Tagged Questions

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 to draw amplitude spectrum in fourier series?

I want to draw amplitude spectrum of a fourier series of a triangular waveform. If I have trignometric coefficient values only, how can I draw amplitude spectrum. I faced some problems when trying to ...
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Cathode Ray Tube: Non-Uniform Magnetic Field

For an experiment, I found out that the charge to mass ratio of electron was $1.91 \times 10^{11}~Ckg^{-1}$. So, I overestimated from the theoretical quite a bit. I used a cathode ray tube with ...
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What happened to all of the Dynamic Signal Analyzers?

Decades back there were at least half a dozen instrumentation companies offering Dynamic Signal Analyzers (DSA's). Not Spectrum Analyzers, but rather Dynamic Signal Analyzers. The main differences ...
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Gain vs Output Impedence

I am currently trying to improve my understanding of analogue IC design and my textbook kind of brushes over this problem. It is made quite clear that a low output impedance is desired so that the ...
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Oscilloscope training resources

I would like to learn to use an oscilloscope properly. I used them a few times at school, but that was a long time ago and I've forgotten most of what I learned about their use. I'm now working with ...
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Sensor Performance Analysis

I've recently built a temperature sensor and have been testing it against a reference thermometer in several different scenarios/environments/temperature ranges. My question is, how do I analyse my ...
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Current Generalized Immittance Converter (CGIC) Nodal Analysis

Below shows the current generalized immittance converter. I am trying to derive the transfer function (V3/Vin) of the said filter but I am getting problems in obtaining the voltages at some of the ...
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When to process beam forming algorithms?

I am building a system that uses beam forming to locate noises at different spots. All of the spots will be in front of the microphones (180 degree range of spots). My first question is if the beam ...
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Circuit analysis (Intro to Parallel Circuits & Series)

We are just in the beginning phases of learning how to simplify circuits by finding equivalent resistance. I've gotten every problem right except for this one. The answer says its 2000 ohms, but I ...
223 views

Can somebody please analyse this circuit [closed]

Can somebody explain to me how this circuit works? i understand that it is an audio amplifier circuit and it inverts the signal, and inverts it again, but i am not sure why this is the case. also ...
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Nodal Analysis Question

I however do not see any wrong with my approach. But I am not getting the correct answer. Is there anything to do with grounding? Or am I missing something else?
176 views

Solve a circuit with the nodal analysis (1)

I have the following circuit... ...and I want to find Vo with the nodal analysis. At node 1 (V1): ...
81 views

how to treat a diode in a transient analysis

Hi, this fig is a model of a circuit, where the cap is representing the gate-to-source capacitance of a hi-side FET in a bridge circuit driving a coil. VD is the intrinsic diode in the FET from Source-...
402 views

Assistance with CMOS simulation

It's been a very long time since I took intro level EE courses. I'm working on a hobby project and as a refresher I figured I would simulate a CMOS inverter. For the life of me I can't figure out why ...
69 views

Loop analysis in confusing circuit

Here is the circuit I am trying to analyse. simulate this circuit – Schematic created using CircuitLab Now I know generally how to do this. Loop 1 we can call the RIGHT one and Loop ...
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What is a mesh/loop in a circuit?

I am a total beginner in electronics. I think it's apparently easy to identify all the concepts in the tutorials and books. The problem is that the concept is exemplified only a few times in simple ...
54 views

How to calculate R,L,C on a bandpass filter?

As part of a project I'm doing for the class Signal and Systems Analysis, I'm given the following: With A=10, T=0.25ms and To=1ms. I am then asked to: After reading a lot, I think that I ...
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Nodal analysis - what to do when a supernode spans entire circuit

I'm back again with a nodal analysis question. I'm getting better, but I've come to a problem again. Consider the following circuit with the bottom node as ground: I specifically don't know how to ...
762 views

Nodal analysis - how to handle two adjacent supernodes

I'm a first year engineering student who has a problem with harder nodal analysis problems. Consider the circuit in the attached image. The usual way to deal with the voltage sources in the upper ...
429 views

Thought Process on Designing Circuits

I'm currently in my second year of computer engineering. I've taken circuit analysis courses and have a good general understanding of components, and a little bit of digital design, however, I'm very ...
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I'm trying to determine the Thevenin voltage of a circuit using the node voltage method

I'm trying to determine the Thevenin voltage between the terminals a and b on this circuit: Notice that I've named the three essential nodes $v_1$, $v_2$ and $v_3$. I've highlighted the ...
267 views

DC analysis of common source MOSFET circuits to find gate voltage using different power supplies

simulate this circuit – Schematic created using CircuitLab strong text I am solving problems on DC analysis of MOSFET circuits. We are supposed to find various parameters like Id(Drain Current)...
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Since the z-transform of the zero order hold is 1, why bother including it in analysis or simulation?

The $z$-transform of the zero order hold is 1. So why should it even be considered in the discrete time analysis or simulation of discrete time control systems? Z\left(\frac{1-e^{-sT}}s\right)=\...
8k views

How to change the frequency of AC supply?

Im using an inverter to convert Dc into Ac from battery. I want to control the frequency of the alternating current ie., increase and decrease gradually (eg: 1Hz 2Hz 3Hz... 60 Hz). Is it possible to ...
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AC Analysis Mindset [closed]

I'm just trying to solidify my foundational knowledge of ac analysis. So when approached with a basic circuit, lets say a RLC circuit, should my first instinct be to convert each group of components ...
484 views

Av for small signal analysis with BJT for unbypassed emitter and ro in place

My question is about another question on this site. On that question Z(in) for small signal analysis with BJT for unbypassed emitter and r0 in place Zin is asked for a common emitter configuration ...
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analysis square waves oscillator: how do I calculate the values?

Which are the Vc (V+) and V-, I's and Vout values in these circuits? The node i's and the Vc and Ic?
102 views

What is the sign convention for generated power?

Generally speaking, generated power is denoted as negative, correct? If I understand correctly, this is just the convention. Conceptually, I think of it kind of like a force, it has a magnitude and ...
1k views

Thevenin equivalent resistance of circuit with diagonal resistors

I'm trying to find the Thevenin equivalent for part A of this circuit: I begin by opening the circuit at the dotted line of part A. Then I try to find $V_{oc}$ across the two terminals that are ...
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Should I assign currents to voltage sources in my circuit analysis

Mortals! I apologize if my question may seem, foolish, but I have a need of understanding a process in analyzing circuits. You see, when we are looking at resistors (non-sense, my lightning never ...
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Diode circuit analysis using ideal diodes exam problem

I've been reviewing some past exam and stumbled across this question So I need to find the current I through the middle diode and the voltage across the bottom left 10KΩ resistor. To try solve this ...
387 views

How to do derating analysis

I need help in learning derating analysis for a vienna rectifier circuit (may be anything). Do you guys suggest any material to do the derating analysis by hand for each component understanding the ...
3k views

Using an LM331 as a frequency to voltage converter, how to set frequency FSR?

I'm trying to use an LM331 in a frequency to voltage converter configuration. LM331 block diagram: I'm trying to implement this circuit from the datasheet for a supply voltage of 5V and an input ...
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Identifying this “Transistor”, in this particular circuit [closed]

I'm in FIRST robotics, and I've been helping with our robot over the past few weeks. Every robot (in FIRST) is required to have a status light, which is fancy-ily connected to some other gear. ...