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- Module description：PWM output, frequency and duty cycle can be set respectively;
- Normal mode: Frequency range 1Hz ~ 150kHz, duty cycle 000 ~ 100%, duty cycle step 1%
- Fine mode: Frequency range: 1Hz ~ 15KHz, duty cycle: 00.0 ~ 100%, duty cycle step: 0.1%
- The frequency is divided into four ranges, automatic switching:
- XXX (without decimal point): the minimum unit is 1Hz, and the value range is 1Hz ~ 999hz;
- The minimum unit of X.XX (the decimal point is in the hundreds) is 0.01khz, and the value range is 1.00khz ~ 9.99khz
- XX. X (decimal point in ten digits): the minimum unit is 0.1khz; Value range: 10.0khz ~ 99.9khz
- X.X.X (the decimal point is in the tens and hundreds): the minimum unit is 1kHz; Value range: 1kHz ~ 150kHz
- Frequency display: 100 indicates that PWM outputs 100Hz pulses;
- 1.01 indicates PWM output pulse of 1.01k;
- 54.1 indicates that the PWM outputs a pulse of 54.1khz;
- 1.2.4 indicates that the PWM outputs 124khz pulses;
- Duty cycle value range: 0 ~ 100%
- All setting parameters support power down saving
- Parameters:
- Working voltage: 3.3 ~ 30V;
- Frequency range: ordinary mode 1Hz ~ 150kHz; Fine mode: 1Hz ~ 15KHz; 3.Frequency accuracy: the accuracy in each range is about 2%; 4.Signal load capacity: the output current can be about 5 ~ 30mA; 5.Output amplitude: the PWM amplitude is equal to the power supply voltage;6.Temperature: - 20 ~ + 70 ℃.
- Parameter Setting:
- This product adjusts the frequency and duty cycle by rotating the potentiometer.
- It can realize rapid adjustment according to the rotation speed.
- By default, adjust the duty cycle. Short press the adjustment frequency, long press for 2 seconds to lock, and long press for 5 seconds to switch the mode (normal mode / fine mode).
- The operation is simple. After setting, the parameters are automatically saved and will not be lost in power failure.
Mark F
2025-09-01 11:43:29
Functions as advertised
Tom Turner
2025-08-03 13:21:53
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JTK
2025-07-26 19:03:06
I use these for a motor speed PWM control. They are predictable and repeatable. Not particularly rugged, but they work as intended.
MGP
2025-07-10 18:16:27
I bought this signal generator to test a PWM-controlled engine cooling fan that I want to use for a project car. It was easy enough to connect, and it worked well. I turned the knob until the fan blade started turning, and as I adjusted it higher and lower, the fan spun faster or slower. Now I know for sure that the fan works, and I have a new diagnostic tool in my garage for a fairly low price. All good.
Dwayne j.
2025-05-28 13:45:26
Used for car audio made my voltage stay above 15v but started giving me problems about week 4 not long after it completely stopped working
Angelena Evans Headlee
2025-04-19 21:37:22
I can't build one for this price. Works exactly as it should. Keep in mind this is not a motor driver this is a signal generator to control pulse to a motor driver. I've had excellent results with this unit.
Mayzanhim33
2025-03-31 11:12:20
Finally had some time off to work on my project. Open up my package and got a broken unit. Returned! Hope the next one is better. So one star for now. Until the other one gets here.
Mario Garcia
2025-01-12 15:27:06
I don't work well
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