Output Definition and 1000 Threads

Homework Statement Homework Equations Find out the function of the system. Apply that to input. The Attempt at a Solution From given input output, system is a differentiator. So when input is n u[n] output is differentiating it, we get: n (impulse response) + u[n] Which is not in any of the...

Homework Statement Hello everyone, In the following problem I have to find the unknown impulse response g1(t) given the input and output signals, as shown below: (the answer is already there, at the moment I am trying to understand how to get there). Homework Equations [/B] I have...

hello to everybody, can somebody help me, how to connect audio output to dac i have a rado tuner, i just need to connect audio output to adc after to connect to arduino thnx

Homework Statement [/B]Y is output of rightmost flip flop. Q Homework Equations Drawing Timing Diagram. F(o/p) = F(clock)/(number of stages in output) The Attempt at a Solution The last flip flop has positive triggering clock. The moment Flip Flop output becomes 110X with MSB being rightmost...

Hello. I use HDHSDR software with my dongle and I need to record displayed spectrum. I've found how to record sound (.wav) but not yet how to record spectrum in a way for instance {frequency, level}. I spent a lot of time in searching such an information but with no sucess.

Hi I don't know if anyone here design tube power amps. I am calculating the gain of the class AB output stage of push pull tubes and output transformer. Class AB by definition has a small signal region that both tubes are working and is operating in pure class A. Only when input signal is large...

I found this on the net https://www.express.co.uk/news/nature/586404/Britain-freezing-winters-slump-solar-activity It states that solar activity will fall in the next few decades and Britain will get colder, Do you think this is true?

Homework Statement Homework EquationsThe Attempt at a Solution This is a solved example given in my Physics textbook . I am not understanding a couple of things . 1) How is Iin calculated as Vin/Rin ? Why is the book not taking potential difference between Base Emitter into consideration...

Homework Statement Homework EquationsThe Attempt at a Solution Output voltage and output current of an OP-Amp Taking the OP-Amp as an ideal OP-Amp, the voltage at terminal 1 is 0 with respect to ground. The voltage at B is ## V_B = - 0.5 V ## ## i_{in} ## is from A to B. There is...

1. Problem Statement Find the steady state output yss(t) for the input u(t)=t-π in terms of an infinite sum of sinusoids. We are given the transfer function as: 2. Homework Equations G(i) = ... |G(ik)| = ... Φ(ik) = ... (this is the angle) yss(t) = βk||G(ik)|ei(kt+Φ(ik)) ***check that this...

Homework Statement MATLAB The funciton "rockdynamicstage" outputs a matrix 4 by x, where x is somthing around 300( varies). The funciton "rockdynamicstage" is within the funciton handle "sim" with an input of gama0. (PayMass,Masstages,Massfrac,Thstage,IspStage,ChangeTstage) ar parameters that...

I read an article about a fusion reactor and how its waste product is helium and I am wondering what would happen if for whatever reason we output massive amounts of helium at a rate similar to how much CO2 we produced at our peak CO2 production? This is purely hypothetical so let's say we never...

Given two sets of load resistances and output voltages: Rload = 108 ohms - Vout = 9.6V Rload = 10 Ohms - Vout = 2.3V Find the source voltage and the output voltage when R1 and R2 are equal. When the resistance is very large, the voltage seems to be around 9.6. My assumption was that then the...

I'm trying to solve a relatively simple equation with DSolve in Mathematica. The equation I'm trying to solve along with the output from mathematica is shown In[1]:=DSolve[x*y'[x] == -b0*y[x]^2 - b1*y[x]^3, y[x], x] Out[1]:= {{y[x] -> InverseFunction[-((b1 Log[#1])/b0^2) + (b1 Log[b0 + b1...

I'm involved in a project with central heating. Due to a miscalculation the apartment radiators are about 50% too large. The current system water flow is based on the assumption that the radiators are the correct size (i.e. smaller), even though they are not. Due to this the water takes longer...

