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PROJECT DESCRIPTION

The main scope of this project is to control a load for short-time duration by using a 555 timer and a touch-sensitive switch.

The 555 timer is triggered by a touch plate connected to its trigger pin. The output of the 555 delivers logic high for a fixed time interval as decided by the RC time constant connected to the mono stable wired timer. This output drives a relay which in turn switches on the load for that duration after which it switches off automatically. Human body induced mains supply develops a voltage on the touch plate to trigger the timer.

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
Touch Switch for Short Duration Load
Hardware Requirements
  • Resistors
  • Capacitors
  • Diodes
  • 555 Timer
  • Relay
  • Lamp
Software Requirements
    None
Q & A
Q:  In which mode 555-timer works?
A:  555 timer works in monostable mode
Q:  What is touch control load switch?
A:  One can switch the load on and off by using a touch plate.
Q:  What is the principle?
A:  The principle behind the project is using 555-timer with RC time constant
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.
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Average Rating
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Showing 1 of 1 reviews
aditya ranjan, ghaziabad on 12th November, 2015, 07:16 PM

We got this website edgefx through one of my friend.
I like the soft copy explanation which has been taken from my friend,that’s why i was ready to take the project from here.
got it through online purchase.

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