is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider. If only two terminals are used‚ one end and the wiper‚ it acts as a variable resistor or rheostat. A potentiometer measuring instrument is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle‚ hence its name. German inventor Johann Poggendorff designed the first potentiometer in 1843 RESISTORS A resistor is a component of
Premium Electric current Resistor Magnetic field
Voltage Law. 3. Determine the voltages across each resistor in the series circuit using the voltage divider rule. Measure and verify the same using simulation. Use these values to also prove that the power delivered by the source is equal to the sum total of power dissipated
Premium Ohm's law Electric current Resistor
ECT 122 Week 1 iLab #3 Parts: Breadboard Handheld DMM DC power supply Test leads Resistor kit 1. List the functions available on the DM717 handheld digital multimeter (DMM). This meter can measure three basic electrical properties voltage‚ current and resistance. 2. What is the function of the COM connection? What color lead is placed in this connection? It’s the common ground and is used in all measurements. Black lead is placed in this connection
Premium Resistor Ohm's law Measurement
Wheatstone in 1843. One of the Wheatstone bridge’s initial uses was for the purpose of soils analysis and comparison.[1] ------------------------------------------------- Operation In the figure‚ is the unknown resistance to be measured; ‚ and are resistors of known resistance and the resistance of is adjustable. If the ratio of the two resistances in the known leg is equal to the ratio of the two in the unknown leg ‚ then the voltage between the two midpoints (B and D) will be zero and no current will
Premium Resistor Electrical resistance Electric current
Department needs to test large numbers of 1000-ohm resistors to an accuracy of ±5%. To save time‚ a PIC microcontroller based Resistance Tester is to be designed to do this job. In this essay‚ it provides a state diagram of the system‚ a circuit diagram which draw by Proteus and a C programming to show how it works. The basic design is to be based on a PIC16f818 which has a 10 bit Analogue to Digital Converter (ADC) that can be used to measure the resistor being tested. One way to measure resistance is
Free Resistor
FEG 1042 PHYSICS LAB V LABORATORY REPORT VI NAME : RAVEVARMEN ELANGGO ID. NO : 1000050 TITLE : KIRCHHOFF’S LAW DATE : 08/05/2013 LECTURER : MS. FATIN HANA NANING Objective To verify Kirchhoff’s Laws by comparing voltages obtained from a real circuit
Premium Ohm's law Voltage Resistor
An Investigation on Capacitance and RC circuit Hamdy Hamdy Abdel Moneim Abdou‚ Jaime Lorenzo C. Olivares‚ and Karol Giuseppe A. Jubilo National Institute of Physics‚ University of the Philippines‚ Diliman‚ Quezon City Abstract This experiment is designed to further the understanding of the relationship between voltage‚ charge‚ and capacitance of capacitors. This also explains how values of effective capacitance for series and parallel combinations of capacitors are
Premium Electric charge Inductor Resistor
Thermistor A thermistor is a type of resistor whose resistance varies significantly with temperature‚ more so than in standard resistors. The word is a portmanteau of thermal and resistor. Thermistors are widely used as inrush current limiters‚ temperature sensors‚ self-resetting overcurrent protectors‚ and self-regulating heating elements. Thermistors differ from resistance temperature detectors (RTD) in that the material used in a thermistor is generally a ceramic or polymer‚ while RTDs
Premium Resistor Temperature
ELECTRICAL ENGINEERING LABORATORY SESSION 1 Title: RESISTOR NETWORKS Name:Richard Lancaster Date: 11th Sep 2010.Student Name: Richard Lancaster. Id No: (09099972) Course: B.Sc. Engineering Science Subject: Electrical Engineering Lecturer: Dr Martin Hayes Objectives: 1. Introductory familiarisation with D.C measurements. 2. Introduction to the use of pSpice as a tool for emulating circuits. pSpice v9.1 can be downloaded from Moodle or via http://www.electronics-lab.com/downloads/schematic/013/
Premium Voltage Electrical resistance Resistor
In this lab‚ we were given an LED nightlight circuit. Upon first glance we noticed all the components‚ the zener diode‚ 3 resistors‚ a capacitor‚ 4 diodes‚ a photocell‚ an LED light‚ and something we thought was a transistor. We knew the first thing to do was to identify all of the components and find out the rating for them. We had to use the microscope to determine the identifying numbers on the zener diode‚ the capacitor‚ and the‚ assumed‚ transistor. The zener diode read 1N5242B‚ the capacitor
Premium Resistor Electrical resistance Electrical impedance