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electronic engineer
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When Operating NE555 as astable vibrator
In how many ways can we make the ON pulse exactly equal to OFF pulse?
In how many ways can we make the ON pulse exactly equal to OFF pulse?
If the 50% duty cycle is important to you, just run the 555 at 2x frequency, and add a divide-by-2 flipflop after the 555. Or use a better oscillator than the 555.electronic engineer said:but i don't know how to get exactly 50% duty cycle (Mark=Space)
An astable vibrator is a type of electronic oscillator circuit that generates a continuous stream of output pulses without the need for external triggering. It is commonly used in electronic devices such as timers, alarms, and LED flashers.
The NE555 is a popular integrated circuit (IC) that can be configured as an astable vibrator. It consists of two comparators, a flip-flop, and a discharge transistor. By connecting external resistors and capacitors to these components, the NE555 can produce a continuous output waveform.
The NE555 is a versatile and inexpensive IC that can be easily configured as an astable vibrator. It has a wide operating voltage range and can drive a variety of output loads. Additionally, it has a high level of stability and can produce accurate output frequency.
The key components needed to operate the NE555 as an astable vibrator are two external resistors, an external capacitor, and a power supply. The resistors and capacitor determine the output frequency, while the power supply provides the necessary voltage for the IC to function.
Yes, the output frequency of the NE555 astable vibrator can be adjusted by changing the values of the external resistors and capacitor. The formula for calculating the output frequency is f = 1.44 / ((R1 + 2*R2) * C), where R1 and R2 are the values of the resistors in ohms, and C is the value of the capacitor in farads.