lemming741 @ lemming741 @lemmy.world

Posts

5

Comments

621

Joined

2 yr. ago

How do you prove that your ad campaign is working?

That's the neat part- you don't!

https://freakonomics.com/podcast/does-advertising-actually-work-part-2-digital-ep-441/

Pretty sure openmediavault uses it, but that's the only one I've seen

https://news.ycombinator.com/item?id=40726974

It depends where you measure. If you measure across the inductor, it absolutely goes negative.

The frequency is generally fixed, the duty cycle will vary.

A variable speed drive can be fed with DC. Is the output AC or DC? I know you need a three phase AC motor to wire up to it.

Is audio DC? It doesn't have a fixed frequency. Amplifiers pulse DC and then remove or 'block' the DC offset so speakers see AC.

It seems like people in this thread have a very strict definition of AC being a 60Hz sine wave, and everything else must be DC.

Is a square wave not AC? Current is flowing in and out of an inductor 100k times a second.

Could that 100khz square wave excite a transformer and produce usable current on the secondary? Absolutely it could, and that's how a bigger SMPS works.

If you're looking for a "pure DC to pure DC" converter, that's called a linear regulator and it's wildly inefficient. They work by varying the conductance of a transistor but are useful for low currents. The extra voltage is converted to heat.

buy dc to dc power converter

look inside

ac

And that's your problem? Do you hold $AAPL

tl;dr: photoshop is hard

The same counterargument used in every debate about this

I saw they may have had too many windows open

https://uk.news.yahoo.com/bayesian-yacht-theories-how-sank-111421612.html

You're not in traffic, you are traffic

Ultimately, arguing that you don't care about the right to privacy because you have nothing to hide is no different than saying you don't care about free speech because you have nothing to say.

Edward Snowden

I think apple does it so you can tell which model someone has and how much poorer they are than you.

I have a 2018 OLED, and the ratio of comments by guests about thinness vs picture quality is 3:1.

this message sponsored by your local chiropractor

It's the only way to stand out in the store.

I remember reading that wild animals just eat the best cherries, it has nothing to do with the digestion. The caged animals are just making shit beans.

https://consumer.ftc.gov/consumer-alerts/2024/08/how-avoid-getting-burned-solar-or-clean-energy-scams

Unfortunately, some of those things do happen.

The bigger scam is the massive negative externalities of petroleum consumption but that's an abstract concept and these people are simple farmers. These are people of the land. The common clay of the new West. You know...

Men's minor leagues all pay shit salary too and for the same reasons. Teams and leagues fold all the time.

Hockey, football, baseball, soccer- unless you're at the top you make about as much as you would at Costco.