Questions tagged [waveform]
The shape of a value (usually voltage) when graphed over time.
240
questions
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3answers
71 views
choosing best n points on sine wave for wave generation
I want to generate a sine wave using DAC+DMA.
Currently, I have an example that generates a sine wave using DAC+DMA from an array of 60 points, at 8KHz.
I want to be able to increase the frequency up ...
0
votes
0answers
11 views
Problem with waveform output .tr0 of hspice
I'm trying to see my project output waveform through CosMosScope but I get the error "The file format is not understood", while it gets job concluded in .lis file and simulate as well in avan waves.
I'...
1
vote
1answer
54 views
Measuring 150kHz, ~30V peak waveform with good resolution
I am trying to choose test equipment for a systems test application and I am running into a road block with one of the specs I need to meet.
The device features an H-bridge output similar to the ...
1
vote
2answers
74 views
Need help producing triangular waveforms
I've recently started using pspice and just created my circuit but don't understand how to do step 3 on procedures. I've created my circuit based on the second picture shown below (ignore my 10V). I'...
0
votes
2answers
85 views
74HC14 waveform question
I am trying to get more familiar with using a 74HC14, as an experiment I have an ldr set up in a voltage divider configuration and the center tap goes to the input of the 74HC14 input 1. I have all ...
0
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2answers
42 views
Non-sinusoidal waveforms: relationship (resistance, capacitance)\$\xrightarrow{\text{affects}}\$ (amplitude, frequency)
During the laboratory we have analyzed the following two non-sinusoidal generators:
square-wave generator
triangular-wave generator
Sadly we didn't have enough time to complete the last task.
My ...
1
vote
3answers
114 views
Spikes on a square wave of a oscilloscope reading
This question is not really a problem i am having but a thought that want to get off my mind.
Usually on a reading on a oscilloscope especially on a square wave and sometime triangle waves, there are ...
0
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0answers
39 views
Is show waveform always referring to current?
In EveryCircuit, it allows you to "show waveform" for a particular component. For example:
Does waveform always refer to the current that is going through that component or are there ever alternate ...
0
votes
2answers
66 views
How to make a sawtooth waveform look less like a staircase (DAC)?
I am making a 4-bit digital-analogue converter using an adder circuit with four inputs. Each input is a square wave of a specific frequency. The output of the DAC is meant to be a sawtooth waveform ...
0
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2answers
150 views
Anyone know this serial bus waveform?
I'm working decoding some house intercom devices to know when someone is calling and also be able to open the door.
To do this I buffer the signal (some models has 15v, others 24v...) to a 3v3 level ...
0
votes
1answer
55 views
KiCad Simulation VSOURCE Triangle waveform
I want to simulate a second order active low-pass filter in KiCad, using the internal spice-based simulation tool. The input signal must be a triangle waveform of 30kHz and 0,5 V peak to peak, and the ...
0
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4answers
146 views
Waveform for one byte sent over 3.3 V TTL
I have this question in my lab which I am not able to solve. It would be really appreciated if I could get some help with this.
The question is: I need to draw the waveform for 1 byte sent over 3.3&...
0
votes
1answer
44 views
Current probe settings and measurement
I am having this Current probe
I am using this to measure the inductor peak current.
Inductor is rated at 2.05A.
Schematics :
Input Voltage to the converter during measurement is 7.5V
I am ...
0
votes
0answers
23 views
analog linear ramp with external pulse trigger
I am a hobbyist working on a project that requires a linear ramp generator (0VDC to 5VDC @ 120Hz) that is triggered by an external pulse. The requirement for the external pulse is so that the ramp ...
0
votes
1answer
81 views
Waveform at the negative terminal of an OPAMP
I am trying to sketch the negative waveform of an OPAMP over here.
I am not sure how to proceed with this as I have usually seen OPAMP with dual power supply. But this one have +9V and ground.
My ...
0
votes
1answer
60 views
Lightning Surge Protector that complies with DO-160. Indirect lightning waveform, Gas Discharge tube or MOV in parallel with tvs
Would it be wise to put Gas discharge tube in parallel with tvs diode?
OR
Would it be better to put MOV in parallel with tvs diode?
Also when deciding on tvs diode, how does indirect lightning ...
