Topic Touch On and Off Switch Circuit for electrical Machine 2

1. Presentation
Topic Touch On and Off Switch Circuit
Roll No: Rawaid 2334-2020 Junaid - 2020 –Syed Jawwad- 2020
Subject Electrical Machine Lab
Group Rawaid Hassan & Syed Jawwad Sultan Junaid ahmed
Submitted by Rawaid Hassan

2. What is a Touch ON and OFF Switch Circuit
• Touch ON and OFF Switch is
a type off switch that can be
used to control any
electrical or electronic
appliance.
• A touch switch is an
electronic device that
enables us to control a
circuit by simply touching a
sensor.

3. Components used in circuit Diagram
• Components Required
• 1 x 555 Timer IC
• 1 x 3.3 MΩ Resistor (1/4 Watt)
• 1 x 1 MΩ Resistor (1/4 Watt)
• 1 x Bulb with holder (regular or CFL)
• 1 x 5V Relay Module (if relay module is not
available, then you need the following
components)
555 Timer IC 3.3 MΩ Resistor Bulb with holder
5V Relay Module (if relay
module is not available, then you
need the following components
2N2222 NPN Transistor
1N4007 PN Junction Diode
1 KΩ Resistor (1/4 Watt

4. Circuit Diagram

5. How to make the Touch Sensor (Touch Plate)
 As the project is based on a Touch to ON and OFF the
devices, Touch Plates or Touch Sensors are an important
part of this project.
 We do not need costly or fancy touch sensors as we will
show you how to make a simple touch plate for this
project.

6. Applications
A simple Touch to ON and Touch to OFF Switch Circuit is designed in this
project using which, we can turn ON or OFF any device by simply touching
the pads.
By isolating the touch plates from the actual circuit, we can create a nice
looking touch controls for our appliances.

7. Presentation
END
Group Rawaid Hassan & Junaid ahmed
Submitted by Rawaid Hassan