Questions tagged [linear]

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1answer
29 views

Changing the second order tansfer function to the standard form

I want to change this second order transfer function to the standard form to obtain tp, Mp and,...how can i change this to standard form?
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0answers
43 views

Controlled solenoid stroke length

Let me create a scenario to better illustrate the problem I have 1500 pens that I want to individually actuate upwards with 3 different distances, ex: 10mm/15mm/20mm I thought I could use a solenoid ...
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0answers
47 views

Subtractor using op-amp

I need to create a subtractor on LT spice using an LT1028A to emulate the difference between 90V and 23V; resulting in 67V. I have tried using a variety of resistance pairs, but in vain. Could anyone ...
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0answers
34 views

Traveling magnetic field

I'd like to do some experiments with a traveling magnetic field. To start with, I'd like to create a traveling magnetic field with a set of coils and try to propel an aluminum sheet. A basic model of ...
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2answers
59 views

What is the relationship between speaker volume change and resistance change?

Assume that we have a speaker whose volume is controlled by the potentiometer. If the resistance of the potentiometer changes by X%, and speaker volume changes by Y%, what is the ideal relationship ...
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2answers
89 views

Do all LEDs have the same optical power vs current curve?

Do all LEDs have the same optical power vs current curve? (NOTE: Thanks to some guidance and patience from some patons of EESE, not to mention my naieve/unfortunate/inaccurate word choice in the ...
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0answers
32 views

Finding input output relation of system

This question, Q1.42(c) has been troubling me for a bit, and I'm unsure of whether my answer is correct or not. This was my approach: I just labelled output of first stage as p[n] and output of ...
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1answer
54 views

Why are state variables sufficient to describe the exact future temporal dynamics of a system

I'm confused about state-space state variables. How come knowing the initial conditions with the input 'determine completely the future behavior of the system'? From such knowledge, I can only ...
1
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2answers
64 views

What is the current classification of linear motors used for positioning and scanning applications?

I am doing some research on positioning and scanning systems but I am encountering some problems trying to categorize linear motors. I can't understand what type of linear motors based on induction ...
3
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2answers
122 views

How to add CC/CV feature with single LM358 for variable linear power supply?

I have a few weeks with a problem in the design of my bench power supply. First of all I have this design from this guy on YouTube https://youtu.be/_CFIovMkRyg that made a variable power supply using ...
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0answers
25 views

Linear motion (quiet, variable speed)

I want to use a raspberry pi or arduino to create linear motion, back and fourth, my current goal is to make the pushing part for a baby rocker, but also a swing-rocker as a next project I have looked ...
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2answers
73 views

How do you split a summing point into two?

I am solving a control system example on block reduction rules and stuck on this particular step. According to me, I can move the summing point ahead of the middle block to get G4 multiplied to both ...
-2
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2answers
99 views

Help With Thevenin Resistance Problem

Ok so I'm really new to electrical engineering and I was wondering if someone could help me analyze this circuit using KVL and KCL node analysis. I'm not really sure as to how I can set the KVL and ...
-1
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2answers
198 views

Can someone help me solve this?

A linear circuit is shown in the figure below The VCCS (voltage controlled current source) is defined as 𝑖1=𝛽 ⋅𝑣𝐴 . The other elements in this circuit have the following values: 𝑅1=3.3𝑘Ω , 𝑅...
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0answers
26 views

Limit switch for Linear actuator Do I need relays or not

I am replacing the linear actuator in a handicap lift. The old wiring was disconnected when I acquired this lift. The lift uses a limit switch to stop the actuator outward stroke at maximum lift. But ...
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2answers
59 views

distance between linear and non-linear function of op-amp system

I have a circuit which I have taken a picture of as you can see, in which i have values of $$R1=1k\Omega,R2=10k\Omega,R3=10k\Omega.R4=10k\Omega,R5=20k\Omega$$ and sine input signal with off-set value=...
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1answer
22 views

Linear electrical network

Is zero input zero output test of an electrical network is necessary and sufficient condition for network to be linear i.e for example if I have electrical network of N-port and I measure current and ...
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2answers
40 views

Current flow and voltage difference

When there is a potential difference between two points in an electric circuit current flows . Then why does not current flow through an open circuit?
1
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1answer
49 views

finding the current in a branch with resistor, capactor and a voltage source

I'm solving a question in Linear circuit analysis 2 class. the question is to analyze a switching circuit with inductors and capacitors. this is the circuit in the time interval drawn in S-domain ...
-2
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3answers
85 views

Linear or nonlinear

Please is this graph for voltage against distance linear or nonlinear
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5answers
99 views

Why is the linear voltage regulator going hot although within its specification?

