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|
|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.
|Input Voltage||5V-15V DC|
|Output Amplitude||4.2V V-PP to 11.4V V-PP|
|Max. Output Current||≥15mA|
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