0
votes
0answers
22 views
ZMPT101B Voltage Module with Spikes in output Waveform
I am trying to use the ZMPT101B Voltage Module in order to measure AC Voltage .. I am trying to calibrate it, but when I see the output waveform in the oscilloscope, there are spikes all over the Sine ...
0
votes
2answers
59 views
Finding the waveform of current in a circuit
How do you find the waveform of current i1(t) in the following?
Do I need to find the capacitive and inductive reactance then find the current i1(t)?
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2answers
51 views
writing Keysight Binary Arbitrary (.barb) waveforms
Keysight 33600 waveform generators load waveforms in either .arb (ASCII) or .barb (binary) formats. For large waveforms with more than ~10M samples .barb load much faster.
How can I create .barb ...
0
votes
1answer
73 views
Finding a Fourier series of a Burst Fired sine wave having consecutive 2 cycles on & 2 cycles off?
I have been trying to find the solution of the following problem but with no luck.
I have a system that generates a waveform of sinusoidal type with the only difference being that this wave has 2 ...
0
votes
2answers
92 views
discrete triangle generator
I am trying to design a convertor from analog to PWM with very good THD as in this http://www.ti.com/lit/ug/slau508/slau508.pdf
The triangle generator (fig 2) (I am trying for 750Khz to 1Mhz) is a ...
2
votes
3answers
176 views
How to cut or remove the unwanted waveform?
I want to remove unwanted signal at particular time from the input signal. But I am not sure how to start this. I used capacitors to reduce the unwanted signal. It worked OK, but not well.
By seeing ...
2
votes
1answer
120 views
Half Bridge with PWM- gate signal problem
After making a half bridge inverter using a square wave (I asked a question on this website about it previously) I have now decided to use PWM signal in order to obtain a sine wave output and have ...
0
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2answers
127 views
Waveforms from a Function Generator, What is Good Enough?
I got an HP3311A function generator. The Sine wave forms below looks pretty bad to my eyes. Is it normal?
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0answers
85 views
Diode sine wave shaper - location of break points
I'm attempting to generate a sine wave from a triangular wave using the diode breakpoint method where the sine wave is approximated by multiple straight-line segments. Where should the breakpoints be ...
6
votes
4answers
1k views
What units are kpts?
I am parsing data from a Siglent SDS2000X oscilloscope. The first chunk (0x00 - 0x003) is for wave_length. The data sheet ...
3
votes
1answer
350 views
SPI waveform on Raspberry Pi is not clean, and I'm wondering why
I have a Raspberry Pi Zero Wireless and I wish to connect it to an FPGA via SPI. I have done some SPI tests with my 100 MHz oscilloscope and see the images shown below. The Raspberry Pi ...
1
vote
4answers
69 views
What is the difference between using an USB Logging Software and Logic Analyzer for signal sent to the printer?
In my recent pursuit in exploring the workings of an inkjet printing head, I need information like the default firing voltage and waveform set by the printer's manufacturer for different instructions ...
0
votes
0answers
30 views
Making a common ground connection between a DC power supply and a waveform generator(33120A)
I would like to use a DC power supply to as a source voltage to a sensor and a waveform generator(33120A) to give another input to the sensor. I would like to know how can I make a common ground ...
1
vote
1answer
88 views
Cheapest way of rectifying 60hz -> 30hz 120V AC to halve speed of PSC induction motor
I am trying to slow down a PSC motor. (VFD’s are expensive)
I can cheaply rectify AC into the following waveform.
2 positive peaks then 2 negative peaks repeating.
It would look like pictured.
...
0
votes
2answers
47 views
Keysight Waveform Building Software
I want to create a waveform for the agilent 33220a waveform generator. It is a 40us arbitrary wave that I have designed in the keysight waveform builder pro via the Benchvue software, however I want ...
-1
votes
1answer
127 views
Maximum frequency of sine wave generated using AD9833 and arduino
AD9833 can generate sine wave with frequency ranging from 0 to 12.5MHz. I want to make the sine generator using AD9833 and Arduino. What is the maximum frequency of the output sine wave possible in ...
1
vote
3answers
360 views
How to produce sawtooth waveform from square waveform?
I have a question pertaining the changing of square waveform to sawtooth waveform using OpAmp.
Following the picture below, I have to create a sawtooth waveform from a square waveform.
It seems that ...
1
vote
1answer
62 views
How does the output jump up to 7.5 volts when the switch is closed and opened again?
