Questions tagged [waveform]

The shape of a value (usually voltage) when graphed over time.

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How do I modify this working circuit to work with a single 0 - 5 V rail?

I want to build a sine wave generator, but I have just +5 V and 0 V. I build the schematic in LTSpice. If I try with +5 V and -5 V it works very well, but when I try with +5 V and 0 V it doesn't works ...
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Measure current through a stepper motor coil [closed]

I have a TB6600 stepper motor driver and I wanted to measure and observe the current through a single phase (as shown on pg. 23 of the data sheet) of the connected stepper motor on an oscilloscope. ...
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How to produce this type of wave?

Can we use Virtuoso Cadence to produce this type of wave(c,first picture)?it is the wave that PZT produced My schematic and waveform of connecting high pass
XM551's user avatar
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Why am I getting a half-wave rectified output when i am using a full-wave rectifier?

I have recently gotten back into electronics and have access to a lab with a signal generator and oscilloscope. I have been trying to teach myself how to use this equipment by building small and ...
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What would be the waveform of output of this circuit?

I want to know what would be the waveform of Voutput of the schematic below simulate this circuit – Schematic created using CircuitLab The Falstad Simulation I tried to solve it using circuit ...
onur cevik's user avatar
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Why can the loading resistor and capacitor let the unloading waveform become from negative to positive voltage?

Fig(1) is part of schematic,and it generate a sine wave .Fig(2) shows two waveform which are with load and unload,i can understand that these two waveforms will be different because of loading,but why ...
electronic component's user avatar
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How to calculate frequency of this Op Amp square wave oscillator?

I was trying to come up with the equation to calculate the frequency of this circuit. R1 and R2 are creating analog ground because I am using bipolar op amp for a single supply operation. Thank you ...
Antonín Gazda's user avatar
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Strange Waveform at high frequency from transimpedence amplifier

Using a simple transimpedence amplifier setup, I was able to measure noise from the output waveform by applying a small signal to the non-inverting terminal, while the inverting terminal receives dark ...
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21 votes
2 answers
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Why is Zener avalanche noise saw tooth shaped?

I have the following schematic of a Zener based noise source:- simulate this circuit – Schematic created using CircuitLab When built, an oscilloscope reveals a saw tooth noise signal at the "...
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Is it easier to attenuate a sine wave or a more complex wave?

All other variables being equal, how does waveform complexity of a plane wave affect shielding effectiveness? Is it easier to attenuate a sine wave or a complex waveform?
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What electrical component serves or can serve this function?

I was thinking about what diodes can do to AC current, how they can be used to rectify alternating current by only letting it pass in one direction, so only the positive part of the wave or the ...
Tom's user avatar
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Interaction of AC and DC waveforms in motorcycle frame and their effect on AC & DC components

We are undertaking a LED lighting project and have figured out the way circuit in motorcycle works, the AC return is through frame and the DC return (negative) is through the frame to negative ground ...
Thomas Branley's user avatar
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535 views

How can I reconstruct exported oscilloscope data?

I want to reconstruct oscilloscope data imported into a spreadsheet directly from my Velleman PCSU200 oscilloscope. The data of primary interest are the frequency and amplitude, I'm not interested in ...
Tony's user avatar
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SR latch timing diagram or waveform with delay, help!

I'm having trouble solving these two problems (my solution and general solution showed): What I did was follow the truth table and based on the combination on the graph draw the appropriate state ...
redGarrian's user avatar
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1 answer
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Signal in and out of flip according to IEEE symbols

I have the following IEEE symbol for a SR flip-flop I have to work out the waveforms W and X given A and B. Here are A, B and the associated solution for W and X (as given by the book): From my ...
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Generating a cosine wave with multisim

I'm attempting to complete a project using multisim. I have to determine resistor and source values for a differential opamp. One of the specifications is to supply a -10 amplitude cosine wave when ...
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1 answer
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Decoding waveform from RFID 125 khz reader

I've recently bought a chinese reader for EM4100 and compatible cards: it has an USB to UART converter to get commands from the software and an STM8S10 MCU responsible for the RFID comunication. I ...
sguerrini97's user avatar
3 votes
1 answer
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Understanding digital filters, specifically their effects on time domain information, how to preserve the waveform of a signal being filtered?

