The LEDs should be in 2 or more groups that each pulse at AC speed but offset by a fraction of the wavelength, that way there is little to no flicker. Or convert to DC and power it that way.
That's WAY too complicated. Just run the power through a high-frequency tank oscillator to convert from 60Hz to a much higher frequency with just a coil and capacitor.
Or, do what I did. Just make the rectifier directly out of LEDs itself - https://www.youtube.com/watch?v=jDnCHyF7o5U And from there you can power your devices with the leftover DC power.
LEDs are seriously far more robust than they were a decade ago.
Yes, there is "leftover DC power" as a diode only allows power in one direction and whatever is left after the LED voltage drop is rectified DC. If I put 12V of LED on a 120V leg, I'll have 108VDC rectified left over after the LEDs take their voltage drop. If no other device uses that power, it just gets dumped out to ground, but it's still unused DC power.
That's not PWM in the video. That's raw mains frequency.
What's the frequency of the 12V AC supply in that video? Is it the same as 110V AC going into the transformer? What is causing the lights to pulse every few seconds?
Yup, same 60hz power mains, it's a simple 10:1 step-down transformer with a resistor and filter cap wall-wart. My camera is recording at 29.97 FPS so you get to watch essentially which sets of diodes on the rectifier are operating on the waveform peak/trough (or would actually see which ones had I had this on an o-scope.) The weird star-trek transporter effect is just the intensity of the lights screwing with the camera + the progressive-scan nature of the camera sensor.
Here's one directly on the mains power. NO CONTROL CIRCUITRY.
You don't want to power LEDs with DC if you want the highest light output. This is because the junction heats up and lowers the efficiency of light output. When LEDs are pulsed at a high enough rate, the junction temperature can stay lower at higher currents. This leads to higher light output.
No privacy/security/adblocking user should use Chrome; it's a browser made the company you block ads from and tracks you whether or not the ads are there. Use Firefox, Safari, open source chromium, MS Edge, or anything else, just not Chrome.
Also a Safari extension would be very nice.
I've never had a stuck pixel on any of the macs I've had but my iPhone 7 has 2 pixels stuck on. If like to see if Apple will fix/replace even though it is nearly unnoticeable unless looking at pure black with the brightness high.
https://github.com/hephaest0s/usbkill
Checks for changes with USB drives and shuts down the computer and optionally deletes files and wipes ram. USB stick on a wristband > unplugs when they take the computer > shuts down
The most important part of this article was a mention of connecting national grids. If we had a global grid, the section of earth with enough sunlight could power the rest of the world. And hence no need for non-renewable energy.
Lol
That's funny
At least whitelisting S3 is probably fine
I was QAing for a company. They had a link in an email go through a tracker as opposed to loading the tracker on another site. Obviously uBlock blocked it and confused me for a few minutes until I realized what it was blocking.
They didn't like my suggestion to have the tracker be loaded externally so if it was blocked, no big deal.
Basically ads that exploit you without you clicking on them. I don't know if it was on the acceptable ads list and you had a old copy of adobe acrobat, then you would be hacked. They didn't mention what sites but users in Central Europe got it on popular websites. Sites you'd probably trust.
Other than static ads between the hosting site and the site that wants to advertise without a middleman ad network, I don't trust any ads. In the case listed previously, a human is more likely to review the ad, making it safer.
Since I care about not getting hacked, the obvious conclusion for me is to block all ads.
I had social anxiety. Got counseling around 3-4 years ago. Even though I was never formally diagnosed, my mother always thought I was somewhere on the Autism spectrum. Not enough to really hinder me at everything, but enough to make me socially incapable.
I've never taken an IQ test but I think I would score fairly high.
I've had a similar experience with the dumbing down in classrooms. (Probably many times before this but I have a memory that is totally shit at some things but great at others) So I'm taking a beginner programming class at college in python. About half way though the semester I finished the class barely working hard. I could have done in 2-4 weeks had I went through it as fast as possible. There was another session that was a bit faster but I was the first to finish by far. Some of the things other people struggled with kinda amazed me. Things I would do in 30 minutes to an hour they might take 3 plus days including the professor really helping them. Any time I tried to help, I quickly got frustrated since I wasn't going to tell them how exactly to do it.
Also I taught myself nearly all the course material.
This was at an engineering/art/business private college (which only had a comp sci minor) which I'm transferring away from to do computer programming.
Used to work for a company bug testing their app. We used a service called installr which worked on both devices. On iOS you installed a certificate/profile and on android, it downloaded an apk which then got installed manually. 100% of the time it was easier and quicker on iOS. And this was downloaded from the internet, not a mac.
