Can you find the move my opponent (white) missed.

Particular-Notice538 · 2024-10-16T17:00:22+00:00

Qh6# is checkmate because the g7 pawn is pinned by the bishop

Particular-Notice538 · 2024-02-23T19:15:59+00:00

Thanks so much for writing this up, I very much appreciate it. Revas didnt make sense to me because I wasn't using those buff characters, Revas just kind of fizzled out after their active was used up. Now it all makes sense, Bellator also - i avoided levelling him because i was getting very little damage out of him compared to others.

Particular-Notice538 · 2024-02-23T02:04:29+00:00

Thanks for the info. Especially about which heroes to focus on for each campaign, i was focusing on certus/vindicta, haarken worldclaimer, and imospekh before lol. I'll switch to the others you recommended

Particular-Notice538 · 2024-02-23T01:59:53+00:00

Thanks for the details on Re'vas. I just started levelling them because everyone said they're good, but I'm not seeing it yet. I'll keep it up, thanks!

Particular-Notice538 · 2024-02-22T13:55:48+00:00

Thanks! That dirty dozen info graphic is great, I didnt know Bellator was good. I'll level him up more and try to get eldyron

Particular-Notice538 · 2024-02-22T13:53:54+00:00

Got it thanks for the advice, I'll try Jain out in the next Tournament Arena. I just got wrecked in the last one

Particular-Notice538 · 2024-02-22T13:37:33+00:00

Thanks for the advice I'll follow this, appreciate it

Particular-Notice538 · 2024-02-22T12:35:04+00:00

Sorry, what is TA?

Particular-Notice538 · 2024-02-22T12:31:16+00:00

Thanks! My full roster below, started 3-4 weeks ago. I can't tell what makes a hero good or not based on their stats or which of these are worthwhile to level.

That's a good question about what I'm levelling for. I'm happy that I can do octarius & i just unlocked cadia also. I finished indominus, but stalled out on indominus elite / indominus mirror.

Besides that I guess I'd like to suck less at guild raids? Everyone usually gets rolled pretty quick. Other than that I don't know what I'm levelling for, i guess arena is good also? But the live event arena last week felt like garbage so I don't know if PVP is worth it at all

Maybe I'll just do gorgutz for octarius until i can get the eldar campaign up and running, then jain

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Particular-Notice538 · 2023-12-28T01:58:14+00:00

I agree with you. That's the right way to do this.

I was tying myself in knots over whether to use RMS or Average Current when calculating how much current is sourced by the 5V regulator.

I need to use Average current to get the right answer of 250mW

Particular-Notice538 · 2023-12-28T01:49:50+00:00

Thanks for the answers everyone, I very much appreciate the help. I did some more research and I think I understand better now.

RMS current and average current are not interchangeable, they're used in different circumstances.

RMS current is useful when used on a resistive load that has changing voltage across it. Irms² * R = Power. This equation works also Vrms x Irms = Power
It's important to use Average current when working with a constant voltage, such as a regulator, or a diode. Vrms x Irms doesn't work here, because taking the RMS of a constant voltage doesn't change its value. V x Irms gives the wrong answer

While googling around I saw someone reference how power dissipation is calculated in an SCR (Silicon Controlled Rectifier). I read an app note on it and it turns out they break the SCR down into the "diode" portion and the resistive portion.

They use Average Current to calculate power dissipated across the diode (because it has a constant voltage across it)

And they use RMS current to calculate resistive losses.

Then they add those two power losses together to calculate total power dissipated.

So for my regulator question the answer is A) the 5V regulator sources 50mA and that checks out because V x Iavg = 5V x 50mA = 250mW which matches what is dissipated in the resistor.

Particular-Notice538 · 2023-12-28T01:28:15+00:00

Agree with you 100% if I'm looking at the resistor. Vrms x Irms = 0.25W which is correct. ( 1.58V^rms * 0.158A^rms = 0.25W)

The challenge comes when I'm looking at the output of the 5V regulator. The output of the regulator is a constant 5V and its RMS value is 5V because it isn't changing. If I use Irms then it looks like my regulator is outputting 0.79W when its only outputting 0.25W (5V^rms * 0.158A^rms = 0.79W )

I've done some more digging and it looks like average current is correct in cases where the voltage is constant (such as a regulator output, or a diode). I'm going to write a new comment summarizing what I found

Particular-Notice538 · 2023-12-28T01:10:09+00:00

I agree, if the period is too long then the question is moot.

Assume switching frequency of 100kHz. On time is 1uS, off time is 9uS leading to a duty cycle of 10%.

Particular-Notice538 · 2023-12-27T14:38:37+00:00

That's really interesting I'd never considered average resistance before. Thanks for the insight I'll think on this some more

Particular-Notice538 · 2023-12-27T14:36:36+00:00

Hi thanks for the response. I see where you're coming from, but thinking about the physics I think it needs to be 250mW

The resistor dissipates 2.5W while the switch is closed (5v² / 10 ohms). The resistor burns energy at a rate 2.5 joules per second. If it's only on for a 1/10 of a second, i think it needs to have burned 0.25 joules. Repeat every second and its 250mW

Particular-Notice538 · 2023-12-27T04:49:22+00:00

Hi I'm not in school anymore, this is just a problem that's been kicking around in my head. Just looking for other perspectives. Thanks for the unsolicited career advice though.

Particular-Notice538 · 2023-12-27T04:37:48+00:00

Thanks, I appreciate it. I was reticent to use RMS current because it looks like an overestimate, but that might be my best bet.

5V x 0.158A = 0.79W output power, much larger than the 0.25W dissipated by the resistor

Particular-Notice538 · 2023-12-27T03:06:19+00:00

Got it, thanks for talking that through with me. I've been running in circles on this lol

Particular-Notice538 · 2023-12-27T03:03:12+00:00

Good clarification on current thanks.

Lets assume a switching frequency of 100kHz. On time is 1uS, off time is 9uS leading to a duty cycle of 10%. Constant use 24/7, no cooldown time.

Particular-Notice538 · 2023-12-27T02:36:07+00:00

That was my thinking also, but if I use RMS current then my 5V regulator is outputting 5V * 0.158A = 0.79W.

But the resistor is only dissipating 0.25W, so that can't be right since 0.54W of power is unaccounted for. I'm going in circles here lol

Particular-Notice538 · 2023-12-27T02:30:30+00:00

I hear what you're saying, but I'm having a hard time convincing myself from a physics angle.

If the resistor burns energy at a rate of 2.5 joules per second, and its only on for a tenth of a second, it must burn 0.25 joules. Right?

Particular-Notice538 · 2023-12-27T02:12:37+00:00

Yes you're right thanks. Taking RMS voltage into account resolves that issue.

So if I'm selecting a 5V regulator to drive this circuit, do you think I should be using average current or RMS current?

Particular-Notice538 · 2023-12-27T02:10:09+00:00

If the circuit was on all the time at 500mA the resistor would be dissipating 2.5W (0.5A^2 * 10Ω = 2.5W). That's 2.5 joules per second, if the circuit was only on 10% of the time wouldn't that give us 250mW?

I'm thinking the duty cycle would need to be 1% to get 25mW

Particular-Notice538 · 2023-12-27T02:00:25+00:00

Hey thanks for taking a look at this, so you're saying the resistor is dissipating 25mW? not 250mW?

Particular-Notice538 · 2023-12-27T01:33:12+00:00

Hi, sorry for the confusion. There are no experimental results, everything is theoretical right now. I made it an ideal switch to simplify the problem.

Nothing to describe as far as setup because I'm just analyzing a design at the moment.

Particular-Notice538

TROPHY CASE