NE555 Pulse Frequency Duty Cycle Adjustable Module

NE555 Pulse Frequency Duty Cycle Adjustable Module is a compact and easy-to-use signal generator based on the NE555 timer IC. It is widely used for generating square waves with adjustable frequency and duty cycle, suitable for LED dimming, motor control, buzzer drivers, and other timing-related applications.

Key Features:

• Adjustable Frequency: Fine-tune pulse frequency via onboard potentiometer.
• Duty Cycle Control: Allows independent adjustment of duty cycle for flexible waveform output.
• Wide Operating Voltage: Operates from 4.5V to 12V DC for broad application use.
• Compact Design: Small PCB size ideal for embedding in DIY circuits or testing jigs.
• Dual Potentiometers: One for frequency control and the other for duty cycle tuning.

Technical Specifications:

• Operating Voltage: 4.5V to 12V DC
• Frequency Range: Approx. 1Hz to 200kHz (adjustable)
• Duty Cycle: 1% to 99% (adjustable)
• Output Voltage: Square wave, 0V to VCC
• Load Capacity: Can drive small relays, LEDs, transistors, etc.
• PCB Dimensions: Approx. 32mm × 22mm

Mechanical Specifications:

• IC Type: NE555 Timer
• PCB Material: FR4, red solder mask
• Terminals: 3-pin header for GND, VCC, and OUT
• Mounting: Two mounting holes for screw-based enclosure or PCB fixing

Pinout and Wiring:

• GND: Connect to ground
• VCC: Supply voltage (4.5V to 12V DC)
• OUT: Square wave output
• Potentiometer 1: Adjusts frequency
• Potentiometer 2: Adjusts duty cycle

Datasheet and Documentation:

• Download NE555 Datasheet (PDF)

Applications:

• PWM Signal Generation: Use for dimming LEDs or controlling motor speeds.
• Frequency Testing: Quick square wave source for testing other circuits.
• Buzzer Drive Circuit: Generate tone pulses to activate buzzers.
• Oscillator Circuits: Used in timing and delay applications in DIY kits.
• Learning Tool: Great for understanding NE555 operation and waveform tuning.

Equivalent Modules:

• CD40106 Pulse Generator Module: Schmitt trigger based alternative
• 555 Dual Timer Board: Extended version with two independent outputs
• XY-LPWM: Digital PWM module with display and fine tuning

Package Includes:

• 1 x NE555 Pulse Frequency Duty Cycle Adjustable Module