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PROJECT DESCRIPTION

The main intention of this project is to detect a telephone ring in noisy environments and provide a visual indication by a flasher to the user for easy identification of incoming calls. This system is quite useful in some places wherein hearing telephone ring is difficult; for instance, workshops and factories.

 The phone line is connected to the circuit. This circuit is developed using an opto-isolator and an electromechanical relay to switch on/off the lamp driven by a transistor. This concept can be extended in future and implemented in the real-time scenarios.

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
Telephone Ring Sensed Flasher in Industrial Area
Hardware Requirements
  • Opto-Isolator
  • Transistor
  • Resistors
  • Capacitors
  • Diodes
  • Relay
Software Requirements
    None
Q & A
Q:  Where is it used?
A:  It is used at shopping mall, theaters, hotels, where automatic door opening is required
Q:  What is incoming phone ring light flasher?
A:  It gives a visual indication whenever the phone rings.
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.
Q:  What to do when the lamp fails and what is the maximum lamp rating that can be used?
A:  If the lamp fails one can use any lamp or bulb which is used in homes up to 100W. We suggest you to go for low watt bulbs.
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Hyderabad - 500029,
Telangana, India
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