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The 8 Best function generators of 2024

Are you trying to find function generators among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling function generators on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 18 hours of research and did 28 function generators tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best function generators you can buy today

No. 1
UNI T UTG932E 30MHz Function Generator Arbitrary Waveform Signal Generator Dual-Channel 200MSa/s 14 Bits Frequency Meter
  • UNI-T Arbitrary Waveform Generator UTG932E.
  • Signal generator,Dual channels,Output waveforms: Sine, square, pulse, ramp, noise, DC, arbitrary.
  • Modulation types: AM, FM, PM, FSK, Line, Log.
  • 24 groups non-volatile arbitrary waveform generator storage.Multi-language menu ,easy to operation
  • Function generator sampling rate of 200MSa/S.,4.3 inches TFT LCD screen
No. 2
Treedix XR2206 Signal Generator DIY Kit Sine/Triangle/Square Output 1Hz-1MHz Adjustable Frequency High Precision Function Signal Generator with Acrylic Case
  • This signal generator is a product to generate sine/triangle/square wave, which is also a DIY kit for you to weld and install.
  • Frequency can be from 1HZ-1MHZ; Adjustable frequency and amplitude.
  • Wide power supply range, you can use an external power supply DC9-12V or 9V battery.
  • All straight inserted components, simple installation and debugging.
  • Frequency adjustment can be coarse-tuning or fine-tuning.
No. 3
HiLetgo 2pcs ICL8038 Monolithic Function Signal Generator Module DIY Kit Sine Square Triangle
  • ICL8038 Monolithic Function Signal Generator Module DIY Kit
  • Frequency range: 50-5KHz,
  • Input: 12V DC
  • Model: ICL8038
  • uniform voltage is + VCC / 2
No. 4
FY8300 Generator 3-Channel Function Generator 60MHz 250MSa/s 14bits Arbitrary Waveform 4-Channel TTL Level Output(FY8300-30M US Plug 100-240V)
  • ✔ Completely independent 3-channel output (equivalent to three independent sources), capable of working synchronously, with precisely adjustable phase difference. Adopt DDS direct digital synthesis technology to produce accurate, stable and low distortion output . Desktop design with ABS plastic casing, powered by AC 100-240V wide voltage power supply
  • ✔ Using 2.4-inch (320 x 240) color display, with stable performance. Unique operating interface design, which can display 3-channel output state at the same time. All parameters can be calibrated by internal procedures. Large-scale integrated circuits, surface mount technology, high reliability and long service life
  • ✔ Equipped with powerful arbitrary waveform editing function as standard, it can be downloaded to the instrument output waveform after editing arbitrary waveform on PC. Powerful communication function, which can be controlled by PC. Output short circuit protection, all output terminals can work more than 60S under load short circuit
  • ✔ Press and hold the OK key during use, you can quickly save the parameter information currently output by the instrument, and the saved parameters can be automatically loaded at the next boot. Standard channel tracking function, when the tracking is on, all parameters of the 3 channels can be updated at the same time according to the user's configuration
  • ✔ With 64 groups of arbitrary waveform storage bits, each group has a storage depth of 8192 x 14bits (the longer the waveform storage depth, the more waveform details are saved, and the details can be restored with high accuracy). With digital output function, can realize any CMOS level with amplitude of 0-12V
No. 5
PWM Pulse Frequency Generator, Icstation Signal Generator Module DC 3.3V-30V Function Generator 5-30mA 1-Channel 1Hz-150kHz PWM Pulse Frequency Duty Cycle Square Wave LCD Display
  • ⇝PWM Pulse Frequency module work voltage range is DC 3.3V-30V; the frequency range is 1Hz-150kHz/1Hz-15kHz; the output current is 5-30mA.
  • ⇝PWM frequency supports 2 modes:normal mode & accurate mode.Regular mode with 1% duty cycle steps.Precision mode with 0.1% duty cycle steps.
  • ⇝With lock function; PWM output can set frequency & duty cycle separately; duty cycle upper and lower bounds adjustable; support serial communication; all data auto-saved after setting.
  • ⇝Square wave signal generator, generating square wave signal for experimental development, generating square wave signal that controls the motor driver, and generating adjustable pulses for MCU Dimmer; Dimmer; Speed governor, and so on.
  • ⇝There is no output voltage control. The output voltage is the same as the input voltage. That can be easily changed by adding a simple potentiometer.
No. 6
XR2206 Signal Generator Kit, Weytoll Precise Function Signal Generator Frequency Module 3-type Output 1Hz-1MHz Adjustable, 9-12V DC Input
  • 【High resolution]】Frequency module signal generator can generate sine/triangle/squared waveforms.
  • 【Great accuracy】the XR2206 function signal generator is precise, with a transparent case box shell for good assemble; Amplitude: 0-3V at 9V DC input; Distortion: less than 1% (at 1KHz); Flatness: +0.05dB 1Hz - 100kHz
  • 【SINE WAVES Amplitude】 0-3V at 9V DC Input Distortion: Less than 1% (at 1KHz) Flatness: +0.05dB 1Hz - 100kHz
  • 【SQUARED WAVES Amplitude】 8V (no load) at 9V DC Input Rise Time: Less than 50ns (at 1KHz) Fall Time: Less than 30ns (at 1KHz) Symmetry: Less than 5% (at 1KHz)
