# 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.

31 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
42 views

### 3 phase sine inverter

i am trying to control bldc motor (sinusoidal commutation). I am somewhat controlling bldc motor, by applying sinusoidal voltage with 120 phase shifted to the phases. Now my issues is i cant able to ...
• 397
2k views

### How to make pulse wave from sine wave - audio frequency

I'm looking for a quick-and-dirty way of converting something close to a sine wave to a narrow pulse wave. Please see the image: a low bass note played through a broken transformer. I'm trying to re-...
• 41
1 vote
239 views

### How to measure the stability of sine wave peak-to-peak voltage

I am currently using AD9833 to output a sine wave signal. I have seen the sine wave signal on oscilloscope and saved a CSV file on my flash drive. I plan on using an Excel or Matlab to determine the ...
• 319
1 vote
539 views

### Double conversion UPS off a modified sine input?

I have a 2000W modified sine wave inverter running from 12V bank in a tractor-trailer. It’s company owned, so no changing or adding equipment. Only viable solution I can see to achieve a sine wave is ...
• 19
1 vote
128 views

### Proper way to design sine inverter

I have looked through many examples and tutorials of how to design sine wave inverter. But all those tutorials show how to make very basic inverter, which is not meant to be used for any load. Or they ...
• 1,039
1 vote
172 views

### Generating a sine wave

Hello so I thought I could use a VCO to generate a sine wave , but I didn't find anything that generates a sine wave with 500Khz. So then thought to use a microcontroller, like Atmel o Arduino, but it'...
1 vote
491 views

### Calculate output power of sine and triangular wave

What is the mathematical expression to calculate the power dissipated by a load crossed by two separate electrical signals representing two specific mathematical functions knowing: Load resistance ...
• 11
1 vote
109 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 ...
• 83
1 vote
400 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 ...
• 138
54 views

### Generate 200MHz Phase-Shifted Voltage Sine Waves

I'm looking into a way to construct a circuit that can generate ~200MHz negative voltage sine waves (8 channels), where there is 11 degrees of phase offset between the channels (0 deg, 11 deg, 22 deg, ...
96 views

### High voltage pad buffer design with 2nF load and ringing on first stage output

I am trying to design a high voltage (12V) buffer that will drive a sine wave with rail-to-rail peak-to-peak amplitude and a big capacitive load, maybe 3nF. Browsing I came upon this Master's project: ...
• 85
182 views

### Output voltage halved in 3-phase SPWM inverter simulation

I am just trying to simulate a 3-phase inverter connected to a star-connected load controlled through sine PWM modulation. In real life, I would expect a carrier that would go from zero to one. As ...
171 views

### Does this inductance measuring oscillator circuit work?

I'm planning to create a circuit to measure inductance by creating a stable sinusoidal oscillator out of it with a known value capacitor. Then measuring the oscillator frequency accurately with an ...
• 1,866
225 views

### Sine wave generator frequency

I'm trying to build a sine wave generator following this walkthrough. Specifically, I'm attempting the Clapp circuit as I'm targeting about 113 kHz. Here is the circuit schematic: In the article the ...
• 173
810 views

### Pure sine wave 500 W inverter

I am trying to come up with a pure sine wave DC to AC inverter. Above is the circuit diagram I tried simulating in Proteus 8086. I got errors as shown above, please help me fix those errors. See where ...
103 views

### I’m working with pcf7991at antenna driver ic

Just wondering if you can help me I’m trying to calculate capacitor and resistor values for a 125khz inductor coil . My coil measures 6.8 ohms. I’m not sure how to calculate the capacitor values ...
136 views

### Are there any mistakes in the circuit which would cause overheating and damage to IR2110 driver IC?

I’m designing a sine wave inverter. I bought 4 IR2110 ICs from local shop. All of them draws excess current and starts to overheat when I connect Vdd and Vss to 5v supply and Ground respectively. ...
98 views

### transform the square wave of a voltage inverter into a sine wave

I'm building a voltage inverter to power a refrigerator compressor, to lower the cost and simplify the project. I chose to use mosfet irfz44n on the primary part of the inverter, which however will ...
• 17
443 views

### Amplify 1kHz sine wave from AD9833 DDS using LMH6609 operational amplifier

I'm trying to amplify a 1kHz sine wave signal from the AD9833 DDS chip (0.6Vp-p) to a more usable level (6Vp-p) for a sort of function generator. I plan to work with higher frequencies as well. So I ...
• 15
93 views

### Pure sine inverter?

I just bought a van and am planning on traveling across country with my pup. I want an affordable pure sine inverter I can easily use. It is cold here and I’m sure it will get colder as I travel. I ...
302 views

### Phase Difference in LTSpice: Op-Amps vs. Voltage Sources

Below I have two different circuits: The left circuit takes a sine-wave and buffers it on one path and then inverts it on the second path using universal amps. The 180 deg out-of-phase sine waves ...
1k views

### Op-amp with constant output voltage (Peak to Peak)

I am new to opamps and am trying to amplify a variable frequency sine wave to a constant 5V peak-to-peak using opamps. The input signal amplitude changes with frequency, but the opamp should always ...
• 327
30 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 ...
• 179
221 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 ...
• 41
284 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 ...
• 213
66 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 ...
• 229
613 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 ...
• 1,167
118 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 ...
• 881
57 views

### How to determine the Peak Factor of a multiple frequency sine wave of different amplitudes?

Peak Factor of an AC signal How to determine the Peak Factor of a multiple frequency sine wave of different amplitudes? Like in the given question: