In the above calculations, the LED will be turned ON after the calculated time duration. Similarly, the LED will be OFF when the output Pin3 of 555 Timer IC is set to High. Related Project: Clap Switch Circuit Using IC 555 Timer.Step by StepĬollect the below-mentioned components to design the timer circuit of different time duration: Related Project: PCB Design of LED Flasher Circuit using 555 Timer.It can be used in power supplies and converters etc.IT can be used in tone generation or logic clocks.It can be used in LED or flash lamps to turn the lamp on for a specified time.It can be used in one-shot or delay timers to produce a time delay.Related Post: Simple Touch Sensitive Switch Circuit using 555 Timerĥ55 Timer IC is a useful precision timing device produces single pulses or as an oscillator producing a string of stabilized waveform of any particular duty cycles.The output from flip flop can be used to control a high current output switching stage to drive the connected load producing High or Low level at the output pin. The output of both the comparators is connected to the input of flip-flop to produce either a “High” or “Low” logic output based on the states of Input. The voltage difference is determined by the externally connected RC network. The two comparators produce an output voltage that depends upon the voltage difference at their input. This produces a voltage divider network at Pin 8 and Pin 1. There are three 5K ohm resistors connected together internally. Let’s see the internal circuitry of the 555 Timer IC to get a better idea of its working principle: 555 Timer IC can be mainly configured in three different states namely A-Stable multi-vibrator, Mono-Stable multi-vibrator, and Bi-Stable multi-vibrator.
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