5 ms·
Power increases linearly with frequency and squarely with voltage. Going by the common use of "squarely," the power usage might also be interpreted as being li
by stcredzero 6y ago
Power increases linearly with frequency and squarely with voltage.
Going by the common use of "squarely," the power usage might also be interpreted as being linearly with voltage. Rather, I understood you meant that power increases proportional to the voltage squared.
(For the lurkers: Friction increases proportional to velocity squared, as does kinetic energy. These are all quite useful things to know, and should be part of the takeaways from your basic science education.)
- xxs 6y agoOk - a fair point. "Voltage squared" fits better, indeed. It's a simplification that comes from P = V * V / R.
- whatshisface 6y agoThe word you're looking for is "quadratically."
- stcredzero 6y agoThanks for that! Now I can use parallel -ly suffixes to express that thought, too!
- xxs 6y agoTrue that, but what bothers me is that people may take it 'as 4x times increase' (quad=4, similar to twice, thrice, and so on). This is pretty much what I used to use.
- whatshisface 6y agoThat's called "quadrupling."
- verall 6y agoThat's not right - it comes from the formula of power dissipation in an asic: P=CfV^2 (power equals capactiance times frequency times voltage squared). Clearly we don't turn all the mosfets on every cycle but it's the rough idea.
- xxs 6y agoeh, c'mon; 1/R = 2πfC <- which is exactly the same. I tried to show where the voltage comes from with a well known formula. About turning on/off all fets, it doesn't matter as long as the same ones turn on in specific cycles. They just turn on/off more frequently.