PWM Signal Generator 1Hz–150KHz Adjustable Frequency & Duty Cycle
PWM Signal Generator 1Hz–150KHz Adjustable Frequency & Duty Cycle
PWM Signal Generator Module — Adjustable Frequency & Duty Cycle (1Hz–150KHz)
Take precise control of your electronics projects with this compact PWM (Pulse Width Modulation) Signal Generator Module. Whether you're working on motor speed control, LED dimming, servo testing, or any microcontroller-based project, this module delivers clean, stable square-wave output with independently adjustable frequency and duty cycle — all in a pocket-sized form factor.
Key Features
- Wide Frequency Range: Output spans 1Hz to 150KHz in four auto-switching ranges for maximum versatility
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Frequency Ranges Explained:
- 1Hz–999Hz — smallest unit: 1Hz (displayed as X.XXX, no decimal point)
- 1.00KHz–9.99KHz — smallest unit: 0.01KHz (decimal point at hundreds position)
- 10.0KHz–99.9KHz — smallest unit: 0.1KHz (decimal point at tens position)
- 100KHz–150KHz — upper range for high-frequency applications
- Independent Frequency & Duty Cycle Adjustment: Set each parameter separately for total waveform control
- Compact & Convenient: Dimensions: 7.8 × 4.2 × 2.6 cm (3.07 × 1.65 × 1.02 in) — fits easily into any project enclosure or breadboard setup
- Ready to Use: Simple plug-and-play design, no complex setup required
Ideal Applications
- DC motor speed control
- LED brightness dimming
- Servo motor testing
- Microcontroller (Arduino, Raspberry Pi) signal generation
- Inverter and power supply testing
- DIY electronics and prototyping labs
Specifications
| Frequency Range | 1Hz – 150KHz |
| Duty Cycle | Independently adjustable |
| Output Type | PWM square wave |
| Dimensions | 7.8 × 4.2 × 2.6 cm / 3.07 × 1.65 × 1.02 in |
For safety guidance when working with electronic modules and DIY circuits, refer to CPSC Electrical Safety guidelines.
Frequently Asked Questions
Q: What is a PWM signal generator module and what can I use it for?
A: A PWM (Pulse Width Modulation) signal generator module produces a square-wave output signal with a precisely adjustable frequency and duty cycle. It is widely used in electronics projects for controlling DC motor speed, dimming LEDs, testing servo motors, and providing clock or trigger signals for microcontrollers such as Arduino or Raspberry Pi boards.
Q: What frequency range does this PWM generator cover?
A: This module covers a wide range from 1Hz up to 150KHz, automatically switching between four display/resolution bands: 1Hz–999Hz, 1.00KHz–9.99KHz, 10.0KHz–99.9KHz, and up to 150KHz. Each band provides the appropriate resolution for accurate tuning across the full spectrum.
Q: Can I adjust the frequency and duty cycle independently?
A: Yes. One of the standout features of this module is the ability to set the output frequency and the duty cycle (on/off ratio) completely independently of each other. This gives you fine-grained control over your PWM waveform without one parameter affecting the other.
Q: What are the dimensions of this PWM module?
A: The module measures 7.8 × 4.2 × 2.6 cm (approximately 3.07 × 1.65 × 1.02 inches), making it compact enough to integrate into DIY enclosures or sit neatly on a workbench alongside your other prototyping equipment.
Q: Is this module suitable for beginners?
A: Yes. The module is straightforward to set up and use, making it accessible for hobbyists and beginners as well as experienced electronics engineers. It requires no complex configuration — simply power it up, adjust the controls, and connect the PWM output to your target circuit.