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DROK Signal Generator, DC 3.3-30V Function Generator 5-30mA LCD Display PWM Pulse Frequency Duty Cycle Rectangular Wave Square Wave Signal Generator

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$12.99

$ 6 .99 $6.99

In Stock

1.NumberofItems:1


About this item

  • PARAMETER ---- operating voltage range DC 3.3v~30v; frequency range 1Hz-150kHz; output current 5-30mA; duty cycle range 0-100%.
  • APPLICATION ---- as square wave signal generator for experimental development; as square wave signal generator for motor driver; as adjustable pulse generator for MCU; as pulse generator, control related circuits (PWM dimming, speed regulating).
  • SERIAL COMMUNICATION ---- support serial communication, TTL level.
  • DATA AUTO STORAGE ---- all parameters will be saved automatically after setting and therefore won't lose when power off.
  • OTHER FEATURES ---- with LCD display to display frequency and duty cycle value; with case; PWM output, can set frequency and duty cycle separately by buttons; frequency value is divided into 4 range and switched automatically, with high precision.


Parameter:
1. Working voltage: DC 3.3v~30v
2. Frequency range: 1Hz~150kHz (divided into 4 ranges);
3. Frequency precision: 2% of each range;
4. Signal load capacity: output current is about 5-30mA;
5. Output Amplitude: PWM amplitude equal to the input voltage value
6. Environment Temperature Range: -20~+70℃
7. Duty cycle range: 0-100%.
Application:
1. As square wave signal generator for experimental development;
2. As square wave signal generator for motor driver;
3. As adjustable pulse generator for MCU;
4. As pulse generator, control related circuits (PWM dimming, speed regulating).
Setting Parameters:
There are 4 independent buttons on the module for setting the frequency value and the duty cycle value.
Supports short press (increase or decrease 1 unit by 1 unit) and long press (fast increase or decrease).
All setting parameters will be saved when powered off to achieve data guaranteed.
Frequency Display Instruction:
The frequency is divided into 4 ranges and switched automatically.
1. XXX (without decimal point): minimum unit is 1Hz, value range is 1Hz~999Hz.
2. X.XX (the decimal point is in the hundred digit): minimum unit is 0.01kHz, value range is 1.00kHz~9.99kHz.
3. XX.X (the decimal point is in the ten digit): minimum unit is 0.1kHz; value range is 10.0kHz~99.9kHz.
4. X.X.X (full decimal point): the minimum unit is 1kHz; the value range is 1kHz~150kHz
e.g. Frequency displays 100 represents 100Hz; displays 1.01 represents 1.01kHz;
displays 54.1 represents 54.1kHz; displays 1.2.4 represents 124kHz
Package Included:
1x Signal Generator


Josh
Reviewed in the United States on February 7, 2025
did not perform as expected. unsure if broken or just bad unit, but mine did not output a pwm signal
Randy
Reviewed in the United States on February 4, 2025
This little thing is perfect for applying power to 3 wire variable speed fans for testing. such as found in automotive coolant cooling fans and any other variable frequency driven variable speed fans using 3 and sometimes 4 wires.
Techdude
Reviewed in the United States on February 11, 2025
I checked the output on my oscilloscope and it is very - very clean square wave. The interface is easy to use, with responsive buttons and rapid adjustment. I love it!
Ali
Reviewed in the United States on February 1, 2025
I purchased this to test automotive tachometers. It works perfectly for this application. Excellent price!
Grumpy 24/7
Reviewed in the United States on July 11, 2024
I needed to be able to test the electric fan on my car. In addition to needing 12 volts DC, the fan also needed a 100Hz PWM signal injected to turn it on and off and adjust the RPM. This little device did exactly what I needed and gave me the assurance the fan itself was working. Which was important because a replacement fan costs several hundred dollars and wouldn't have fixed the problem.
Nix Trux
Reviewed in Canada on June 15, 2024
used it to regulate alternator out put on my truck, works perfectly. great value for money spent.
Michael O
Reviewed in the United States on March 31, 2024
Great little unit, works on Stroboscope that I built with Perkins-Elmer / EG & G Flashbulb Power supply.Had to adjust the "Pulse Width" to about 5 %. for the Flash power supply will work great.I was unable to adjust "Precision" of frequency / Move decimal point over by one digit like XXX . X for 10th of a second. Must not have the capability. Hence the 4 star rating.Hooking up and running was a breeze though even the Voltage is 24 VDC
Leonid Nasyedkin
Reviewed in Canada on December 6, 2024
facile à utiliser, good quality
Donald M. Rosendale
Reviewed in the United States on December 28, 2024
I used this device to provide a pulse to a diaphragm pump. The original circuit had a failure, and I had to come up with something quick to continue working - this fit the bill! Nice little unit!
charles
Reviewed in Canada on October 26, 2024
Great product
Customer
Reviewed in the United States on October 18, 2024
nice dc power range, can the frequency and duty with the buttons, using one to run a tweeter to drive the squirrels away from the outside motion sensors the control my recordings in homeseer, set at 25.0k 30% duty cycle, still looking for a case for each of them, but the first one is up and running, no more outside motion going off by the tree rats
Ramon Delgadillo Reacheres
Reviewed in Mexico on January 3, 2024
de gran utilidad para generar ondas a la frecuencia requerida
Danial Milner
Reviewed in Canada on March 20, 2022
handy little unit for the tech on the go. just hook a 9 volt battery to it and it works well. easy to use and connect.
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