555 timer ic_tesitngcircuit
- 1. ORIENTAL COLLEGE OF TECHNOLOGY 555TIMERICTESTINGCIRCUIT Minor Project Progress Presentation I Electronics & Communication B-TECH, 5-SEM 1 2021-22 Chetan Borban (0126EC191019) Nitish Singh (0126EC191036) Shobhit Singh(0126EC101953) Vidya S. Singh(012EC101958) Saarthak Lakhani(0126EC191047) Piyush Jain
- 2. 2021-22 2 I. About Project II. Objective III. Required Components IV. Description on component V. Circuit Diagram & Pin Diagram VI. About Methodology VII. Application / uses this Circuit VIII. Work Plan IX. Reference
- 3. The 555 Timer IC is one of the most popular and most frequently used integrated circuits. It performs an array of timing tasks in the electronic circuits. But before using the 555 Timer IC, check it’s whether, it is working properly or not. 3 2021-22 So, we are design a simple circuit that can be used as a 555 Timer IC Testing Circuit and determine whether the 555 IC is functioning or not.
- 4. Our objective is very clear, We are making a basic circuit with help the of (active and passive ) components/elements which help the testing 555 timer IC. 555 Timer IC is that it has three modes of operation: Astable, Monostable and Bistable. The circuit implemented in this project is basically an Astable Mode of operation of the 555 Timer IC. 4 2021-22
- 5. 555 IC 2 X 10KΩ Resistors 2 X 1KΩ Resistors 47μF Capacitor (Electrolytic) 0.01μF Capacitor (Ceramic Disc) 2 X LEDs 12V Power Supply 5 2021-22
- 6. 6 2021-22 We are using two type Resistor. 2*1KΩ and 2*10Ω, 1KΩ using for ‘LED’ and 10KΩ using for IC. We are using two type capacitor. 47μF (Electrolytic) and 0.01μF (Ceramic Disc) for voltage control. We are using two LED light for indication. We should 5V to 12V power for our circuit, So we can use 9V power supply. Ex: - Battery, Mobile Charger etc. 555 Timer IC is main element/ component of our project. It have 8-PIN, Dual-in-line Package (DIP). The 555 timer can be operated at a wide range of power supplies ranging from 5 V to 18 V.
- 7. 7 2021-22
- 8. PIN-1 Ground reference voltage (low level 0V). All the voltages are measured with respect to this terminal. PIN-2 It is responsible for SET and RESET transitions of the flip-flop. PIN-3 Output driven waveform is available at this pin. It is driven to 1.7 V below VCC. Two types of loads can be connected to the output. PIN-4 A negative pulse on this pin will disable or reset the timer. The timer will begin only when the voltage on this pin is above 0.7 V and hence it is normally connected to VCC when not used. PIN-5 It controls the threshold and trigger levels and hence the timing of the 555. The width of the output pulse is determined by the control voltage. PIN-6 The voltage applied at this terminal is compared with a reference voltage of 2/3 VCC. When the voltage at this terminal is greater than 2/3 VCC, the flip-flop is RESET and the output falls from High to Low. PIN-7 It is connected to the open collector of the internal NPN transistor which discharges the timing capacitor. When the voltage at this pin reaches 2/3 VCC, the output toggles from high to low. PIN-8 A supply voltage in the range of 5V to 18V is applied to this terminal. 8 2021-22
- 9. 9 2021-22 In this circuit, We have used the 555 IC as an Astable multivibrator and when power is provided to circuit, the LEDs will start blinking, which means that the IC is working. The blinking rate of LEDs can be changed by increasing or decreasing the values of resistor R1 and R2 and capacitor C1. Formula ON Time (HIGH) in Seconds = 0.693 * (R1 + R2) * C1 OFF Time (LOW) in Seconds = 0.693 * R2 * C1 Total Time Period in Seconds = 0.693 * (R1 +2R2)*C1 Frequency = 1.44 / ((R1 + 2R2) * C1) Accordingour circuit(Resistors,Capacitorsand Power Supply.) Frequency = 1.023 Hertz ON Time = 0.651 Seconds OFF Time = 0.326 Seconds Time Period = 0.977 Seconds
- 10. 1 0 2021-22 Case-1 Now to see the result, switch on the power supply. If our 555 Timer IC is working properly, then both the LEDs (Red LEDs in my case) will glow alternately. Case-2 If any of the LED is OFF or both the LEDs are not glowing, it means that our 555 timer IC is faulty. We will receive two different types of Case
- 11. 1 1 2021-22 Square Wave Generation Pulse Position Modulation Pulse Train Frequency Modulation using Astable Multivibrator Note: - our 555 testing IC circuit is used in this application
- 12. 1 2 2021-22 S. NO. PARTICUAL DURATION OUTCOME 1 Literature Survey 20-Sep-2021 Study about the 555 Timer IC Testing circuit 2 Components Identification 26-Sep-2021 Identify Components to be required in project 3 Layout Plane/ Circuit Diagram 02-Oct-2021 Design of layout of electronics circuit 4 Assembler Components 05-Oct-2021 Purchase Components form Market. 5 Progress Presentation-1 11-Oct-2021 Represent project details in ppt and report.
- 13. 1 3 2021-22 About 555 Timer IC: - From: - Tutorialspoint.com From:- CircuitsToday.com Project Idea From: - CircuitsToday.com PCB Design and simulation From: - CircuitLab.com