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Questions tagged [sine]

For questions about sine waves as used in electronics (e.g. AC waveforms, oscillator outputs, signal generator outputs, etc.). Consider using in conjunction with tags such as "ac", "oscillator", "math", etc., if applicable.

For questions about sine waves as used in electronics (e.g. AC waveforms, oscillator outputs, signal generator outputs, etc.). Consider using in conjunction with tags such as , , , etc., if applicable.

275 questions
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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 does not help, although the moving disc might be of…
Dirk Bruere
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Why is sine wave preferred over other waveforms?

Why did scientists chose to go with sine wave to represent alternating current and not other waveforms like triangle and square? What advantage does sine offers above other waveforms in representing current and voltage?
Rookie91
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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? Do we use sine waves as test signal because of the…
LECS
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4 answers

Why is there no sine wave oscillator chip?

I'm trying to make a simple but good sine wave generator that will produce 1Vpp @ 1kHz. Sine waves are nature's oscillations. They're everywhere. So you'd think that it would be a piece of cake to make an electronic sine wave. Apparently not so. …
Paul Uszak
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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 converting this to audio might be a possibility?…
Paul Weber
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What causes the trough of a sine wave to become sharp?

I am using a white LED to send a 5 V p-p: +2.5 V to +7.5 V, DC offset of 5 V, sine wave of frequency 1 kHz as shown in the transmitter circuit. The current generated by the photodiode is converted to voltage using the load resistor. The receiver…
rockky007
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Comparator: Noisy sine to square wave, how much phase noise?

In a circuit a comparator is used to convert a sinusoidal signal to a square wave. The input signal however is not a clean sine wave, but has some noise added to it. The comparator is supposed to be ideal and has a hysteresis which is much larger…
kassiopeia
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Generating a differential signal

I was given a small task (actually it's part of a much larger task) where the requirement is to generate a signal which looks like it came from a microphone. The following requirements needs to be kept: 1.0Vpp Sine Wave Differential Now these are…
Tom L.
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Shannon-Nyquist - only for repeating signals?

This was triggered by the comments in this question. I'm using this definition of the Shannon-Nyquist theorem (form wikipedia): If a function x(t) contains no frequencies higher than B hertz, it is completely determined by giving its ordinates at a…
John B
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Why do log sine sweeps traditionally start from low frequency?

I'm doing a log sine sweep to get the frequency response of a device. The software works fine, but the first low frequency half period introduces a bit of DC offset in the signal coupling caps, so the DC operating point of the thing moves a bit at…
bobflux
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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 flickering. When the same set of LED driver + LED is…
Whiskeyjack
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How do I design a circuit to convert a 100 mV and 50 Hz sine wave to a square wave?

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.
Umangcern
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Sine generator - Bubba Oscillator

I am trying to simulate a Bubba Ocsillator on MATLAB, Simulink . The problem is that i am not able to generate the sinusoidal from the circuit. This below is my circuit : And this below is my result(Simulated for 10sec) : Zoomed result(Simulated…
Dravidian
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6 answers

Is this a suitable sine wave osc? how would I control the frequency?

Overview- I'm making a bank of analog sine wave oscillators and I'm interested in keeping the design compact. I've started by making a Wien Bridge oscillator. As I'm working from a single power supply and I'm trying to keep the design small, I've…
Jim
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Sine wave to square wave - Schmitt trigger

I need to transform a bipolar sine wave (varies from -5 V to 5 V, 1 kHz) to a square wave for further digital processing (0 to 3.3 V), as in this image: The important thing is that this sine wave can't be distorted, so there can't be any limiting…
przeski
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