Square Wave Pulse Generator Module NE555 - Adjustable Frequency & Duty Cycle

  • Was  RM13.00 
  • RM6.00

  • Product Code: NE555 module
  • Availability: In Stock



  • Work as a square wave signal generator, generates a square wave signal used for experimental development.
  • Used to drive a stepper motor for generating a square wave drive signal.
  • Generate adjustable pulse for MCU.
  • Generate adjustable pulse,to control circuitry associated.


  • Main chip: NE555
  • Input Voltage: 5V-15VDC
    • When power supply is 5V , the output current is 15mA
    • When power supply is 12V , the output current is 35mA
  • Input current: >=100MA
  • Output amplitude: 4.2V V-PP to 11.4V V-PP. (Different input voltage, the output amplitude will be different)
  • Maximum output current:
    • >=15MA (5V power supply, V-PP greater than 50%)
    • >=35MA (12V power supply, V-PP greater than 50%)
  • Output with LED indication (low level ,LED will on; high level,LED will off;low frequency, the LED flashes)
  • Size: 31mm * 22mm


The output frequency range options by selecting jumper:

Frequency Output
1Hz ~ 50Hz 0.001uF
50Hz ~ 1kHz 0.1uF
1KHz ~ 10kHz 1uF
10kHz ~ 200kHz 100uF

T = 0.7(RA+2RB)C
RA, RB is the frequency

The output duty cycle can fine-tune;duty cycle and frequency is not separately adjustable; adjusting the duty cycle will change the frequency


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