Time Delay Based Relay Operated Load


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*100% Working Project
*Project Report and PPT included
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The project is designed to develop a time delay based switch to control any load.? A 555 timer is used in mono stable mode to drive a relay to switch ON/OFF a load for fixed time duration.

A time delay based relay is a relay that stays on for a certain period of time once activated. This circuit is made up of a simple adjustable timer circuit which controls the actual relay.

The time is adjustable from 0 to few seconds but can be increased by increasing the time constant of the mono-stable 555-timer. The current handling capacity of the load is limited by the kind of relay used. The project is offered with a lamp as a load.

Hardware Requirements

  • Resistors
  • Potentiometer
  • Capacitors
  • Diodes
  • Relay
  • Timer IC
  • Lamp

Software Requirements




Q.What is the validity of the course?
Ans: It will be valid till one month from date of registration.
Q. Will the course cover hardware description?
Ans: Yes. It will cover hardware too.
Q. How many times lectures can be watched?
Ans: You can access a video lecture n no. of times during validity of your course.
Q. Will I get the certificate after completion of my course?
Ans: Yes every candidate will be awarded with certificate of training within two weeks after completion.
Q. Can I use this website in my mobile phone?
Ans: Yes but pc mode will be preferable for better understanding.
Q. Can we learn from other user registration id?
Ans: No. because we will trace the IP address of your pc, laptop, mobile if it is found unmatched with the registered id, registration will cancelled automatically and user will debarred from all services including certification.
Q: Will we get software package.
Ans: Yes u will get software package before proceeding to tutorials with how to install notes.

Block Diagram