"ABC hits harder than XYZ set at the same voltage..."

[Rocketman]

PWM is a great method of controller power (watts).
With a Duty cycle of less than 100% (DC) the output power will be less than straight DC.
That limits the performance of a single cell PWM to something less than a straight through device.

Now with two cells stacked, the PWM being less than straight through isn't a problem.
Unless 7.4v ain't enough for you

I don't have an ABC PWM device, but from all accounts it seems to be a pretty hard hitting mod.
Most Buck regulating devices seem to be limited to about 6 volts on the high end and 2.5 to 3 amps.
Getting 7 volts (about 90% Duty Cycle) and 5 amps (35 watts) is pretty easy to do with a double stack of good 18650 cells.

I mean like really easy.
But until the aliens give us new science, the ABC PWM mod hits harder because RMS measuring circuits ain't simple.

 

[Rocketman]

Heck, I'm still trying to figure out why My Square Root button Doesn't work with Negitive Numbers?

You have the battery in wrong

 

[Wishdog]

Imagine........

Best post in the thread. And no one will understand why.

Edited to add a hint: i

 

[zoiDman]

A physicist, an engineer, and a statistician were out game hunting. The engineer spied a bear in the distance, so they got a little closer. "Let me take the first shot!" said the engineer, who missed the bear by three metres to the left. "You're incompetent! Let me try" insisted the physicist, who then proceeded to miss by three metres to the right. "Ooh, we got him!!" said the statistician.

A man was crossing a road one day when a frog called out to him and said: "If you kiss me, I'll turn into a beautiful princess". He bent over, picked up the frog and put it in his pocket.

The frog spoke up again and said: "If you kiss me and turn me back into a beautiful princess, I will stay with you for one week."

The man took the frog out of his pocket, smiled at it and returned it to the pocket.

The frog then cried out: "If you kiss me and turn me back into a princess, I'll stay with you and do anything you want". Again the man took the frog out, smiled at it and put it back into his pocket.

Finally, the frog asked: "What is the matter ? I've told you I'm a beautiful princess, that I'll stay with you for a week and do anything you want. Why won't you kiss me ?"

The man said, "Look I'm a Engineer. I don't have time for a girlfriend, but a talking frog is cool."

 

[Rocketman]

I'm tell'n ya... I looked it up. See? Equivalent DC voltage of a PWM signal

I stand corrected
Since it's on the interweb, it must be correct

 

[Wishdog]

The man said, "Look I'm a Engineer. I don't have time for a girlfriend, but a talking frog is cool."

He needs to work for the govt like I do.

 

[zoiDman]

You have the battery in wrong

They take Batteries?

 

[AttyPops]

Yeah, but talking frogs ARE cool.

This discussion is resolved with Rocket's RMS calc, my sleepiness, and the level the discussion has degraded to. Besides, zoiDman's avi is still boiling water so........

Have a good night, or day (or whatever it is where you are).

 

[zoiDman]

Two Engineering students were walking across campus when one said, "Where did you get such a great bike?"

The second Engineer replied, "Well, I was walking along yesterday minding my own business when a beautiful woman rode up on this bike. She threw the bike to the ground, took off all her clothes and said, "Take what you want."

The second Engineer nodded approvingly, "Good choice; the clothes probably wouldn't have fit."

 

[Rocketman]

I'm reading these out loud to the wife.

Seems she likes your jokes

 

[AttyPops]

Well, at least Wishdog gets me. Rocket just insults me. And zoiD....well.....boils.

 

[zoiDman]

Well, at least Wishdog gets me. Rocket just insults me. And zoiD....well.....boils.

I wish I could throw something more Meaningful into this thread but it's just over my head.

 

[Rocketman]

The first post in this thread was really pretty good, until the electric stove analogy came up

and I'm sorry if anyone feels like I insulted them
(not really)

 

[zoiDman]

The first post in this thread was really pretty good, until the electric stove analogy came up

and I'm sorry if anyone feels like I insulted them
(not really)

Well at least they didn't go out of their way to Insult Someone.

 

[Wishdog]

The first post in this thread was really pretty good, until the electric stove analogy came up

We make our own fun.

 

[DC2]

Best post in the thread. And no one will understand why.

Edited to add a hint: i

I certainly understood why, and also thought it was VERY clever.
In fact, my wife and I are having a debate about the concept of imaginary numbers as I type this.

And I have to say, I think she is winning.
She's a lawyer.

 

[Rader2146]

The first post in this thread was really pretty good, until the electric stove analogy came up

and I'm sorry if anyone feels like I insulted them
(not really)

Thanks Rocketman. Thermodynamics just isn't my thing, so it was the best I could come up with.

I didn't start this thread looking for any answers, I don't own an ABC or an XYZ. I just noticed the same comments quite often and it got me thinking. Really I just wanted to see what everyone else thought about it and enjoy a good discussion.

Thanks for shining the light on the missing RMS factor. I have learned something....now my day is complete.

 

[Wishdog]

I certainly understood why, and also thought it was VERY clever.
In fact, my wife and I are having a debate about the concept of imaginary numbers as I type this.

My friend, a CS major, was bored in class once so he designed a device that, when plugged into an electrical outlet in a house, would remove all imaginary numbers from the house's electrical system. If I was an EE, I've have to make one to show to teachers, claiming "Step 1: Plug in imaginary number nullifying device."

(I have no idea how it works or if it really made any sense, but he seemed pleased with himself.)

 

[AttyPops]

I certainly understood why, and also thought it was VERY clever.
In fact, my wife and I are having a debate about the concept of imaginary numbers as I type this.

And I have to say, I think she is winning.
She's a lawyer.

A wife AND a lawyer.... Do you EVER win an argument? Forget that... I withdraw the question.......

 

[Wishdog]

A wife AND a lawyer.... Do you EVER win an argument? Forget that... I withdraw the question.......

My first (useless) degree was in rhetorical theory. You don't want to get into an argument with me. And you wouldn't believe how badly my wife gets when I get out something to write on to take notes on what she's saying so I can prove her wrong better. Epic. It was just the first six or so years of our marriage that we got into arguments, everything's been smooth sailing since then.

And the notes were kinda just an escalation technique. Not as bad as "Will you go look in a mirror and see how angry you are with me?" Man, when I'm in an argument, I turn into a cold-blooded supervillain.