In a half wave rectifier only a single diode is present. One end of the secondary wire of the transistor is connected to the p side of diode while the other to the load resistor. The n side is connected to the load resistor. When the diode is reverse biased no current passes through it. But...

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Homework Statement 1. For the first measurement, a load resistance Rload = 119Ohms results in an output voltage V(OUT) = 11Volts. For the second measurement, Rload = 11Ohms results in an output voltage V(OUT) = 3.2Volts. From these two measurements, determine the output voltage V(OUT) when...

Homework Statement Homework EquationsThe Attempt at a Solution since they are in complex vector form, its missing a " j " on the sin() part, correct?

Hello everyone, I am working on a project with climate data and like to write a program that is able to find consecutive days with no precipitation, and furthermore only the period of each year that shows the longest lack of rainfall. As quite a Newbie regarding Fortran, I spent the last few...

I've had a side project in mind for a while involving motorized Rollerblade wheels, however I need to figure out a motor size that would give me the needed torque to actually accelerate 250lbs up to 25mph. I realize even a 5hp electric motor is large but I was wondering if ohms have any affect...

I have obtained the Dilog function in some output and was just wondering if anyone knew how to interpret its meaning. The mathematica notes tell me that ##\text{DiLog}(x,\alpha)## gives the dilogarithm function, which for real ##x>1## evaluates on the side of the branch prescribed by...

Homework Statement A fire hose for use in urban areas must be able to shoot a stream of water to a maximum height of 34 m. The water leaves the hose at ground level in a circular stream 4.0 cm in diameter. What minimum power is required to create such a stream of water? Every cubic meter of...

in our laboratory class we made a simple bridge rectifier circuit like this then we replaced D1 and D2 with resistors, and when we connected the probes of the oscilliscope on the load resistor it showed a DC output something like this(sorry for the bad drawing) can you guys explain why it...

Hey folks, I built a generator for fun and I would like to find out how much power it is producing when I use it. I have a way of measuring mechanical power in but I am not quite sure on how to measure electrical power out. I'm thinking I could use some LEDs to create a load (or maybe...

Homework Statement Hello everyone, I'm working on a (simplified) Mars energy model in which I need to calculate the area of land I need to cover in solar panels in order to achieve an particular power output. Say the land I'm looking at receives a constant solar irradiance of 100W/m^2 from...

Homework Statement I have problem at output of the first opamp . About 3 -4 minutes , the opamp's output voltage decreases by 0.1V . Although I reduced gain of opamp to 2, but the opamp 's output was still reducing 0.1V about 3 -4 minutes . Homework EquationsThe Attempt at a Solution

Homework Statement The question deals with a Moore machine of which I have omitted the diagram for reasons which will become apparent below. The initial state is ##q_0 / 0##. What is the output if the input string is aabbabaaa? 1) 101111101 2) 1101111101 3) 1010000010 4) None of the above...

I am having a difficult time communicating about concepts without the math. And I have some very specific questions. So here we go with one of them. Regarding a crank mechanism, say with a throw of 10 centimeters, how can I calculate what percentage of a given constant force that is applied...

Homework Statement Say you connect Circuit A with low output impedance to circuit B with high input impedance. Why does this cause minimal voltage drop compared to connecting them the other way around (high output to low input). Homework Equations P = V^2/R P = IV The Attempt at a Solution I...

Good day. I'm currently in the soldering phase of an RF circuit designed to operate an L293D motor chip. On the breadboard I managed to get it to work, but after soldering (and checking for shorts) I am not getting proper high/low signals sent through the encoder/decoder from 2 2p2t switches to...

Homework Statement I understand that the DC current will not flow through the capacitor once the capacitor gets fully charged. So, after a long time , only AC component of the net current flow through the capacitor. How to show that all of the carying voltage appear across the capacitor...

My home-made energiser runs off a car battery and uses a 555 timer to pulse a Darlington-style pair of transistors. These pulse the primary of an ignition coil. Since an electric fence is an open circuit, I'm concerned about excessive voltages developing in the coil secondary causing...

I'm not sure how to do these problems here. Help me learn them please!

Do alternators obey Ohm’s law? The alternator output voltage is proportional to the rotor excitation current. When reducing rotor excitation, the output voltage drops and the load resistance stays constant. Can why still use ohm law to determine the output current. Example alternator 480 v / 4...

I have a power supply which takes 230 VAC input and gives 24 VDC output. I use it to drive some differential pressure sensors (24 VDC supply and 0-10 VDC signal output). It is stated to have a noise of 80 mV peak to peak. This can equate to a 25 Pa variation in readings I'm finding with...

I have a 10SI delco alternator the voltage regulator and diode trio test open to all points I put it togather this way I know it will not charge unless you ground the one side of the brushes then the alternator will put out maximim output. What I want to know if you put resistance between ground...

Take the following circuit: The transistor turns the voltage input into a proportional current. Then it is said the resistor Rd turns the current back into a voltage. Then to calculate the output impedance of this circuit you would take Rd in parallel with the transisor's r0. But If you...

Hi. I have a question about output torque and efficiency of a simple gear pair as shown on the picture. So, I have a pinion and a gear. I give an input torque Tp in the clockwise direction. Therefore, the pinion will rotate with ωp angular velocity in clockwise and the gear ωg in...

Hi All, I have been trying to teach myself programming recently (Python, mostly). I obviously still have a good way to go. User MarneMath was nice-enough to help me in this post a while back: : https://www.physicsforums.com/threads/classification-valuation-problem-baseball.893418/#post-5630986...

Homework Statement A lot of people are familiar with equivalent inertia problems, where you have a drive train and inertia on different axis and you calculate the equivalent inertia on whichever shaft you want. This time I (try to) bring something new, trying to associate the output power to...

Hello, I am working on a project that requires both high voltage AC and DC. I was going to use an ignition coil for the AC because I thought it's output would be AC, but when I saw this illustration...

Hi, I'm trying to figure out how the angle of incidence will affect the voltage output of a photodiode. The obvious answer that comes to my mind is that the voltage output should be proportional to the cos(α), where α is the angle of incidence of light. However, I couldn't find any...

Hi Guys, Can Some one Help me to Figure Out how can i Convert Voice Signal from 3.5mm Jack to Voltage. Though the voice signal has low signal strength can i boost it using amplifer and to get output in Voltage what is the Process i am not figuring out the perfect way. Sugest me your Option...

Hi, I am a new student and trying to to measure the power and voltage output from B200 SDR device (https://www.ettus.com/content/files/b200-b210_spec_sheet.pdf) using oscilloscope (TDS3000 Series: https://www.atecorp.com/ATECorp/media/pdfs/data-sheets/Tektronix-TDS3000_Series_Manual.pdf)...

I attach an image of something I am experimenting with. The picture itself (and added text) should be self-explanatory. 1) Which way should my windings (clockwise or counter-clockwise) go around P1; P2; P3 & P4 for maximum voltage (V) ? [ 1 Ø ] [ 1 x single enamelled copper conductor ] [...

Homework Statement In the figure below find V(o) / V(s) Homework Equations In an opamp current doesn't enter through the inverting and non-inverting terminals, furthermore in DC conditions a capacitor acts like an open circuit The Attempt at a Solution The way I see it, both capacitors will...

Homework Statement I'm trying to find the output voltage ripple of a buck converter by using just the waveforms and the inductor ripple. Homework Equations [/B] I know that the answer is supposed to be D(1-D)Vin/(16*L*C*f^2) but I keep getting D(1-D)Vin/(8*L*C*f^2)The equations I end up...

I want to write a program that in the twodimensional array stores only capital and noncapital letters of the alphabet and the sign #. Everything else inputted cannot be stored in the array. How am i to do this in the easiest way? I can think of only checking for each input if it exists in some...

I am doing a math project. Our goal is to use Mathematica to design some small wind turbine blades, 3D print them, and then attaching it to a small dc motor. I did something very similar for science Olympiad, where we had been measuring the "power" by measuring the voltage between the two wires...