Posts by Olin Lathrop
Since you seem to be asking about whole batteries, not individual bare cells, dangerous effects should be limited. Consumer batteries made from lithium cells almost always include integrated prote...
I don't know about "best practices", but I make all my own library parts. I use Eagle, and the library parts that come with Eagle are quite inconsistent in things like pad shapes, what is shown on...
how much higher can i go in current ripple RMS None, of course, at least if you want to rely on anything else the datasheet says. The heating is a function of the RMS current. No, you don't get ...
At first this sounded like it might be a classic case of forgetting the flyback catch diode across the relay coil. However, now that you've posted a schematic we can see that a diode is built into...
Thanks for asking. In my view, if it's something you'd first think of asking an electrician, it's probably off topic here. That includes what type of cable to use, whether it should be in a condu...
First, let's redraw your schematic so that it's not so annoying to look at. High voltages go at top, low voltages at bottom, and logical flow left to right: This is not a great soft-start circu...
The thermal noise of a resistance depends only on that resistance. However, there is always some parasitic capacitance. That capacitance against the resistance causes a low pass filter. So in a ...
It seems you want to protect a device against power spikes. The power supply is nominally 12 V, but can have spikes up to 79 V with an impedance of 500 mΩ. Two timing values were given, but they ...
the original question is interesting and deserves a technical answer So go write one. That's your call, just like it's mine not to. We are all volunteers here, and are therefore never obligated ...
When measuring signals at different points on the skin of the body, you don't usually want to connect the victim patient to ground. Usually you use an extra electrode connected some distance away ...
Safety of medical devices is not something you should be asking random folks on the internet about. The rules are stringent, for good reason. The clearance and creepage distances to line voltage,...
I agree with this approach. Categories should only be created when they are expected to have reasonable traffic. A category with only chirping crickets is an anti-advertisement. Take a look at t...
I have a similar problem when debugging firmware on a dsPIC that drives a flyback power supply. The switch isn't designed to be on for very long, as eventually the inductor saturates. Usually the...
Adding to what Lundin said (+1): s is seconds, S is siemens (1/Ω). What we write here is inherently HTML. Greek characters like µ and Ω are defined as HTML entities, and can always be writte...
The two ICs you reference don't do the same thing. The first sentence of the first datasheet says: The MAX16141/MAX16141A ideal diode controllers provide system protection against a variety of sy...
What you basically ask for can be done (I've done it), but not all your specific constraints can be reasonably met. The way to measure transmission line impedance is to drive a step onto the trans...
I'll let someone else answer about the device physics. I'll answer from an electrical engineering standpoint. The answer is: Maybe, but it doesn't matter since you should be considering worst cas...
is the "X" point floating when there is no 12V applied ? Perhaps over a limited range, depending on whether the 12V line is left open or connected to something other than 12V. Case 1: The volt...
The first circuit uses the FET in follower mode. That means it works as an impedance buffer with a gain a little below 1. Such configuration can be useful to turn a high impedance signal into a l...
I would not do deliberate ground pours on a board like that. It's relatively small, and not exceptionally high frequency. I also wouldn't try to guess what effect or not it might have on the boar...
It looks like you've sort of re-discovered a motivation for Fourier analysis. The difference between looking at slope versus frequency content is exactly the difference between time domain and fre...
Yes, votes on meta should not factor into rep. Meta downvotes indicate disagreement, not that you're a terrible person, have the IQ of a garden slug, and cast dispersions on your heritage like the...
What you are asking for is totally unrealistic, and your numbers don't add up. With 10 mH and 80 µF, the resonant frequency is 178 Hz. Getting down to 1 Hz even with 10 mH would require over 2.5 ...
I don't have any special knowledge about how submarines get controlled, so this is mostly speculation. I expect that the actual controls are fine. There seem to be the necessary degrees of freedo...
Starting with your first circuit: It seems a little klunky, but should work. I don't like the D1 and D2 diodes. The reason I placed D1 is to avoid triggering the mosfet with very low voltage li...