I'm having an issue with my NCP718 voltage regulator overheating to the point of thermal shutdown. I have attached a photo of my schematic. I am inputing ~15-20v and outputting 4V from the reg. The ...
1
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2answers
73 views

How to calculate the number of cycles my linear actuators can run

I've recently bought a set of linear actuators for a personal project of mine and I was wondering how many times can this linear actuator run before my battery runs out. (My battery is rated 12V, ...
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1answer
54 views

Can Linear Feedback Shift Register be used to generate pseudo radnom numbers with uniform distribution and zero correlation?

I need to implement a circuit inside the FPGA that generates pseudo random numbers with uniform distribution and zero correlation. To make the repeat period of the sequence long, it would require a ...
0
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1answer
47 views

Linear inverter

I need for my project a circuit that inverts a signal linearly. For example, if my Vdd=1 and Vin=0.8 then I would like Vout to be 1-0.8=0.2. What is the name of a circuit like this?
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3answers
39 views

Output drop/change in linear circuits

Lets say I have a linear circuit with some input and output voltages. Assume this is a block with inputs/outputs. When I connect input of another block to the output of my first block, I observe that ...
1
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2answers
140 views

NCP1117 Regulator voltage feedback not working correctly

I'm having a brain fart. Reading 3.1V ish on the output. My +5V0 net is after a schottky diode with 5V + a little bit coming from the NCP1117, and another 5V0 coming from a USB connector. Reason being ...
0
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1answer
48 views

Difference between Linear control theory and non linear control theory? especially topics/contents wise?

Although I know that a linear systems is the one that follows principle of superposition but I want to know what topics/contents do we study in each of both categories linear control and non linear ...
2
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1answer
270 views

What does zero transfer function mean?

I am solving a problem where I have to find the transfer function of a system. The system is $$A = \begin{bmatrix}2&-1&2\\0&1&-2\\0&0&-1\end{bmatrix}, B = \begin{bmatrix}1\\1\\...
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1answer
133 views

Less noisy version of max232

After (mentally) banging my head at the wall wondering why my own circuit is glitchy after the PC communicates with it, I read some posts, and noticed others had very similar problems. All because the ...
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0answers
277 views

How to make a non-linear potmeter more linear

I have an "Expression pedal" that worked fine on my old keyboard (Gem WX2+) but works almost like a digital switch on my new keyboard (Roland VR-09). The recommended expression pedal is a Roland EV-5 ...
1
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1answer
99 views

What happens when the AC frequency of the primary side of a linear power supply is too high?

When the frequency is too low, the inductance of the primary transformer coil becomes less effective = less efficiency, more wasted current and even lower Hz will lead to a short circuit. Let's say, ...
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0answers
44 views

Second Opinion for Finding the Power of Each Element in a Linear DC Single-Loop Circuit

I have been recently trying to solve problems from a book entitled Engineering Circuit Analysis by Hayt, et al.. But I have come to a difference in answers concerning power calculations when solving ...
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3answers
285 views

micro-switch 12V DC use in vehicle?

Using 12V DC (max 3 amp) linear actuator in a standard car, I need to use some micro-switches in the power circuit to prevent the actuator powering, if it's not in the correct position i.e. won't ...
0
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1answer
227 views

Convert linear voltage to PWM

I'm trying to convert a linear voltage to a 21kHz PWM signal using passive and active components. Do you have any idea how I can achieve this ? I tought about comparing my linear voltage to a ...
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2answers
106 views

Impedance of the circuit between given points

I am trying to learn one and two port networks and the book introduced Determinants and minors to calculate the impedance of the circuit. Kindly see the following question: I have managed to do the ...
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1answer
52 views

A full wave rectifier with resistive load is a linear load or non-linear load?

we know if the applied voltage across a load is sinusoidal and also the current drawn is also sinusoidal then we can say that the load is linear load.But we also know that diode is a non-linear device....
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0answers
184 views

How to detect source presence using LTC4412?

