Questions tagged [function-generator]

A function generator usually refers to a piece of test equipment that generates a variety of waveforms over a range of frequencies. A typical unit may generate sine, square and triangle waves at a frequency up to around 20MHz, they tend to be less often used at higher RF frequencies.

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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 ...
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43 views

how to reduce signal noises

I am trying generate guided waves on simple metallic plate through piezo-ceramic material, I place two piezo on the surface of the plate at the different location and through Arbitrary pulse generator,...
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141 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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486 views

Why do I get a triangle wave in this Schmitt trigger oscillator?

I'm trying to design a function generator that can generate square, triangle and sine waves, with frequency varying between 100Hz and 100kHz. The circuit in the blue box is supposed to be a schmitt ...
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1k 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 ...
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629 views

Circuit for generating a PWM signal of varying high and low voltage values

I have a microcontroller that is generating a PWM signal between 0 and 12V of varying frequency. I'm looking to build some sort of circuit that will take this signal and then attenuate the high and ...
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2k views

How to build a circuit that generates a sine wave?

How can I build a circuit to generate sine waves? What I am working on is building a 555-timer circuit that gives 50% duty cycle square wave, then using a low-pass or band-pass filter tuned to the ...
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119 views

Question about function generator's arbitrary waveform generation ability [closed]

I want to buy a function generator with arbitrary waveform generation ability for lab use. My question is, can arbitrary waveform generation's capability generate one sine wave(act as noise) rides on ...
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2k views

How to use an oscilloscope with a function generator?

I am taking a digital electronics class and I am utterly confused. I am using Multisim to design circuits, and for one of my labs I had to use a function generator with a oscilloscope. Here is a ...
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146 views

signal generator - circularly polarised

I am testing some hardware in lab that computes the four Stokes parameters. To test the hardware, I want to generate circularly polarised sine wave. Provided the frequency is high enough (above ~100 ...
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973 views

Series RLC measurement result different with theory

I am measuring the current and voltage in simple RLC circuit: However,the result that I measured show big difference with the simulation result using Multisim. Why is there are a big difference ...
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AC and DC voltage are constant even though the frequency changes

In the circuit below, why does the AC voltage remain constant even though the frequency increases?
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926 views

How to amplify a signal to trigger a function generator?

I have two digital signals, I perform a AND operation on these two signal with an AND gate (TI SN74LS08N), and want to use the output signal to trigger a function generator which will generate another ...
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Output vanishes in op-amp

The circuit below is a PW modulating circuit: The output of the circuit is: But when I connect a resitive load to the output of the op-amp. The output vanishes: Can someone explain why is it ...
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Reason for voltage between grounds on Oscilloscope and Function Generator?

I was using one of the little XR2206 Function Generator kits with my analog oscilloscope. It displayed a sine wave no problem - but I noticed that as I connected the ground strap of my oscilloscope ...
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93 views

Sawtooth wave generator not working in simulation

I tried to simulate the following PWM generator: The output at the PWM node records a constant voltage, not a PWM signal. So I simulated the sawtooth generator separately And the output of this ...
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58 views

Function Generator amplifier to drive resonance circuit help

I have a model resonance circuit that is excited with an auxiliary winding and I need to build an amplifier to be able to amplify the current from the function generator in order to drive the ...
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1answer
50 views

Impedance of a function generator when off [closed]

I don't have a function generator at my disposal right now. I just want to know what's the typical resistance between + and - terminals of a function generator when it's not putting out a clock? ...
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45 views

How to infer the max current output of this function generator from its datasheet/specs?

I need to figure out the max current a function generator can output from its signal waveform output. Here is its datasheet. But there is no such parameter here. The output voltage can swing from -...
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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 ...
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1answer
28 views

How to split mono signal to sterio siginal of AD9833 Sin wave generator?

I am sorry that I am not well aware in audio amplifiers, that's why I am asking this question maybe it's my stupidity. I have an AD9833 sin wave generator, I need to connect the AD9833's output to ...
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88 views

Function generator design

So i was asked to design a function generator that eventually produces a sine wave at the output of the circuit and this is what i have come up with so far. A Schmitt trigger and then an integrator ...
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77 views

Function generator output

A function generator is hooked up to two resistors in series. The voltage across the function generator changes over time, shown by the different graphs The questions asks to find the output voltage ...
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1answer
52 views

How to use a signal from one function generator to gate another signal from another function generator?