Sorry if the question might sound dumb. In this circuit, when the switch is closed the output voltage drops to zero and then rapidly charges back up to 5 volts. My question being, when the switch is ...
0
votes
2answers
430 views
Triangular waveform to square waveform circuit
I am working on a frequency counter project and I am in the midst of thinking about how to go about doing a triangular wave to square wave converter. I have done some research but couldn't find any ...
0
votes
1answer
64 views
Inverter Upgrade
I have 600VA, 12V Pure Sine Wave Inverter (Atleast under no load, its pure) having 8 IRF3205 Mosfets in total. (In full bridge configurtion)
I have modified its shunt. Now it do not give overload ...
1
vote
1answer
55 views
Sine to sqare waveform but with variable peak-to-peak input
I need to calculate the speed of a little generator that produces a bipolar sinusoidal waveform with a peak to peak voltage value variable with the velocity. The produced signal also has a frequency ...
0
votes
0answers
20 views
Detailed information on how to model single phase and 3-phase inverters in Matlab simulink
I am undertaking a research in renewable Energy.
Please,can you help me with detailed information of how the Simulink model for a single phase and 3-phase standalone inverter can be modelled and how ...
2
votes
3answers
276 views
Why is the output frequency of the zero crossing detector (square wave generator) double that of the input signal?
I have built a zero crossing detector that acts as a square wave generator according to the circuit diagram shown.
It is connected to a potential transformer.
The output from the potential ...
0
votes
1answer
372 views
4-Bit Adder Subtractor Quartus Prime Lite
I designed a 4-bit adder/subtractor circuit in Quartus Prime Lite. I am struggling with getting the correct output on the waveform. It is supposed to take the unsigned decimal numbers and add or ...
1
vote
3answers
204 views
crystal oscillator Application
(Note: I am aware that crystal and oscillators are two different things but a lot of people use them interchangeably so I am using it in the title.)
My question is about Oscillators, all oscillator ...
0
votes
1answer
73 views
Why is the pulse reflection becoming like this in pulse?
I use mosfet to generate a pulse, input the pulse into the transmission line, and after the reflection, test the waveform as shown. Why did the third reflected waveform become like this? I calculated ...
1
vote
1answer
55 views
Rise and fall timings of a pulse generator
In a digital programmable or static device, does the rise and fall timings and waveforms of a square pulse obey the reimann sum when observed at much higher resolutions?
If sampling rate of this ...
-3
votes
2answers
155 views
Why the wave on a battery is neither square nor sine? [closed]
I’m measuring the electrical wave on a 1.5 V battery - why is the wave this particular shape? Isn’t it supposed to be sine or square? Thanks!
1
vote
1answer
100 views
Weak output from TXB0104 at 1.5MHz
I'm driving a TXB0104 translator from 3.3V logic on the B side, VccB is 3.3V, VccA is 2.5V, OE is on VccA. Both supplies are solid. It's on a breadboard. (https://www.sparkfun.com/products/11771). The ...
0
votes
2answers
423 views
Can Op-Amp (LM358) works as an integrator without dual mode power supply?
I am a noob with analog electronics, so pardon me for any mistakes.
I recently started with Op-Amp and currently working on a project whereI am using Op-Amp in integrator mode to convert square wave ...
0
votes
1answer
238 views
Average Inductor Voltage equals Zero?
Okay I already read this post which answers the question mathematically
here,
at the end of the top answer the poster said:
"Thus, the only way to keep current from going to infinity is the ...
0
votes
1answer
83 views
Why does this “square wave” have what seems to be a charging action on it's leading edge?
I'm trying to produce a basic square wave output across a resistor from an ATMega328P Xplained mini. VCC is 5 V.
Setup:
Code: (Stuff with DDC/PORTB is just to control the onboard LED)
...
0
votes
1answer
233 views
Need a circuit to convert 230V sine wave into 5V square wave
We have already obtained our result using transformer for our college project ,but can't find circuit to convert 230V sine wave into 5V square wave which is supplied to microcontroller.
Edit:
Our ...
1
vote
0answers
104 views
Rubidium standard mystery output?
I've been playing with a frequency counter (Racal 2202R) that has a built-in rubidium standard.
It has two outputs, "Rb OUT 1" and "Rb OUT 2". I could not find any documentation at all, but the ...
