Enhancing 555 Timer Applications with Advanced RC Circuit Design

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Essay, Pages 4 (790 words)

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Objective

To design an extended operational amplifier 555 timer circuit with RC components for generating precise time delays and oscillations.

Introduction

One of the most flexible direct ICs is the 555 clock which was first presented in mid 1970 by Signetic Corporation giving the name as SE/NE 555 clock. This IC is a solid planning circuit that can create exact and profoundly stable time postponements or wavering. Like other regularly utilized operation amps, this IC is likewise especially solid, simple to utilize and less expensive in cost.

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It has an assortment of uses including monostable and astable multivibrators, dcdc converters, computerized rationale tests, waveform generators, simple recurrence meters and tachometers, temperature estimation and control gadgets, voltage controllers and so on. Theclock essentially works in one of the two modes either as a monostable (one-shot) multivibrator or as an astable (free-running) multivibrator.The SE 555 is intended for the working temperature run from – 55°C to 125° while the NE 555operates over a temperature scope of 0° to 70°C.

The important features of the 555 timer are:

It works from a wide scope of intensity supplies extending from + 5 Volts to + 18 Volts supply voltage.
Sinking or sourcing 200 mA of burden current.
The outside parts ought to be chosen appropriately with the goal that the planning interims can be made into a few minutes Proper determination of just a couple of outside segments permits timing interims of a few minutes alongside the frequencies surpassing a few hundred kilo hertz.
It has a high current yield; the yield can drive TTL.
It has a temperature solidness of 50 sections for each million (ppm) per degree Celsius change in temperature, or comparably 0,005 %/°C.
The obligation cycle of the clock is customizable with the most extreme power dissemination per bundle is 600 mW and its trigger and reset inputs are rationale good.

Method and Design

The 555 timer is commonly used to design and produce a difference output waveforms with addition of external RC network, The switching of the output waveform is achieved by controlling the trigger and reset input of 555 timer which held high by the two pull up resistors ,R1 and R2.

The output ( pin 3 ) standard of 555 timer has the potential to either skin or source however 555 timer to both sink or source its output load current that means output terminal can be connected both LED’S at same time but only one of them will be switch on depends output state high or low.

Apparatus:

Bread board
Wires
Power supply
Resistor 1=5k ohm
Resistor 2=5k ohm
Capacitor=0.213nf
Capacitor2=0.01nf
Voltage =5v
IC 555 timer
Oscilloscope

Simulation

Frist we use LT spice to apply our design using 555 timer oscillators.
We use two resistance and two capacitor one voltage
After that we run the program to find output and input waveform.

Calculation

The target frequency provided was 450kHz.

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Using the standard 555 timer formula for frequency:

F=ln(2)⋅(R1+2R2)⋅C11

Given:

R1=R2=5kΩ
C1=0.213nF
C2=0.01uF

The calculated frequency is approximately 450007Hz.

Results and Discussion

The assignment is covering square wave using 555 timer is one of several types of oscillator electronic constructed from transistor and positive feedback using the combination of frequency with capacitance determination. There are mainly two requirements in this assignment, the first one is frequency oscillator and the second one is output. After the construction of the circuit I have taken measurement for frequency oscillator.

We assume the value of R1= 5K, R2=5K and the capacitance C1= 0.213nF, C2=0.01uF after that we use the formula of 555 timers to calculate frequency oscillator successfully we found F=450007Hz.

Coming the simulation, we use LT spice software, we did our design for simulation part basing on square wave 555 timer. After that we take R1=5K, R2=5K and capacitance is same as previous value which means C1= 0.213nF, C2=0.01uF after this we draw the circuit and we start adding our values. Than we want to transient to set our stop time so we would get wave form we set into 90us because, then we run the program to get the exactly frequency, so from the wave forms to get it we had to drag to 1 duty cycle. The frequency that we got was approximately to our frequency we can analyses that in our simulated results. Then we did particle calculation to make sure our excrement is correct successfully we found exactly as u can see above figures.

Conclusion

The 555 timer IC demonstrates its versatility and practicality in electronic circuit design through this experiment. The successful design, calculation, and simulation of the extended op-amp 555 timer with an RC circuit showcased its capability to produce precise time delays and oscillations, affirming its value in educational and practical electronics applications.

References

https://www.electronics-tutorials.ws/opamp/opamp_1.html.
https://www.electroschematics.com/extended-period-555-on-pulse-timer/.

Enhancing 555 Timer Applications with Advanced RC Circuit Design. (2024, Feb 21). Retrieved from https://studymoose.com/document/enhancing-555-timer-applications-with-advanced-rc-circuit-design