I have 2 function generators with me and each is outputting its own signal. The first one is a 100kHz square signal and the second one is a 10MHz sine signal. What I want to do is use the first signal ...
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660 views

High power (but low frequency) arbitrary waveform generator

At least a few times I wished I had a "soundcard on steroids", so that I can replicate a specific waveform I'm getting from a generator, transformer or other devices I'm dealing with (e.g., see this ...
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Sawtooth Wave Generator Using Op Amps

So I'm trying to design a sawtooth wave generator that goes from 2.5V to 3.25V. I'm using this design: I'm getting a voltage range from around -4V to 4V. Is there any way for me to get 2.5 to 3.25 by ...
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86 views

Approximating dynamics in continuous-time with discrete-time

I'm not sure if this is the best place to ask this question, so please direct me to the appropriate community if this question seems out of place here. I am working on a project in which I'm trying ...
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299 views

What is the purpose of this RF sweep oscillator circuit section

I'm on a (very) long and arduous journey to build a RF sweep generator for tuned circuit filters. After much experimentation with free running LC oscillators, I conclude that for this application (...
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Float Function generator

Why are the Outputs of many function generators earth grounded? As far as I understand grounding the generator or Parts like the chassis can reduce shock hazards if something fails within the ...
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105 views

Function generator for OFDM signal

I have been simulating analog circuits where the input resembles an OFDM signal, but with lower frequencies. Right now I am generating the input signal with MATLAB. I now want to have a physical ...
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1answer
336 views

LM741 OP amp noob question

I have copied a schematic from my school project, and the task is to simulate it in pspice then do it in real life using a oscilloscope and function generator. I can't even do the first step which is ...
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817 views

How can I design a circuit that will generate a sinc function?

sinc function is given by sinx/x. How can i design a circuit to generate such type of signals what concepts should be used?
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1answer
97 views

Dropoff in white noise produced by AWG

I have a question regarding white noise generated by an arbitrary waveform generator (AWG). I'm working with one (AWG5014C) that has a sampling rate of 1.2 GSamples, with which I want to produce white ...
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3answers
421 views

Linear Rise exponential fall pulse generator

For a neutrino detector related experiment, I need to design a circuit which generates the pulse similar to the detector. This is required to test the front end electronics. Here are my final goals: ...
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695 views

How to make auto off functionality for an led lamp circuit with only transistor, capacitors, timer 555 chip?

The components I have are timer 555 chip, capacitors, and transitors. I want to create sleep functionality for a led lamp which consists of 6 leds in parallel and pnp, npn transistors. I want this ...
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661 views

Bipolar output from DAC with unipolar supplies

I want to use a unipolar 12-bit DAC (MCP4725) as a function generator with bipolar output (from -2.5 to +2.5V). Problem is, I only have two supplies of +5V and +12V referenced to the same ground, so ...
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313 views

How (or if?) to isolate inputs to op amp summer?

I am building a function generator as an exercise. I have a 9V power supply that I split into +/-4.5V. The +4.5V side powers an Arduino that outputs the waveform as a series of 8-bit values on ...
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1answer
894 views

Adding DC offset control to a function generator

I recently bought the following small hand-held function generator: http://www.velleman.co.uk/contents/en-uk/p371_hpg1.html But unfortunately it doesn't have a DC offset control. What is the easy way ...
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992 views

Low frequency low voltage Sine wave generator

I want to build a low frequency (around 10 Hz) and low voltage (about 3V) sine wave generator to drive an electro magnet. It would be very helpful, if you can suggest few efficient ways of doing this.
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Sawtooth waveform generation [closed]

I want to use sawtooth waveform for the PWM control of a boost controller. I want that the waveform should be positive (ie. go from 0 to V,) but I can only find circuits that give -V to V. Can someone ...
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Measuring technique for bridge rectifier driven by function generator

I am confused about a problem I am having measuring the output of a full wave diode bridge rectifier driven by a function generator. I am only getting half of the output as if it where a half wave ...
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Using a BK Precision function generator to drive an amplifier. How do I trigger the output from the function generator?

I acquired a modern BK Precision function generator (Model 4052) as part of a project to run an amplifier for a piezoelectric device. While I have figured out how to set the appropriate parameters for ...
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How to make a Ramp generator with a NE555 from 0V to 2/3VCC?

Hi Ladies and Gentlemen, It is related to an existing post here from early 2019. Voltage to PWM Circuit, need to understand frequency I am trying to make a simple 0-10V to PWM converter (idealy ...
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Testing a charge sensitive preamplifier

I have a charge sensitive preamplifier (CSP) that can be used with a photomultiplier tube (PMT) detector. (http://www.cremat.com/CR-Z-PMT.pdf) I am trying to figure out CSP's working. I don't have a ...
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64 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 ...
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99 views

RIGOL DS1054Z Fixed trigger time for sweeping using a FeelTech digital signal generator

How do you properly setup a frequency sweep with a digital signal generator and a RIGOL oscilloscope? I've got a setup similar to one in this video: https://www.youtube.com/watch?v=ni07A7sZCPM, ...
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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 ...
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How do I turn a function generator into a current controlled function generator?

I'm using a custom pulse generator with voltage controlled biphasic (both negative and positive voltage) pulse train output to stimulate a living tissue which is grounded on one side. I need to be ...
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Amplitude control in a signal generator

A am working on an FPGA based function generator and I am aiming for max frequency to be higher than 10 MHz, hopefully 30 MHz. I have implemented most of the functionality except amplitude control. ...
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192 views

Tektronix function generator THD

I am confused by the datasheet of the AFG3021C: https://www.tek.com/link-click-count?nid=75006&url=https%3A//download.tek.com/datasheet/AFG3000C-Arbitrary-Function-Generator-Datasheet-75W282817....