I'm using 2 power sources as shown in below picture. The status pin is suggested to pull HIGH to VCC(which can be the adapter input). As mentioned that Status pin OUTPUT is LOW when Wall adapter ...
0
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1answer
111 views

How to add a Linear and Logarithmic Potentiometer in Circuit Wizard

I'm new in this kind of thing and I'm using Circuit Wizard (Circuit Simulation Software). I was trying to simulate an overdrive pedal circuit (https://www.instructables.com/id/Overdrive-Pedal/) in ...
2
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2answers
216 views

Power Supply Design Help- failure at higher currents

I am trying to design a 60V 6A supply to power a power amplifier. Here is the circuit I have so far. Feel free to open it in Circuit Lab and play around: simulate this circuit – Schematic ...
0
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1answer
331 views

DIY 3-phase fast linear actuator

I have a need for a FAST linear actuator of which I may control position and speed reliably. I have already been looking into pnuematics, however it does not seem that this will fit my needs (I am ...
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0answers
64 views

Linear antenna: with electromagnetic coil, trap circuit

I am trying to understand the concept of the linear antennas. I have read that the linear antennas are the simplest form of the antenna in the case of asymmetrical (coaxial) feed. what happens if I ...
0
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3answers
736 views

Use 5v Linear Regulator and LDO 3.3V

I am designing a PCB with a STM32 microcontroller, a GPS, DataLogger and X-Bee module. The power supply is a 12V Battery. So in my project I need 5V and 3.3V, at the same time. I don't know if it is ...
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0answers
83 views

Linear Regulator Operation

I have a linear regulator with three pins. It's identifier is LM7805. I've taken a look at it's datasheet and it looks unlike linear regulators I've encountered. Is the the op amp circuit included in ...
1
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1answer
90 views

How to obtain the steady state response of the sampled periodic signal data?

Below the green plot Vin is 5Hz sine voltage signal from a function generator output sampled at 12kHz sampling rate: The blue plot Vout is the processed/filtered data by using the following code in ...
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1answer
219 views

Adding dependant sources in LtSpice (CDCS)

I have the following schematic of the circuit, I wanted to added I2 as a Current Dependant Current Source depending on current on in V1 as three times the value, or, I(I2) = 3I(V1) I have tried ...
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1answer
51 views

what is the max voltage that a cordless phone may handle above its original rate? [closed]

I am familiar with the fact that,today,most of the cordless phones have smps adaptors,which supplies a constant voltage to the base unit(opposed to the unregulated linear adaptors,which their rated ...
2
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6answers
492 views

Converting 0-5 volts (linear) to +2.5 — 0 — +2.5 volts (“vee”)

I'm trying to find a simple way to convert a 0-5 V output from a joystick hall effect sensor to +2.5 -- 0 -- +2.5 V. Here's how I want the response to look: The output voltage will be sent to a ...
1
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0answers
129 views

Linear power supply and mains filtering and protection

I'm designing my first linear power supply for my project which needs dual rail 12V (the regulation from 15V to 12V is on another board, 7812 and 7912). The +12V (+15V) rail will draw about 250mA, the ...
1
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1answer
55 views

Datasheet Notation for Filter Parameters

I've been reading through the LTC1264-High Speed Quad Universal Filter Building Block datasheet but I'm having some trouble deciphering the meaning of some of the variables used in the equations for ...
1
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1answer
77 views

Variable LDO implementation - capacitor size

I am designing two linear power supplies that will: Drop 9V DC to 5V DC to power a Raspberry Pi around 2.5A Drop 9V DC to 7.5V DC to power a DAC under 3A I plan to use Texas Instruments LDO UCC283-...

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