Leakage Current Indicator
LCI
Leakage Current Indicator
SABYASACHI BHOWMIK CONTENTS :
1. Introduction 2. What is LCI ? 3. Working procedure of lci. 4. Circuit diagram 5. Claims.
Introduction
In our daily life, we use lots of electrical objects, such as, air cooler, electric fans, etc. In those objects, if there is leakage current, means, if a short circuit is made there, then the leakage current may cause a lot of harm to us. If unknowingly anyone touches the body of that object, definitely he will experience a shock, that can make question to his life also.
To prevent these types of accidents, we have developed a circuit, called LCI ( Leakage Current Indicator), which will alert us when there are some leakage currents.
WHAT IS LCI ?
LCI or Leakage Current Indicator is a circuit that alerts us if there is any leakage current in our electrical object. It is made of some cheap and simple components, so that, everyone can afford it. It`s equipments are cheap and available in our markets.
LCI is a system that will be placed in touch with our electrical object, connected directly with the neutral wire. If there is any leakage current, then it will act as phase to LCI, and it will start alarming us.
Working procedure of lci
The present invention uses a combination of resistances and capacitance to limit the level of AC leakage current present in the metal body of electric appliances. The output of current limiting circuit is then fed to a Bridge rectifier which converts AC into DC. Then DC output of Bridge rectifier is used to drive the audio-visual alarm circuit, connected in parallel. Audio alarm circuit uses a buzzer while visual alarm circuit uses a light emitting diode (LED) connected in series with current limiting resistance. Both, audio and visual alarm circuits provide a leakage current alarm (audio-visual) indication, which is proportional to the
Leakage Current Indicator
SABYASACHI BHOWMIK CONTENTS :
1. Introduction 2. What is LCI ? 3. Working procedure of lci. 4. Circuit diagram 5. Claims.
Introduction
In our daily life, we use lots of electrical objects, such as, air cooler, electric fans, etc. In those objects, if there is leakage current, means, if a short circuit is made there, then the leakage current may cause a lot of harm to us. If unknowingly anyone touches the body of that object, definitely he will experience a shock, that can make question to his life also.
To prevent these types of accidents, we have developed a circuit, called LCI ( Leakage Current Indicator), which will alert us when there are some leakage currents.
WHAT IS LCI ?
LCI or Leakage Current Indicator is a circuit that alerts us if there is any leakage current in our electrical object. It is made of some cheap and simple components, so that, everyone can afford it. It`s equipments are cheap and available in our markets.
LCI is a system that will be placed in touch with our electrical object, connected directly with the neutral wire. If there is any leakage current, then it will act as phase to LCI, and it will start alarming us.
Working procedure of lci
The present invention uses a combination of resistances and capacitance to limit the level of AC leakage current present in the metal body of electric appliances. The output of current limiting circuit is then fed to a Bridge rectifier which converts AC into DC. Then DC output of Bridge rectifier is used to drive the audio-visual alarm circuit, connected in parallel. Audio alarm circuit uses a buzzer while visual alarm circuit uses a light emitting diode (LED) connected in series with current limiting resistance. Both, audio and visual alarm circuits provide a leakage current alarm (audio-visual) indication, which is proportional to the