NE555 Pulse Frequency Duty Cycle Adjustable Module

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Description

The NE555 Square Wave Signal Generator is a 5V square wave signal generator with adjustable pulse frequency and duty cycle. It produces a square wave signal that is used in research and development projects. Use to generate a square wave drive signal by driving a stepper motor. It is possible to fine-tune the output duty cycle. The duty cycle and frequency cannot be adjusted separately; changing the duty cycle will change the frequency.

Frequency Select Jumper Ranges

Jumper Position Low Freq High Freq
1-L 1Hz 27Hz
2 9Hz 470Hz
3 680Hz 32kHz
4 – H 68kHz 500kHz

 

The Duty Cycle adjustment potentiometer is located near the LED and allows you to change the output's duty cycle. The duty cycle describes how long the output is driven high compared to how long it is driven low. Turning the pot counterclockwise decreases the length of time the output is low while increasing the amount of time it is high (increases duty cycle).

Especially at low frequencies, the duty cycle is best stable around 50% or higher (high period is 50% or longer). The output will go to a continuous low if the duty cycle is set too low.

Specifications
Main IC NE555
Input Voltage 5V-15V DC
Input Current ≥100mA
Output Amplitude 4.2V V-PP to 11.4V V-PP
Max. Output Current ≥15mA
Size 31x22.2x14.8mm

 

FAQs

Frequently Asked Questions

What does 555 mean in NE555?

555 The 555 timer is named after the three 5k resistors that are connected internally making a voltage divider circuit.

What is a 555 timer?

555 It is an integrated circuit that provides a square wave output signal. It is used to add delay/timing in electronic circuits.

What is 555 timer ic and where is it useful?

555 NE555 is a precision timing device that can act as either a simple timer to generate single pulses or long time delays. This IC can operate in either of the three modes 1. Monostable mode 2. astable mode 3. Bistable mode

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