A message from our CEO about the future of Stack Overflow and Stack Exchange. Read now.

Questions tagged [sine]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
0answers
27 views

Based on \$f(f) = \phi_{\beta} \; \land \; f(t) = |\beta_u| \$ determine type of oscillator

Imagine the below characteristics of feedback circuit in sinewave oscillator are drawn: $$f(f) = \phi_{\beta}$$ $$f(t) = |\beta_u|$$ Based on the characteristics, how can I tell: Which type of an ...
0
votes
2answers
41 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 ...
0
votes
1answer
44 views

Chart a sine wave, then adapting it to draw a conclusion [closed]

I have an unusual request and I am new to this. I was doing an experiment where I was charting electrical values on a Lecher Line (a type of antenna that creates a standing radio wave). I'm using ...
-1
votes
1answer
52 views

Finding capacitive load driving capability of a Sine wave crystal oscillator

I will be using Crystek CCSS-945X-25-100.000 sine wave oscillator to drive the reference CLKin pins of TI PLL IC LMK04832 This sine wave oscillator will be on a separate PCB which we are calling as "...
0
votes
1answer
64 views

Driving high impedance load with Crystek Sine Wave Oscillator- CCSS-945X-25-100.000

I am planning to use Crystek CCSS-945X-25-100.000 sine wave oscillator to drive the reference CLKin pins of TI PLL IC LMK04832 . Now in datasheet of oscillator, output power mentioned is 5dBm into 50 ...
20
votes
13answers
7k views

Why only sine waves?

I have already read a few EE texts where a sine wave is often seen. Why is the sine wave often used as a test function for a circuit or a system? Why don't we use any other signal instead of sine? ...
0
votes
1answer
38 views

How to change/calculate frequency of this oscillator circuit?

I stumbled on this circuit (PDF, redrawn below), built it on a breadboard and bingo - works like a charm with a nice 1.0053kHz sine wave on the output. A little noisy given the breadboard, but ...
0
votes
0answers
94 views

Opamp buffer output sine wave, is it normal?

I'm using this opamp - GS8331/32 to buffer voltage reference to ADC. Here my oscilloscope measure input and output of opamp: Why ouput is sine wave? Is it normal or because of my opamp? Any way to ...
1
vote
1answer
31 views

change in ac reading relative to the frequency

I'm working on a school project, just measuring the Vrms of two different waveforms at different frequencies. The function generators output is connected directly into an oscilloscope therefore the ...
0
votes
1answer
50 views

why nonperiodic signals still has the concept of frequency?

I'm new to EE from CS background, just a question on nonperiodic signals. I don't understand why nonperiodic signals still has the concept of frequency/frequency domain? The definition is : Period ...
0
votes
1answer
71 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 ...
1
vote
1answer
91 views

Sine to square on complex wave?

What are the required parts on a circuit to get a square wave out of a sine one following the constraint shown in the image? Schmitt triggers seem to work on continuous sine wave but as you can see, ...
0
votes
1answer
47 views

Spectral lines vs Envelope of PWM wave

On the wiki page of 'Duty Cycle' there is a nice animation that shows the frequency spectrum of PWM wave as its duty cycle is modulated from 0 to 100%. The animation shows the 'spectral lines' as ...
0
votes
3answers
204 views

Sinusoidal wave output from a GPIO

I think the question is not particularly MCU/board specified but I will be trying it on STM32F4-DISC board. I was thinking of how to output a nice sinewave from a normal GPIO output pin, but I was ...
0
votes
0answers
83 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 ...
5
votes
1answer
160 views

How to generate a controlled frequency sine wave using a microcontroller like PIC18F4550?

I'm designing a phonic wheel emulator. I have a PIC18F4550 and the following power supplies: +5V, -5V, 12V. I need to geneate a sine waves from frequencies near 500Hz up to approximately 8kHz. The ...
3
votes
1answer
102 views

Filtering a Square Wave into a Sine Wave

I am trying to Filter a +-4V odd inverted square wave into a sine wave. How should I go about doing so? So far I have computed the Fourier series of my particular input signal to be: Which I ...
2
votes
1answer
69 views

Sinusoidal Inverter [closed]

I purchased a pure sine power inverter and noticed on the back there is a warning: "Notice: The output of this device is not sinusoidal. It has a total harmonic distortion of 3 percent and maximum ...
7
votes
3answers
1k views

Glitch in AC sine wave interfering with phase cut dimming

My company installs ZigBee-based phase cut dimmers for bulbs and LEDs (those which support phase cut dimming). Recently, we encountered a site where we faced a flicker issue. The light is slightly ...
0
votes
0answers
189 views

Frequency divider in Verilog

I am trying to implement a clock divider with a 2^8 bit different frequencies. I understand that i need a counter that will count and once it elapses change some variable state and based on that ...
0
votes
2answers
108 views

How to reduce full sine wave LUT to a singe sine quadrant?