  • 【TRIANGLE WAVES Amplitude】 0-3V at 9V DC Input Linearity: Less than 1% (up to 100KHz) 10mA Package Size: Approx. 12 * 8 * 2cm / 4.72 * 3.15 * 0.8in Package Weight: 69g / 2.46oz
No. 7
MiOYOOW PWM Frequency Generator, 1-Channel 1Hz-150KHz Adjustable Pulse Duty Cycle Function Generator, Square Wave Signal Generator Module with LCD Display and Rotary Switch
  • 1. It's 1-channel PWM output signals. The Adjustable Frequency Range: from 1Hz to 150KHz. Please Note: 1Hz is the limit value. It is relatively large to receive external interference, such as wires or wireless or high temperature, so the fluctuation will be relatively large. It is recommended to use an output above 1Hz.
  • 2. Shell Protection and Clear LCD high definition Display: Display both Frequency and Duty Cycle in more clear status. High precision detection.
  • 3. Dual Work Mode. Support both Frequency Adjustment and Duty Cycle Adjustment. Support UART. Support enable output.
  • 4. Support power-down memory function: no need to set the data after power-off. Knob supports lock function to avoid misoperation.
  • 5. Wider Application: Square wave signal generator, generating square wave signal for experimental development, generating square wave signal that controls the motor driver, and generating adjustable pulses for MCU Dimmer; Dimmer; Speed governor, and so on.
No. 8
Signal Generator Module, Function Signal Generator 4-20mA 2-10V LCD Display PWM Pulse Adjustable Module Sine Wave Function Generator Module
  • MULTI-FUNCTION ADJUSTABLE ---The multi-function signal generator kit supports multiple modes such as PWM mode, pulse mode, signal source mode, and sine wave mode. Signal source mode: voltage source 2-10V, current source 4-20mA, sine wave mode: 1-1000Hz.
  • CLEAR LED DISPLAY ---Our signal generator has a bright and clear display screen and a simple control panel layout, which can be used to monitor the output current and voltage. You can easily switch the display simply by pressing the switch on the monitor.
  • STRONG LOAD CAPACITY ---The signal load capacity of this sine wave generator module is strong, and the output current can reach 30mA (Note: This product outputs signal source and cannot directly drive high-power loads). The voltage, frequency, and duty cycle are adjustable in PWM mode.
  • WIDE APPLICATION ---Our adjustable PWM pulse module/signal generator module can be used as signal generator, valve adjustment, inverter control, PLC debugging, panel debugging, LED test, analog transmitter output.
  • WARRANTY AND SERVICE --- Customer satisfaction is our top priority. We provide you with 24-hour online customer service and a 180-day refund policy. If you have any dissatisfaction, you can unconditionally request a full refund. If you have any questions, please feel free to contact us.
No. 9
HiLetgo 2pcs 3 Channel PWM Pulse Generator Signal Generator Module Adjustable Frequency Square Wave Rectangular Wave Signal Generator Duty Cycle with LCD Display 1Hz-150Khz
  • 3 Channel PWM Pulse Generator Signal Generator Module.
  • Adjustable Frequency Square Wave Rectangular Wave Signal Generator.
  • Three-channel PWM is outputted,wide frequency range and the duty ratio can be adjusted independently.
  • Has 8 independent keys,used to set the frequency and duty ratio,support short press (increase or decrease a unit) and long press (fast increase or decrease),very simple,set the parameters automatically save,power loss.
  • 3-Channels duty ratio button can be pressed at the same time,real-time adjustment, liquid crystal display is the last pressed button duty ratio,real-time is very strong,can be used as a simple several road duty ratio scan.
No. 10
FG-100 Function Generator DDS Signal Counter Signal Source Module 1HZ-500KHz
  • 【DDS technology】Due to the high precision and stable frequency of the DDS, it is also very suitable for the oscilloscope's scan time calibration factor.
  • 【square wave output】The square wave output is also suitable for oscilloscope attenuators and probe pulse adjustment.
  • 【multiple waveforms】The main output waveform are sine wave and square‑wave, triangular wave, sawtooth wave.
  • 【wave filter】Have a filter (can be turn on/off ) to suit the output of sine wave and pulse wave.
  • 【easy to operate】Small size, multiple functions, simple operation, easy to carry.

How to choose a good function generators

Does the idea of finding a fantastic function generators make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in function generators. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top function generators products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top function generators on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top function generators brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top function generators based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the function generators were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good function generators, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your function generators.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting function generators for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our function generators. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what function generators should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on function generators.