NE555 Adjustable Pulse Frequency Duty Cycle Module

This NE555 square wave pulse generator module can be used to produce square wave signals for experimental development, 5V to 15V DC and draws approximately 15mA at 5V (35mA at 12V)

$7.95

10 in stock


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SKU: TS-P1209
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The NE555 Adjustable Pulse Frequency Duty Cycle Module can produce square wave signals for experimental development or applications such as driving stepper motors and as an adjustable pulse for microcontroller (MCU) applications.

Specifications:
  • Main chip: NE555
  • Input Voltage (VCC): 5V-15VDC
  • Input Current:~100MA
  • Output Amplitude: 4.2V V-PP to 11.4V V-PP. (Varies with VCC voltage)
  • Maximum Output Current: 15MA (VCC=5V, V-PP greater than 50%), 35MA (VCC=12V, V-PP greater than 50%).
  • Output LED indicator (low level, LED is on, high level, LED is off; LED flashes with Frequency. When the frequency is higher than about 30Hz, the LED will always appear to be on since the blinking is too fast to see.
  • A 4-row x 2-pin header provides jumper settings to select different frequency ranges. The jumper connects different value capacitors to change the circuit’s RC time constant. The multi-turn potentiometer near the frequency range jumper provides fine control over the frequency once the range is set.
  • Jumper settings are:
    • ~1Hz ~ 40Hz
    • ~40Hz ~ 500Hz
    • ~500Hz ~ 40kHz
    • 40kHz ~ >200kHz
  • The jumper ranges will vary between modules depending on the components’ tolerances.
  • The output duty cycle can fine-tuned using the onboard potentiometers. The duty cycle and frequency are not separately adjustable; adjusting the duty cycle will change the frequency.
  • The output frequency and duty cycle are adjusted using the following variables:
    • Period T = 0.7 (RA +2 RB) C
    • RA, and RB are 0-10K Ohm Adjustable Potentiometers
    • 1Hz ~ 50Hz: C = 0.001UF
    • 50Hz ~ 1kHz: C = 0.1UF
    • 1KHz ~ 10kHz: C = 1UF
    • 10kHz ~ 200kHz: C = 100UF
  • Size: 31mm * 22mm(1.2″ x 0.9″)

 

Package Includes:
  • NE555 Adjustable Delay Timer Relay Module

 

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Notes:
  1. There may be slight size deviations due to manual measurement and different measuring methods.
  2. The picture may not reflect the actual colour of the item because of different photography lights, angles and display monitors.
Weight 7.95 kg
Dimensions 7 × 2.5 × 1.9 cm


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