# Questions tagged [analysis]

Questions attempting to analyze the mathematical properties of a formula, the inner workings of a protocol, or the design of a given circuit.

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### How does product of two terms represented in control system block diagram?

How does the product of two terms represented in the control system block diagram? Let's say I want the output as a product of two states. i.e. y = x1*x2 how would I represent it in a block diagram?
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### zero-sequence circuit of the three phase transformer question

Although I have tried a lot, I cannot draw the zero sequence circuit. Can you help me? this is my try.I could only come to some
7 views

I have simulated radar cross-section (RCS) data of a small drone using CADFEKO. I'm using MATLAB to do the data analysis part. I have tried the histograms, heatmaps, error bars comparisons but still ...
70 views

### feedback BJT ac analysis [closed]

I'm having trouble with a BJT question. How can we do ac analysis of this circuit? My attempted solution is this:
25 views

### How to use the print step option in LTspice XVII?

I'm aware of the print_step option for transient analysis, but I can't seem to get it to work. I'm using LTspice XVII for windows 10 to simulate a DC DC converter for about 3s (It is necessary to do ...
24 views

### LTspice - Extracting magnitude of signal from AC analysis using .meas and the phase

I want to be able to produce a measure function such that the output of that function would give me the magnitude of a signal when its phase is -360deg. I tried using .meas AC name FIND mag(V(out)) ...
35 views

### BJT conceptual doubt

I was given this problem in a problem set. I want to ask what will the voltage at Base when $\beta \rightarrow \infty$. My answer to the problem - When $\beta \rightarrow \infty$ then width of ...
134 views

### Transistor analysis, how can I find the currents?

I am struggling with the currents and their directions. Here you can see the simple circuit part. Since Vth(EBJ)= 0.7, Vth(CBJ)= 0.7 I could calculate the VCE by V(CBJ)-V(EBJ)= Vc-Vb - (Ve-Vb) = ...
32 views

### 1000V MELF Diode Intermittent Failure. Diode shows degrading reverse voltage characteristics

Hello to the electronics community in this forum. I am currently facing a MELF diode intermittent failures. These diodes failed when the final assembly (potted) is tested in a functional test after ...
13 views

### Transient voltage through an inductor in a step RL circuit

The current through the inductor in the above circuit is 2 A at t = 0- when it is short-circuited, since u(-t) = 1 for t < 0 and 0 for t > 0. At t = ∞ the current is 0 A, so I(t) should equal 2e^-...
158 views

### Please explain the purpose of the marked resistors and diode in this transistor relay driver circuit

Please explain what the circled components are for. What is the difference between the $V_{cc}$ and $V_{in}$, can they be the same?
42 views

### DC analysis of P-type MOSFET circuit

For the following circuit I am trying to calculate the DC drain current $I_{DQ}$ I know firstly that while doing a DC analysis the capacitors act as open circuits. This means that there will be ...
127 views

### Equicalent circuit - RC // RC

I am doing a filter analysis of a simple network filter, requiring drawing some equivalent circuit to simplify the expression and analysis of the transfer function. The issue I've got is regarding a ...
56 views

### is it possible to make asynchronous down counter modulo 6 with 3 JK flip-flop?

in last week lab classes with my lecturer, we were asked to make an asynchoronous down counter mod 6 using jk flip-flop, but no one could make it until the end of the class. all of us has the same ...
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### AC circuit analysis with a transmission line involved

I'm trying to perform an AC analysis of a circuit that contains a piece of coax cable. The input voltage 'Vs' is a swept frequency (1MHz-150MHz) voltage source with constant amplitude. What I'm ...
77 views

### Analysis of Preamp circuit

I found this schematic (in Spanish) and annotated it with my interpretation. Anyone care to correct me or add?
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### superposition analysis technique

Below I am presented with the following circuit and asked to solve for the current through R1: EDIT: in the diagram below I made a mistake, V2 is shown as 8V, it is supposed to be 40 V. I apply a ...
77 views

### How to parse this protocol with an arduino?

I'm analyzing a signal from my building's intercom system to my tenant station. Intercom has two wires, +24V/0.27ma, and ground. Every 10 seconds, the system sends a "heartbeat" signal to the tenant ...
29 views

### Formally determining the minimum number of poles needed to realize some suggested switching arrangement

Many times, when designing passive switching circuits, one has the following engineering problem: We know we want to have some number of switches, each with some number of throws. For each possible ...
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### Question about the MOSFET saturation condition

I'm solving a problem in my textbook and I got stuck, and I have the solution manual of the textbook, so I went to see through the solution and I found a thing that I suspect to be wrong, due to my ...
408 views

### SDA pin on I2C lines seems weird

I am trying to analyze the I2C commands sent by a PC software to R3910 DSP chip The software uses a programming box (provided by the same company that manufactures the R3910 chip) to communicate ...
99 views