electronic electroscope
ELECTRONIC ELECTROSCOPE
Abstract— An electroscope is the instrument used to detect charged bodies. Here, an electronic version of the scope that is more sensitive as compared to its conventional counterpart and which helps indicate the polarity of charge has been described. This circuit consumes very low quiescent power and reliably indicates charge induction and detection. The polarity of charge is indicated through LEDs (green LED indicates positive and red LED negative).
In this project report, the detailed circuit diagram of the electronic electroscope has been given in which dual timer IC556 and two input NAND gate IC CD4011 have been used followed by its working in which few observations with regards to the glowing of the LEDs have been made. This is followed by the explicit mention of the applications of electronic electroscope. A list of important components that form an integral part of this project topic has been made.
1.Introduction
In most experiments dealing with static electricity, an electroscope is required to indicate the presence of small amounts of positive or negative charge in laboratories, gold leaf electroscopes being one of them. However, these gold leaf electroscopes may be too delicate and costly for the average home experiments. An alternative to this is the electronic electroscope which is not only rugged and inexpensive,but is as sensitive as the gold leaf electroscope.
An electronic version of the scope is more sensitive as compared to its conventional counterpart and helps indicate the polarity of charge in any charged body.
In Section 2, the circuit diagram as well as the pcb layout of the electronic electroscope has been given. In Section 3, the working of the circuit has been explained in detail along with some important observation. Section 4
Abstract— An electroscope is the instrument used to detect charged bodies. Here, an electronic version of the scope that is more sensitive as compared to its conventional counterpart and which helps indicate the polarity of charge has been described. This circuit consumes very low quiescent power and reliably indicates charge induction and detection. The polarity of charge is indicated through LEDs (green LED indicates positive and red LED negative).
In this project report, the detailed circuit diagram of the electronic electroscope has been given in which dual timer IC556 and two input NAND gate IC CD4011 have been used followed by its working in which few observations with regards to the glowing of the LEDs have been made. This is followed by the explicit mention of the applications of electronic electroscope. A list of important components that form an integral part of this project topic has been made.
1.Introduction
In most experiments dealing with static electricity, an electroscope is required to indicate the presence of small amounts of positive or negative charge in laboratories, gold leaf electroscopes being one of them. However, these gold leaf electroscopes may be too delicate and costly for the average home experiments. An alternative to this is the electronic electroscope which is not only rugged and inexpensive,but is as sensitive as the gold leaf electroscope.
An electronic version of the scope is more sensitive as compared to its conventional counterpart and helps indicate the polarity of charge in any charged body.
In Section 2, the circuit diagram as well as the pcb layout of the electronic electroscope has been given. In Section 3, the working of the circuit has been explained in detail along with some important observation. Section 4