According to Steven W. Smith, in his book: The Scientist and Engineer's Guide to Digital Signal Processing, when designing a digital filter, "Good performance in the time domain results in poor ...
Albukhari's user avatar
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2 answers
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What is the purpose of the series of actions: amplification, band-pass, rectification, and low-pass?

Can someone describe for me in simple words (if possible) what happens to a signal if we: Amplify it by $\times 40,000$ Band pass filter it (750-5000 Hz) Full wave rectify it Low pass filter it (<...
user135172's user avatar
2 votes
1 answer
356 views

Average value of Vout

I have the following circuit: where Vin is waveform with the frequency of 1kHz and amplitude 10V. The diodes are ideal. I need to find the average value of Vout. I found that when Vin > 0 then D1 is ...
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Actuating Pencil To Draw Waveforms

I am looking to make a pencil whose tip moves to create a waveform as you move it across the paper.In essence, I want to be able to record a sound and then play the sound through the pencil whilst I ...
Abdel Darwish's user avatar
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3 answers
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Average value of current or voltage [closed]

I had read that average value of current must be calculated for half time period. For example if we apply it for a sine value full time period then its value becomes zero. But for any arbritrary ...
Doraemon's user avatar
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1 answer
125 views

Square Wave (w / Pulse Missing) Generation

this is probably a simple one for anyone with some electronics design experience (which I do not have). Can anyone tell me how to build a simple circuit which generates a square wave but has every nth ...
phased's user avatar
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4 answers
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VHDL - D flip flop simulation goes wrong

I am trying to simulate a D flip-flop using VHDL code which I compile and run using GHDL and later I ploting the waveform using GTKwave. The problem is that my teacher told me that, when using D flip-...
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How do i analyze the following waveform to find out the voltage at t=6us?

How do I analyze the following waveform to find out the voltage at \$t=6\mu s\$?
Nihal Mohamed's user avatar
2 votes
1 answer
3k views

Diode - draw output waveform

Question: Positive half-cycle: D1 ON, D2,D3 OFF Negative half-cycle: D3 ON, D2 OFF(Vin>=-4V), D2 ON(Vin<-4V), D1 OFF First positive half-cycle is not steady state. Considering from the first ...
Utshaw's user avatar
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Diode - output waveform of a network

Question: Determine the output waveform for the network(assume that all diodes are ideal) The book says for the positive half-cycle it will be like this: Similarly I think that for the negative ...
Utshaw's user avatar
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1 answer
154 views

Converting pulse into volt? [duplicate]

I am working on the lab which is allowed to ask other people for hints. Below picture is part that I don't understand. In the image, program called "Audacity" is used to capture that waveform. My ...
Kam's user avatar
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-1 votes
1 answer
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Can't understand concept, range of the pulse (waveform)

I am working on the lab which is allowed to ask other people for hints. In the image, program called "Audacity" is used to capture that waveform. Question 1 In the image it says, "The peak-to-...
Kam's user avatar
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1 answer
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Noisy RLC circuit

I have made a printed circuit board to test different inductor and capacitor values at their resonant frequencies. I am trying to measure voltage drop when two coils are resonantly coupled at ...
J.Doe's user avatar
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6 votes
3 answers
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Peak to Peak vs. Amplitude

For a sine wave, Amplitude is the fluctuation or displacement of the wave from its mean value. Peak-to-peak (pk-pk) is the difference between the maximum positive and the maximum negative amplitudes ...
Yasindu's user avatar
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-4 votes
1 answer
863 views

RC Differentiator circuit with pulsating DC voltage

The circuit shown in the picture is a RC differentiator circuit whose output is a pure sine wave while the input is pulsating DC. I wonder how the circuit converts pulsating DC input voltage to a pure ...
Alex's user avatar
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2 votes
3 answers
3k views

Obtaining a triangle wave from a square wave using a LM324N op-amp

I am generating a square wave with a 555 timer chip and I am trying to obtain a triangle wave from the 555's output by using an op-amp (LM324N) as an integrator. The op-amp is in single power supply ...
andreas.vitikan's user avatar
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3 answers
2k views

Voltage Standing Wave Ratio Derivation

I don't understand how amplitude of incident and reflected voltage of wave equation comes out with \$e^{j2\beta z}\$ next to reflection coefficient. What is the meaning of it? Why is it part of the ...
Sysnaptic's user avatar
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1 answer
379 views

Voltage waveform at the Emitter of a Buck Converter?

