NE555 Pulse Frequency Duty Cycle Adjustable Module

NE555 Pulse Frequency Duty Cycle Adjustable Module is a versatile square wave signal generator designed for electronic development and prototyping. This module utilizes the classic NE555 timer IC to produce a steady stream of pulses with adjustable parameters. Consequently, users can precisely control both the output frequency and the duty cycle using the two multi-turn potentiometers integrated onto the board. Furthermore, the inclusion of a four-position jumper allows you to switch between different frequency ranges, offering extreme flexibility for various timing requirements. Therefore, this compact module serves as an ideal solution for driving stepper motors, generating clock pulses for digital circuits, or testing PWM-controlled devices.

Key Features:

• Adjustable Output: The module features independent potentiometers to fine-tune the output frequency and the duty cycle ratio.
• Multiple Frequency Ranges: A built-in jumper allows users to select between four distinct frequency bands, ranging from 1 Hz up to 200 kHz.
• Onboard Indicators: An integrated LED provides visual feedback of the output signal; specifically, the LED flashes at low frequencies and changes intensity at higher frequencies.
• Stable Signal Generation: The highly reliable NE555 chip ensures a consistent square wave output even under varying load conditions.
• Wide Input Voltage: This module operates efficiently across a broad 5 V to 15 V power range, making it compatible with most microcontrollers and industrial power supplies.

Technical Specifications:

• Input Voltage (VCC): 5 V to 15 V DC
• Input Current: ≥ 100 mA
• Output Amplitude: 4.2 V to 11.4 V (Varies based on input voltage)
• Maximum Output Current: ≈ 15 mA (at 5 V) to 35 mA (at 12 V)
• Low Frequency Range: 1 Hz to 50 Hz
• Medium Frequency Range: 50 Hz to 1 kHz
• High Frequency Range: 1 kHz to 10 kHz
• Ultra-High Frequency Range: 10 kHz to 200 kHz

Mechanical Specifications:

• Main Controller: NE555 Precision Timer IC
• PCB Material: High-quality FR4 double-sided board
• Potentiometer Type: 3296 Multi-turn Trimpots for precision adjustment
• Mounting: Four 3 mm mounting holes for easy installation into enclosures.

Dimensions:

• Module Length: ≈ 31.0 mm
• Module Width: ≈ 22.0 mm
• Module Height: ≈ 15.0 mm
• Weight: ≈ 7.0 g

Pinout and Wiring:

• VCC: Connect to the positive power supply (5 V – 15 V DC).
• GND: Connect to the common ground (0 V).
• OUT: Output square wave signal to your target circuit or load.
• Note: However, always ensure the input voltage does not exceed 15 V to prevent damage to the NE555 IC and the filter capacitors.

Datasheet Reference:

• Download NE555 Timer IC Datasheet

Commonly Used in:

• Stepper Motor Control: Generating the necessary step pulses for motor drivers in CNC or 3D printing applications.
• LED Dimming: Providing a PWM signal to control the brightness of high-power LEDs.
• Digital Prototyping: Serving as a master clock source for breadboard-based logic circuits.

Applications:

• PWM Signal Generation: Consequently, this module is widely used for DC motor speed control via external power transistors.
• Frequency Synthesis: Producing reference frequencies for audio equipment testing and calibration.
• Educational Tools: Demonstrating the principles of oscillation and signal modulation in laboratory settings.

Equivalent Models:

• XY-LPWM: A digital PWM generator module featuring an LCD display for more precise frequency setting.
• LM358 Pulse Module: Uses an operational amplifier for signal generation, however, it generally offers less current drive than the NE555.
• AD9833 DDS Module: A high-precision programmable waveform generator for sine, triangle, and square waves.

Package Includes:

• 1 x NE555 Pulse Frequency Duty Cycle Adjustable Module