Posts by Olin Lathrop
with just one mode Others have already explained that "discrete" means a finite set of values, not just two. This is to point out that having just one "mode" (it seems you mean symbol) doesn't ma...
I have decided to try design a band-pass filter with a cut-off frequency of 10kHz and bandwidth of 2 Hz. It's "10 kHz", not "10kHz". There needs to be a space between the number and the unit. ...
Your question doesn't make a lot of sense. for a sinusoidal input signal s = jω the pole exists at the resonant frequency ωr. Actually the pole exists regardless of what the input signal is. The...
There are a number of misconceptions here. bode plot db/Hz First, it's "dB", not "db". Second that's not a Bode plot. Those are dB/Log(Hz). In other words, a certain frequency ratio results in...
We have such low volume as it is, that I wouldn't want to see another category added at this time. It would only emphasize how little traffic there is. Let's not make the same mistake that Photog...
This can be OK if you consider and address the consequences carefully. It's something I would only do as a last resort. Usually I try to make sure the hole itself is outside the outline of the pa...
I agree that "208VAC" and "230VAC" are too specific to be useful. I tried to edit the post to remove them. There is apparently a bug in the system. While I removed both tags from the post, one o...
How does the receiver understand the end bits? It doesn't. The purpose of stop bits (what you seem to be calling "end bits") is to leave a guaranteed gap before the next start bit. The leading e...
I think "dangerous" is pretty clear. It's when doing as recommended can cause significant damage to property or health. For example, recommending to a hobbyist to make a direct line-connected cap...
I don't think there is a formal term that means exactly what you describe. Switching transients generally means short term glitches that might cause noise, usually resulting from power being switc...
That's a marketing blurb. Look at the real datasheet. I just checked a polyfuse datasheet, and see that there is usually only about a 2.5 to 3.0 ratio of trip current to hold current. That shoul...
The circuit you show doesn't make any sense: Start by examining the steady state condition. In steady state, C1 is effectively an open, so you ignore it. R4 keeps Q1 on. That means the collec...
For reference, here is your circuit properly drawn with component designators: The question is what happens when the inductor current starts at 0, then the switch is closed. The first observati...
Ripple doesn't need to be that high. I've done flyback supplies to power isolated sections quite a bit, using a pulse on demand scheme like yours. It's not hard to get the ripple down to ±50 mV. ...
I dont understand how to make a logic circuit which does that job:check if the divisors is greater and equal or less than the most left digits of the divident So think about it. Break it down int...
Take a look at the circuit and try to see what function it will perform on the input signals to yield the output signal. For simplicity, let's consider the diode ideal, R1 and R2 the same, and R3 ...
I just happened to re-read this question, and I now think I see better what Microchip was trying to say here: On closer examination, I think this is actually correct but badly worded. I believe...
You need to be more careful. First, you should have been able to see for yourself that the first equation isn't written right. I'll assume the whole "-0.5t" is the exponent of e. You were too sl...
At first glance, R22, C22, and C23 look like a compensation network around the TL431. However, this doesn't make much sense because the TL431 is being run open loop. Rfbt and Rfbb divide down the...
It sounds like you are doing the measurements right. However, I expect the problem is in the space around the antenna. At 434 MHz, the wavelength is 690 mm or 27 inches. Everything out to about ...
First, let's clarify something: replacing a diode with a MOSFET switch I have never seen the diode actually replaced. The intent is to have the FET on only when the diode would conduct, but no s...
Here is a copy of your specs to make them easier to discuss here: None of those specs really tell you what the V/Hz of the generator inside that motor is. We could take a reasonable guess at if...
The video helped explain a few things, but it's still not clear what the overall purpose of this device is. You showed it clearly producing a signal, but the documentation you quote talks about an...
The turntable is apparently run by a cheap synchronous motor. There is a type of motor that's easy to manufacture, that turns synchronously with the line frequency. You say the table used to rota...
In addition to what Andy said (+1), the 350 mA AC figure is probably limited by power dissipation, and therefore temperature. It applies during normal forward operation where the secondary current...