Product Description

Adjustable PWM Pulse Frequency Duty Cycle Module

Module highlights:

1. LCD with casing displays the frequency and duty ratio very clearly, and the PWM output can set the frequency and duty ratio respectively

2. Wide frequency range and high precision

3. Serial communication is possible


Description:

PWM output, which can set frequency and duty ratio respectively;

The frequency is divided into four ranges and automatically switched:

1. XXX (without decimal point): the minimum unit is 1Hz, and the value range is 1Hz~999Hz;

2. The minimum unit of X.XX (decimal point is 100 digits) is 0.01KHz, and the value range is 1.00 kHz ~ 9.99 kHz;

3. XX.X (decimal point in ten digits): the minimum unit is 0.1KHz; Values range from 10.0 KHz to 99.9 KHz.

4. X.X.X (decimal point in ten and one hundred): the minimum unit is 1KHz; Values range from 1KHz~150KHz.

E.g. frequency display: 100 means PWM outputs 100Hz pulses;

1.01 means PWM outputs a pulse of 1.01K;

54.1 means PWM outputs 54.1KHz pulses;

1.2.4 means PWM outputs 124KHz pulses;

Duty cycle value range: 0 ~ 100%;


Parameter:

The module has 4 independent buttons to set the frequency and duty ratio, and supports short press (increase or decrease by one unit) and long press (increase or decrease rapidly). It is very simple, and the parameters are automatically saved after setting, and will not be lost in case of power failure.

1. working voltage: 3.3~30V;;

2. Frequency range: 1Hz ~ 150 KHz;

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: PWM amplitude is equal to the power supply voltage;

6. Ambient temperature: -20~+70℃.


Scope of application:

1. used as a square wave signal generator to generate square wave signals for experimental development;

2. Used to generate a square wave signal for controlling the motor driver;

3. Generate adjustable pulse for MCU;

4. Generate adjustable pulses to control related circuits (PWM dimming and speed regulation, etc.).

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