Comment by periblepsis on Equalizer circuit using low pass filter
I now completely and rigorously avoid all three of the methods at bottom. Instead I use cards. V999 Vcc 0 6 followed by V998 Vee 0 -6' (or V998 0 Vee 6', which has also come from me sometimes.) But...
View ArticleComment by periblepsis on Finding the natural frequency from the transfer...
That can't be the usual unitless V/V transfer function. It must be the admittance transfer function of the series circuit current divided by the applied voltage. Otherwise the dimensional analysis just...
View ArticleComment by periblepsis on Why doesn't my capacitor take the pressure off the...
Show more of the circuit. It's incomplete there. My first take would be simply to say that an ideal voltage source across an ideal capacitor and given the Spice ITS step means there's no difference....
View ArticleComment by periblepsis on Seeking Spark Gap or Neon Lamp for FL3100H Flame...
A lot has changed regarding international rules and Kr-85 making it almost impossible to ship these devices, anymore. The quantities of Kr-85 that are required for reliable operation are too high....
View ArticleAnswer by periblepsis for Unused inputs and out puts on 74 series ttl logic...
For multi-emitter TTL inputs (commonly found with 74, 74S, 74LS, and 74ALS, for example), cannot tolerate higher than \$5.5\: \text{V}\$ at their inputs. So the minimum resistor size that is used for...
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Answer by periblepsis for Why doesn't my capacitor take the pressure off the...
I will just toss out a random idea for you to play with, since you are just looking to play a bit. Keeping your PNP transistor (not changing it to NPN) and also keeping the \$1\:\text{V}\$ source as an...
View ArticleComment by periblepsis on differential gain for mismatched \$g_m\$ in...
I don't have the book and therefore I'm not reading it. But \$R_{_\text{SS}}\$, from past reading on my part, is usually meant as a resistance that is taken to be parallel to the ideal current source...
View ArticleComment by periblepsis on Audio Op-Amp Query
The microphone must be an electret with built-in FET or IC amplifier that needs about 500 uA (I've seen up to 1 mA or so) to operate properly. R1 and R2 are there to place the inputs about halfway...
View ArticleComment by periblepsis on FE Question about AM-modulated signal
Andrew, I'm confused. When reading the question, I knew the answer was D without any calculations at all. Just basic theory. Then I read lower down and saw that you included the solution to the...
View ArticleComment by periblepsis on FE Practice Question: How to use the given formula?
The algebra needed to find the square root of a complex number is easy to...
View ArticleComment by periblepsis on My calculations don't agree with LTspice simulation...
For latex here, use \$ instead of $. But $$ works, so explore and see what happens.
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Answer by periblepsis for What is the activation power for a 240 volt dryer...
If you have correctly identified a replacement relay, then I believe the relay operates on 48 VDC. The label shown there "says so" to me: T9AP1D52-48-03.Have a look at this datasheet (on Mouser):And...
View ArticleComment by periblepsis on Caculate the base/ emitter current of PNP transistor
@CÔNGNGUYỄNDUY To be saturated, the emitter must be close to the collector. Suppose so. The base only has access to ground. The collector is at ground. The emitter is very near ground. There cannot be...
View ArticleComment by periblepsis on Triggering a small black powder charge with an STM32
Apparently, the PDF shows a preexisting board for this purpose. Do you have available a name, model, and datasheet for that board? Also, this isn't rocket science --- oh, I'm wrong, it is ;) -- so it's...
View ArticleComment by periblepsis on Resistance Vs Reactance Definition
@DarkKnight If you want the physics then perhaps you should start by understanding resistance and conductance. I don't mean from an electronics standpoint. I mean from a physicist's standpoint, which...
View ArticleComment by periblepsis on is it possible disable or bypass 50Hz frequency...
I see that this question still remains for you after some time.
View ArticleComment by periblepsis on Beginner question regarding voltage divider for...
@homecockpits I also agree (it had certainly crossed my mind) with Arsenal's point about a series capacitance effect. That's what that curve looks like to me.
View ArticleComment by periblepsis on Band Pass Filter Design Simulation
@AEY It had crossed my mind earlier to say that you may also want to look up choppers.
View ArticleComment by periblepsis on Why isn't distortion much of a concern in RF...
Efficiency can be very high. Requires a tuned load. Why are you asking?
View ArticleComment by periblepsis on I'm making a PCM modulator and demodulator that...
You should write a lot more. If seems to me that you very much rushed things. Calm down and spend some time. Just my wish. Others may differ.
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