I have implemented a full sine wave LUT, but would prefer to reduce it to a quarter. ...
0
votes
3answers
164 views

Sine Wave Input for Op Amp Integrator but Output Looks Weird

The input is in sine form (AC input) but the output (in blue color) is the straight line. So what is wrong with my schematic in LT Spice this time? I thought I should've got output in sine form if I ...
1
vote
2answers
69 views

I need an equation to calculate the time for a power percentage of a half cycle sine wave into a resistive load

I need to calculate the time a thyristor/triac needs to be on for a desired percentage of full power of each half cycle of the AC line input. On for the full half cycle will give me 100%. On for 1/2 ...
0
votes
1answer
66 views

sine wave to square wave using LT1017

I am trying to convert sine wave of 50 Hz and 10 mV to square wave of 10 mV of positive side only. I used the following circuit. But the square wave has higher voltage compare to my requirement. ...
7
votes
1answer
794 views

How do I design a circuit to convert a 100 mV and 50 Hz sine wave to a square wave? [duplicate]

I have a sine wave of 100 mV and 50 Hz. I want to design a circuit that converts this sine wave into a square wave as shown in a figure.
0
votes
1answer
106 views

How can I build a circuit to convert sine waves to square waves at up to 1MHz? [duplicate]

May I ask how do I convert sine waves to square waves at a frequency up to 1MHz? New to digital electronics. Have done some research but not sure which circuit to use/ which is suitable. Appreciate ...
1
vote
1answer
511 views

Sine to square wave converter [duplicate]

How I can make this sine to square wave converter accept higher frequency? Because when I tested it, it only accepts 10KHZ max. I will need to input a higher level of frequency till 1000KHZ. Would ...
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
51 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
41 views

transformer to work in sinePWM waveform

How to design a transformer working with PWM waveform with the following data: fundamental frequency:50Hz, PWM switching frequency 10kHz. The transformer secondary should also be a PWM output, just ...
0
votes
1answer
120 views

sine wave bandpass filter with 741

I'm generating a sine wave to apply to a transistor in the push-pull configuration. I am using a symmetrical source with 741 operational amplifier, + the IC 555 with plym 60 Hz 50% duty clycle, + ...
0
votes
0answers
106 views

Why cant I get clear wave?

I'm trying to find a good stepper driver with low vibrations and low noise. So, I observed wave form between current sensing resistor of few stepper driver using my oscilloscope. The voltage between ...
0
votes
2answers
78 views

Analogue signal generation: Which is better Standalone or PWM DAC?

Most controller/processor come with PWM output and integrated standalone DAC module.... My need is to generate 50/60Hz analog signal for testing purpose! Which would be the good choice PWM DAC or ...
1
vote
1answer
61 views

Converting a high frequency ac signal into square wave without creating a low pass filter by accident

I've been building an induction heater for a while now and wanted to get the frequency tracking to work properly. I need to convert the up to 600V ~100khz sine wave signal into a square wave, I've ...
1
vote
3answers
190 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
67 views

What happens in a generator so that we get a sinusoidal voltage as an output?

I read this online, " For a travelling magnetic field in a circle, the induced magnetic field in the armature of the generator will be sinusoidal. That's why the generated voltage is a sinusoid, ...
1
vote
0answers
63 views

How do you calculate average absolute value of a sum of sin functions with different amplitudes and frequencies?

I cant seem to find the answer anywhere. I remember there was a simple formula for doing this but I dont have the book with it anymore. Finding where the function is positive and where is negative and ...
0
votes
1answer
219 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
1answer
345 views

10MHz Sine Wave Generator

I have been looking for some time for a good design for a ~10MHz sine wave generator, with variable frequency from about 5-20MHz. The max required peak to peak amplitude is 10V. Many suggestions on ...
0
votes
1answer
116 views

Generating sinewave from a pulse train by using a micro-controller

I want to create sine waves from 0.1Hz to 10Hz which are controlled from a software. For that I thought I can use micro controller as an interface between the PC and the sine wave signal. But if I ...
0
votes
4answers
106 views

Is a motor-generator set a reasonable way to get the purest waveform electricity?

It looks like audiophiles go as far as installing separate powerlines to power their high quality audio systems. The motivation is that the amplifier and other hardware would run cleaner when the ...
3
votes
2answers
251 views

Relation between the impedance of speaker and amplitude of sin wave?

I have an oscillator producing a sine wave with amplitude 3 V (so it oscillates between +3 V and -3 V). The oscillator is at about 500 Hz. I connected this to an 8 ohm speaker and I hear the sound ...
12
votes
10answers
5k views

How to check (with DIY methods) if an Inverter returns a Square or a Sine Wave?

I do not have an Oscilloscope, but I want to check if my 12V DC to 230V AC inverter does produce a sine or a square wave. Any way to verify that? I know how a sine wave and a square wave sound, so ...
0
votes
1answer
54 views

sinewave input input induction motor

If we put for standart 3 phase induction motor sinewave voltage input, will we get sinewave current if we measure motor current with osciloscope. At least sinewave like current ?
1
vote
1answer
188 views

Circuit for converting motor tacho-sensor sine wave output to 5V TTL for MCU

I'm trying to measure the speed of a washing machine motor. The motor has a speedometer attached to it, which generates a sine wave with frequency equal to rotation frequency of the motor. I'm ...
3
votes
1answer
100 views

Confusion about what EM fields really look like, and how that relates to data transmission, waveguides etc

After a discussion at work a few days ago, I realized I don't have a very good understanding of what RF energy is truly like. I've always thought, via physics and EE classes, that all EM waves (...
24
votes
17answers
11k views

What is a sine wave?

This came up when a student asked me. A simple question one might think. Except... how to define one without tautology? That is, without using the word "sine" (or cosine for that matter). Wikipedia ...
1
vote
1answer
90 views

Why can't phasors be equated to a sinusoid?

I'm having trouble understanding why a phasor for an AC sinusoid, let's say voltage (represented as Vrms/_50° for Vsin(ωt + 50°) to a current, for example) cannot be equated to the sinusoid in ...
0
votes
1answer
74 views

How can I modify this working circuit to reach 1V peak to peak voltage?

It's a 100 kHz sine wave generator. But I want to reach 1V peak to peak voltage.
1
vote
2answers
72 views

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 ...