resistors. Correct answer. This is covered in EE101. Source: I have a degree in computer engineering. This isn't 101 material. This is remedial pre-req material. |
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Oh, and..
Bad boys rape our young girls but violet gives willingly for gold or silver. bold added for the ig'nant. |
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Also make sure there is air space between the two in parallel.
A lot of the rating is about heat dissipation, the other bit is about conductor thickness. Those two parameters are assuming a single resistor in free air for the rating, so calculations need to de-rate them based on density and environment temperature if planning to push exactly 1 W through them. |
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Electrical engineering is fuckin bullshit. My grandpa would just take a whole shitpile of resisters from TVs at the local dump and sotter em up into a big ball by dribblin lead all over em. And then run bare copper watter pipes from the fuse box to the resisters Never had any problems so fuck you. I decided to reply to this thread the way that most people reply to the structural / construction threads. That misspelled mixture of belligerent stupidity + complete ignorance + annoyed stubbornness. You is a elextrical jeanyuss. Be carefull to not let the smoke out of the wires View Quote |
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I can believe that. They are still lost. Conversation now has nothing to do with the OP. View Quote View All Quotes View All Quotes Quoted:
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Do people around here ever take time to read the OP? I can believe that. They are still lost. Conversation now has nothing to do with the OP. What did I miss? |
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This :
if you have 1/2w 1ohm resistors. paralleling them will obtain 1w 1/2ohm resistor, so if you want the resistance back 1ohm, you need another 2 parallelled resistors and put them in series, so in order to get 1w 1ohm resistor, you need 4 of 1/2w 1ohm resistors. --\/\/\/-- = 1/2w, 1 ohm |--\/\/\/--| -| |- = 1w, 1/2 ohm |--\/\/\/--| |--\/\/\/--.--\/\/\/--| -| |- = 1w, 1 ohm |--\/\/\/--.--\/\/\/--| |
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Electrical engineering is fuckin bullshit. My grandpa would just take a whole shitpile of resisters from TVs at the local dump and sotter em up into a big ball by dribblin lead all over em. And then run bare copper watter pipes from the fuse box to the resisters Never had any problems so fuck you. I decided to reply to this thread the way that most people reply to the structural / construction threads. That misspelled mixture of belligerent stupidity + complete ignorance + annoyed stubbornness. View Quote Resistance is futile. |
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