In one of the questions I am trying to resolve, I am given the Vbe waveform and I am told to draw "waveforms related to Q1". I am guessing that means the emitter voltage waveform - right? The Vbe ...
user1406716's user avatar
0 votes
1 answer
2k views

Circuit to increase current of arbitrary waveform generator

I am trying to create a setup for some Physics experiments - so my background is Physics, not Electrical Engineer that can do circuit design. But I can put a circuit together. I need to amplify the ...
axawire's user avatar
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1 answer
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What are the practical differences between pulse and stepped frequency radars?

Books on the subject of ground penetrating radars provide definitions of pulse and stepped frequency radars, mentioning the structure of their signal and other technical details. However, I was not ...
freezer's user avatar
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1 vote
4 answers
309 views

Overtones Produced From Speaker Load on Asymmetric Square Wave

What I am doing I built a circuit using a 555 timing chip in astable mode which produces a square wave. There is a potentiometer which allows me to adjust the frequency produced. One aspect of this ...
Tim's user avatar
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0 votes
2 answers
417 views

How to stabilize my sawtooth oscillator

I'm experimenting with waveform generation and I'm using the low-voltage op-amps mcp6002, powered by an arduino due with 3.3V, single supply (3.3V-0V). The circuit i'm using is similar to this one (...
Frida Kahlo's user avatar
2 votes
1 answer
348 views

SPI frame on a dsPIC

I've just started using SPI on a dsPIC, and I noticed some strange behavior on a waveform (see image below). SPI module is configured in the master 8-bit mode. On the shown waveform you can see a byte ...
Marko Gulin's user avatar
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1 vote
1 answer
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Drain to Source Current Waveform on Mosfet is Slow

I am currently trying to build conventional bi-directional DC converter and see the mosfet behavior when controlled with PWM signal. based on theory, the drain-source current (Ids) and drain to source ...
Dian Akbar's user avatar
2 votes
4 answers
5k views

How can I generate positive and negative square wave with frequency of 1MHz?

I am planning to generate a square wave with positive and negative voltage, so basically, I create a 1MHz square wave from a microcontroller and send the output to a circuit which will convert the 0-...
hideyuki.ebp's user avatar
1 vote
3 answers
6k views

What role does the capacitor play in an AM demodulating circuit? [closed]

The goal of this question. Demodulate the AM signal. (Please assume a diode demodulating AM radio of the most imaginable simplicity.) I am assuming an alternating current sine wave is coming into ...
Sedumjoy's user avatar
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2 votes
1 answer
209 views

DC to AC welder accessory circuit

I want to create an external accessory for a DC welder which would create square wave ac. This would be in the ball park of 20V 130A 60hz. My idea is to use solid state relays to flip the polarity of ...
Fred Wilson's user avatar
-1 votes
1 answer
3k views

Sine Wave Generation (DAC) with/without LUT

I am currently working with the Xilinx Basys3 FPGA board and one of my task is to generate an analog sine wave (for input into oscilloscope) with the PMOD DAC module. I have thus far successfully ...
stephchia's user avatar
3 votes
2 answers
316 views

Quality of a square wave?

For an assignment I was asked to evaluate the quality of a square wave I had generated with an op-amp. After spending quite a bit of time searching I have yet to be able to find a definition of the ...
Ulad Kasach's user avatar
3 votes
2 answers
7k views

Export Modelsim waveforms as image for printing

I want to export the Modelsim waveforms of my simulated design in a form where they can look decent when printed. To be more specific, without the black background, in a vector format preferably. Not ...
Arkoudinos's user avatar
2 votes
2 answers
984 views

How to "hold" TTL pulse

How would I produce a pulse like this image? This is to power and actuate a solenoid valve. I'm using a 3D printer Arduino board to do this. This is what I have so far. The if code_seen() passes a ...
user7644509's user avatar
-3 votes
1 answer
130 views

Calculating voltage drop across part of an AC circuit [closed]

I have the question: "If the supply to a circuit is \$25\sin (628.3 t) ~V\$ and the voltage drop across one of the components is \$18\sin (628.3t - 0.52) ~V\$. Calculate the voltage drop across the ...
Dan Khan's user avatar
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0 votes
3 answers
2k views

Obtaining sinusoidal expression

I have the question " The instantaneous values of two alternating currents are given by i1 = 20sinwt amperes and i2 = 10sin(wt + pi/3) amperes. By plotting i1 and i2 on the same axes, using the same ...
Dan Khan's user avatar
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