hatsunearu

81 ms·

901.
by hatsunearu 11y ago
Heck, some scopes cripple their memory capacity which can be unlocked with a software upgrade. Curiously, Rigol, a test equipment company, recently updated their dirt cheap line (DS1052E to DS1054Z). The DS1052E had a notoriously weak softw
902.
by hatsunearu 11y ago
"We the NSA have prevented N terrorist attacks last month thanks to our surveillance program." Pretty compelling argument for them to be not making, IMHO.
903.
by hatsunearu 11y ago
Can anything twart "Large Terror Attacks"? Is there really a socioeconomical measure that can twart a determined attacker?
904.
by hatsunearu 11y ago
Vendor lock-out. And also because I saw Dave Jones do a teardown of one of these things. He tried turning it on with no SIM and it said "please insert SIM" instead of booting to Android.
905.
by hatsunearu 11y ago
"unobscured"? transistor level schematics are kind of unreadable at this scale. It's a better idea to represent them as blocks or at least at the gate level and notate the specifics like timing and such.
906.
by hatsunearu 11y ago
Pretty sure these devices don't work unless you use the correct carrier's SIM card--like, they refuse to boot.
907.
by hatsunearu 11y ago
Wouldn't it accidentally serve malicious builds to unsuspecting non-botnet users?
908.
by hatsunearu 11y ago
This is huge, considering how simple the circuitry is. Based on the prototyping process, they have gone for an expensive impedance analysis DSP chip with 0.1Hz resolution and a relatively wide frequency range. If this gets adopted by a majo
909.
by hatsunearu 11y ago
https://en.wikipedia.org/wiki/Speck_%28cipher%29 Speck's pretty nice and tiny, but who knows if it's backdoored or not :)
910.
by hatsunearu 11y ago
Little bit of context: The "Transistor Man" was I believe first introduced in The Art of Electronics (great book btw, the third edition just came out). An extremely simple model of a bipolar junction transistor in the linear regio
911.
by hatsunearu 11y ago
A better "instrument" would have been LED(s). Real power, more blinky blinky. You could even attach a ultra lower power microcontroller dev board to it[1] and show the less technical audience "look! computer powered by spooky
912.
by hatsunearu 11y ago
I didn't mean inefficiency, I meant that not all of the energy can be delivered to the projectile because the delivery is rate-limited because of electric properties. Also, there is inefficiencies in play, such as the melting aluminum
913.
by hatsunearu 11y ago
Capacitors have really bad energy per volume figures. People underestimate how much energy chemical stuff has--gasoline, batteries, etc.
914.
by hatsunearu 11y ago
That graphite trick sounds pretty spiffy, thanks!
915.
by hatsunearu 11y ago
It's probably 27kJ measured by the stored charge in the capacitor... which probably aren't delivered to the fullest extent. You can see the wires jump--that's inductive magic in action. To get any sort of quick magnetic pulse
916.
by hatsunearu 11y ago
Regardless of whether or not this test is bunk or not, this person's website has a lot of cool audio samples: Subwoofer Harmonic Distortion test: http://www.audiocheck.net/testtones_subwooferharmonicdistort... Polarity
917.
by hatsunearu 11y ago
Old thread, but I thought I made it clear that I wasn't talking about data compression, but rather dynamic range compression.
918.
by hatsunearu 11y ago
The single worst thing that harms audio quality is excessive compression. It's ruining everything, I'd say. Heck, I'm sure everyone who knows their worth would agree that compression harms audio quality. Recommended reading:
919.
by hatsunearu 11y ago
I'm surprised that HeLa has a binomial name: Helacyton gartleri.
920.
by hatsunearu 11y ago
Is Shrekli's Twitter account really his? It seems way too insane to be real.
921.
by hatsunearu 11y ago
http://www.eevblog.com/forum/projects/the-ubeam-faq/ Here's an extremely in-depth analysis of this new snake oil.
922.
Modified Newtonian Dynamics (MOND): An alternative hypothesis to Dark Matter(en.wikipedia.org)
1 points by hatsunearu 11y ago|0 comments
923.
by hatsunearu 11y ago
Powering a relatively low impedance device like headphones at relatively high powers with an unbuffered op-amp causes distortion. The CMoy is a classic example of "bad" electronics design.
924.
by hatsunearu 11y ago
Well I use a trackball and an external keyboard so it doesn't really matter. My personal laptops don't have force touch trackpads so it's a non-issue for me.
925.
by hatsunearu 11y ago
I personally find the force touch trackpad really spooky. It clicks in when I exert force, which is fine, and if I reduce the force without moving my finger, it clicks out, which is also fine. When I click and drag across the trackpad, the
926.
by hatsunearu 11y ago
This is huge because it has potential (hah) to become an ultra high speed photodetector, which have numerous uses in the industry. Conventional photodetectors are essentially transparent photodiodes, and you have to pass a constant current
927.
by hatsunearu 11y ago
Yup. I think it's not that hard to understand the continuous time fourier transform -- just imagine every signal ever can be expressed as an infinite integral of sinusoids of varying frequencies (the inverse fourier transform), and rev