/sci/ - Science & Math

>>10677030
Resistance is futile.

sometimes it's necessary and good circuits will minimize their use

this is more obvious if you look into how radios and wireless receivers work, in which resistors are used to manipulate baud rates so shit like the internet can work.

I fucking hate barrel resistors. Someone needs to make AR glasses for colorblind people to be able to read these.

>>10677137
https://itunes.apple.com/us/app/rezistr/id1295949400?mt=8

https://play.google.com/store/apps/details?id=com.mhdev.resistorscanner&hl=en_US

>>10677174
That's bretty cool

>>10677030
How do you remember the color code? Post your, possibly politically incorrect, color code ditty. Here's mine:
Black Bears Raid Our Yellow Green Bins Violently Grabbing Whatever Goodies Smell Nice

>>10677030
doesn'If you think it's not efficient then don't use it at all! Take out every resistor from all your devices!

>>10677030
If you think it's not efficient then don't use them!
Take out every resistor from all your device!

>>10677309
Black boys rape our young girls but Violet goes willingly.

>>10677030

Thermodynamics:

First: You can't win.
Second: You can't break even.
Third: You can't quit the game.

>>10677506
Kek

>>10677506
This

>>10677506
Yep. Although after women got involved. It was reworked to Bad Booze Rots Our Young Guts But Vodka Goes Well. As I recall from the late 70's.

>>10677045
wise guy huh?

>>10677030
Beats having all your wires melt

>>10677030
If you wanted "efficient" you'd use impedence matching.

>>10677506

>>10677506
i'll remember this forever now because it is a truth of nature .

>>10677608
>>10677615
>>10678040
>>10678148
What was it?

>>10678155
furry faggot gave a very humorous mnemonic for remembering the resistor color code

>>10677030
Under a constant voltage source (which is 99% of the time what you're dealing with) increasing resistance decreases power consumption: P = V^2/R.

>>10677515
Question about your analogy about the 3rd law, i don't see the analogy, can please explain?

>>10677030
56kΩ

>>10677309
better be right or your great big plan goes wrong

>>10677030
In most cases the loss is very minimal. For example a 10k pullup resistor on a TTL open drain: 0.0025 Watts; and only when the output is low.

>>10678286
That's the absolute zero law isn't it?

>>10677309
I don't, I search it online if I need too because ny professors werent boomers.

>>10677030
we use it to divide up voltage and current

>>10679033
While this is true OP is talking more about that it wastes energy due to heating up due to resistance.

>>10678155

>>10677030
Wait a second.
Youre telling me youre retarded?

>>10679126
Ha awesome

>>10677309

When I was in highschool, my woodshop teacher taught me "Black Boys Rape Our Young Girls, But Violet Goes Willingly"

>>10677030

Resistors dissipate energy as heat, but if you had any circuit with low resistance it would be close to a short. So, resistance actually is good when it comes to efficiency.

If something is high resistance it actually means it's going to draw less current and therefore run on less power.

>>10677030
what is actually puzzling about resistors is why the fuck cant they write down the resistance using actual numbers instead of the LGBT rainbow because there is more than enough space on a resistor to do that, and these are a pain to read

>>10678172
This

>>10679637
Because it's cheaper to produce them that way and they were produced in the past before we had number engraving tech at that scale. Meaning new ones need to be compatible with the old ones so we never changed.

>>10677174
This is cool as fuck

>>10677030
Your other options are bias all your circuits with current mirrors which doesn't actually get around your problem since the voltage that you would just be dropping across a resistor is just getting dropped across the collector-emitter junction (or drain-source) instead. Same power loss. Or you create massively complex power supplies that supply only exact voltages and currents to each part of the circuit to achieve maximum efficiency... but not really because your power supply will end up being ridiculously inefficient now.

>>10677174
This is fucking genius.

>>10677309
Just remember black=0, brown=1 and then it's a RainboW starting on Red and White is last.

would it be possible to build a computation circuit with only transistors? So no energy is wasted in resistance