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PROJECT DESCRIPTION

The project is designed to develop a time delay based switch to control any load. A 555 timer is used in monostable 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.

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Non-Microcontroller Project.
Branding-free material.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
Time Delay Based Relay Operated Load
Hardware Requirements
  • Resistors
  • Potentiometer
  • Capacitors
  • Diodes
  • Relay
  • Timer IC
  • Lamp
Software Requirements
    None
Q & A
Q:  What is time delay based relay operated load?
A:  It is controlling the switching of load, as per the time decided by the RC time constant of the 555 timer.
Q:  What is the principle?
A:  The principle behind the project is using 555-timer with RC time constant
Q:  In which mode 555-timer works?
A:  555 Timer works in monostable mode
Q:  What is the formula for calculating smoothing capacitor value?
A:  There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.
READ WHAT OTHERS HAVE SAID
Average Rating
 4.4/5
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Showing 4 of 8 reviews Show All
Naimish dervaniya, Junagadh on 21st July, 2016, 06:32 PM

I have refered by my lab assistant and also by my professors
Because of soft copy and by seeing circuit diagram
i have solved the technical issues
I received right components

FAAIZ NAJUIB, SRINAGAR on 16th November, 2015, 06:24 PM

I got to know about Edgefx while I was searching for projects in Google.
Since Edgefx is providing Readymade kit.
Purchased through online.
keep doing the same work.

Kanishk bhardwaj, Delhi on 13th June, 2015, 04:12 PM

My friend suggested taking the kit from Edgefx. I used the Keyword Edgefx.com in the Google.My friend said that quality will be good and I personally like the way of Assembled and it’s really presentable.Yes 1 day it was delayed I think it was due to courier.I purchased through online. The Delivery should be improved.

Kanishk bhardwaj, Delhi on 13th June, 2015, 01:01 PM

My friend suggested taking the kit from Edgefx. I used the Keyword Edgefx.com in the Google.My friend said that quality will be good and I personally like the way of Assembled and it’s really presentable.Yes 1 day it was delayed I think it was due to courier.I purchased through online. The Delivery should be improved.

Rating Breakdown (8 Reviews)
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