I've read some answers about resistors used in MOSFET and found that 1kOhm to 100kOhm is used to take MOSFET off when MCU is powering and a resistor from 10Ohm to 200-500Ohm is placed between gate and signal to keep out oscillation.
I've a question about how much current there is on this two ...
@PlasmaHH You'll have elaborate on that as I'm not up to speed on IRC culture...
@PlasmaHH: By the way, regarding that resistor current direction in LTspice, someone came up with this solution of drawing an arrow on it, but I think it's kludgy.
@RespawnedFluff the whole factoid is "tias: try it and see. Instead of boring us to death with doezens of exceedingly trivial questions, try and see it yourself and get the answer faster than waiting here for it" or similar
@RespawnedFluff don't know how there symbol looks like but yeah, that would sometimes be better. Yet better would be to only temporarily enable that arrow
@RespawnedFluff the fun things with such abbreviations is that no one remembers who coined them, or does not believe anyone claiming so. Just with my sbrm
WTF is this "HHO RC" that jp314 keeps asking about? RC is radio controlled I assume, but what is HHO in this context? Wikipedia only says "HHO are fringe science terms for a 2:1 mixture of oxyhydrogen obtained under certain special conditions; its proponents claim that it has special properties."
Frankly with all the time he spends here, he could easily buy himself one of those $13 HHO RCs and figure it out by himself... TIAS as PlasmaHH would put it.
I think we need special closing category for using other people pre-programmed uC to do what you want... especially when their program wasn't intended for your purpose.
I have a module that outputs 3V, has a 'Common' terminal (GND), and a switch terminal. The latter two can accept a toggle input OR a pulse input, and internally it switches on a light.
I have a touch switch that sends a pulse on two different pins. Normally, it drives a dual coil relay - so a SE...
It is easy to show that the Output and input impedance are in a mathematical relation, but it is not clear to me how that is possible. How is the load positioned at one end of the amplifier able to affect the input impedance which is on the other end of the circuit?
I'm looking to buy a compact gyrotron that has a maximum power output of 100 kW. Are such things commercially produced or are they highly specialized devices that are only made for scientific and military purposes?
@NickAlexeev thats more or less what I tried. however due reasons unknown (probably because that hting is a bit bulky) it was taking off about the same amount of material all over the surface so that the bent is still there. might be more triangle shape now because I am not able to hold it totally straight and it was leaning left/right during the process... the total material that I have to take off in the middle of the bent is almost 1mm ...
I have Wun-Hung-Lo-made class-D amp (ok with a TI chip, but who made the board layout, filters etc.) And I also have 15-years old (read dried caps) SPMS. I put my dream audio system together and it has a lot of chirpy noise. What could possibly be the problem? Lack of upvotes on EE.SE of course.
my current idea is to take something that is a bit heavy and slightly larger than the base plate, attach some 180 sand paper to it, put it loosley on top and make some lever&motor push/pull it a cm or so all the time... and then next morning have a look or so
I keep on searching on amazon and ebay for a 'switchable power supply' but the wrong products come up - I'm looking for the kind you connect to a breadboard and can choose between 3V, 9V, 12V etc. Is there a specific name?
Oddly enough these guys have included a linear regulator (LM317, bottom right) on a class-D amp board. Given that it's SOT223, I suspect it doesn't power the TPA3xxx though... Anyone seen something like this?
@RespawnedFluff A long time ago I have seen this on these class D amps that modulate their input voltage with the sound, roughly, but dont know anymore if its a dedicated 317 or built into something else
Also I find it odd that they marked it LM317K. At least with TI, the LM317K is in DDPAK, the LM317D is in SOT223.
I suspect that the LM317 powers the BLE module... but it's odd they put it in the opposite corner of the board from that. Also, I have no idea what that SGM358 could be doing; first I thought it's a Chinese clone of LM358, of course, but it's actually CMOS rail-to-rail opamp.
There are 10 trillion reviews/news-stories about the force/3D touch sensors in the iPhone 6S. But has anyone tested how accurate/responsive it is in terms of exact pressure/force measurements? I have trouble finding such info in the torrent of sources covering this at a churnalism level.
I see t...
Also, this guy has quite a mission statement in his profile: "Yes, I Am A Highly-Motivated Person In Passion. It was the thing changed me and made me to keep being the best every second in my education. In school, I learned not to studying, but to solve. "
Later: "When I was child, I got lots of underestimations from people around me. However, since that time, I have been proving if they are wrong. "