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You need to understand two key points.
1. Battery capacity is computed when the battery is operating within it's designed operating range.
This means that you should not run it outside of it's target operating voltage range. Once you reach the voltage that represents 100% DOD (depth of...
I'd go with an RTC, much more stable. Then you don't have to analyze & compensate for the long-term clock error accumulations, which will cause your delay counters to drift away from 6PM... either longer or shorter. The RTC will be much more accurate over a long period of time (days/weeks/months).
You'll need both pieces of information for the design. In terms of power dissipation, heating is a generally thought of as a cumulative, long-term effect, so average power is useful for that part of the design (switch insertion loss * incident power = power dissipated). When analyzing the...
You can just delete the "J" connectors, unless you plan to use connectors... then they might be ok to keep. Example, keep the two pin J3 connector so you can quickly connect/disconnect the battery pack to your microcontroller circuit (in case you need to remove power quickly because it running...
They are trying to show that transmitting the audio directly with EM waves is not feasible (i.e. driving an antenna directly with 20 Hz -20 kHz signals). Rather, it's easier to build a transmitter & antenna that uses a frequency much higher than the desired signal (audio), and modulate the...
If you get into microcontroller development, a lot of that software/firmware is often written using variants of C/C++ languages, so that would be directly applicable.
One of the key things I learned from my programming classes is that once you learn how to program in one language, others are...
Re: problem with regulator
We need more information about your circuit in order to best help. You should draw a circuit diagram (use Paint, Powerpoint, Visio, any schematic capture tool or simulator...) so we can see all of the circuit device values.
An easy guess is that you're getting too...
Following amit's post, ADS is not a good tool for PCB layout. It's much better suited to circuit analysis and complex simulations. It's a design tool, not a general layout application.
If you are doing complex microwave structures (microstrip transmission lines, couplers, hybrids...
It helps to understand the fundamental building blocks in theory, and how they perform in application. This is why college classes teach you the theory, then have you do lab exercises that are directly related to the same topic. You might want to look into a more project-focused intro to...
Don't forget the hands-on part of electronics. Just like you'd write up a simple function to test out a piece of code, you should also start dabbling with small circuits.
Get a small-medium solderless breadboard to do your prototyping on, a cheap soldering iron (about US$20), some small gauge...
If I understand your intent correctly, simply make two circuits on your schematic. The first circuit will have the LNA all by itself (with a proper signal source and load connected). Circuit two would be a copy-paste of the LNA circuit with your bandpass filter connected, then terminated into...
RMS gives you the time-average value of a signal, so it will result in a single number. You can plot the RMS value, but it will simply be a straight line across your plot.
If you want to smooth the original signal, you'll need to construct a digital filter, run the original signal through the...
RMS is root-mean-square. So you have to square each datapoint, then find the mean (average), then take the square root.
so the matlab code should look something like this:
bow_squared = bow.^2; //squares each term in the vector called 'bow'
mean_bow_squared = mean( bow_squared )...
1) Since you are already using Matlab, use the built-in function, cart2pol.
MathWorks - CART2POL
2) Most handheld scientific calculators have a method to convert coordinates from rectangular to polar form, and back again.
3) If you want to do the trig, the vector magnitude is the length of the...
A filter with a cut-off frequency higher than you clock frequency * 10, or so. In order to have a square wave, you need to retain several of the odd harmonics (squarewave is an odd function, thus consisting of only odd-numbered harmonics... 1st, 3rd, 5th, 7th, etc).
If your fundamental clock...
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