Chapter I I. Introduction Power electronics converters can be found wherever there is a need to change voltage‚ current of frequency of electric power. The power range of these converters is forming some mill watts (as in mobile phone) to thousands of megawatts in an HVDC transmission system. With classical electronics‚ electrical currents‚ and voltage are used to carry information‚ where as with power electronics‚ they carry power electronics becomes the efficiency An inverter converts DC
Premium Alternating current Electricity Transformer
control very large load of AC with very small input DC. The saturable reactor consists of three essential elements : Direct current source‚ magnetic core with windings‚ and alternating current source. How it work? The AC load circuit run on to magnetic core and the DC control circuit is also went on to the same core. Ac current flows through winding and Since this current is alternating‚ the flux set up in the magnetic circuit loop is constantly changing in magnitude and direction. This means the field
Premium Alternating current Inductor Magnetic field
which is used to measure tiny currents‚ usually 1mA or less. Ammeter An ammeter is used to measure current. Voltmeter A voltmeter is used to measure voltage. Resistor (Fixed and Variable) Fixed Variable A resistor restricts the flow of current‚ for example to limit the current passing through an LED. A resistor is used with a capacitor in a timing circuit. This type of variable resistor with 2 contacts (a rheostat) is usually used to control current.. Capacitor: (fixed & variable)
Premium Electricity Electric current Alternating current
meters needed for such experiment. Some of the most common devices and meters to be used is described below. 1) RESISTORS Resistors are devices used to give a desired value of resistance. They are inserted into a circuit in order to lower the current of to produce a desired voltage drop. There are two kinds of resistors: a) the Fix Resistor and‚ b) the Variable Resistor. The fix resistor has a specific value of resistance which cannot be changed‚ while the variable resistor may have a any value
Premium Electricity Electric current Direct current
ELECTRICAL SAFETY IN 1 CONSTRUCTION NATIONAL SAFETY DAY 2007 Environment‚ Health And Safety Karnataka State Safety Institute JNB/March 2007 The Times Of India March 9‚ 2007‚ Page 3 2 Page 3 has become popular for the society & fashion info Karnataka State Safety Institute JNB/March 2007 ELECTRICAL SAFETY IN 3 CONSTRUCTION NATIONAL SAFETY DAY 2007 Environment‚ Health And Safety Karnataka State Safety Institute JNB/March 2007 Electrical Safety Shock 4
Premium Occupational safety and health Circuit breaker Construction
Masters of Science (Banking) UUM-IBBM WBB 6013: SEMINAR IN BANKING FDI Inflow‚ Current Account Balance‚ Inflation And Interest Rate: How Do They Impact The Malaysian Economy? By Siva Kumar Kandiah (Matric No: 89306) ___________________________________________________________ Abstract This article seeks to find which of the macroeconomic variables among FDI inflow‚ current account balance‚ inflation and interest rate play a significant role in economic growth in Malaysia using
Premium Macroeconomics Inflation Balance of payments
INFORMATION: Resistance is the force that opposes the flow of electrons in a circuit. The equation for resistance is Ω=V/A. (Ohms equals Voltage divided by amps). Resistivity is a measure of how strongly a material opposes the flow of electrical current‚ There are four main factors that affect resistance: Length – this is because the electrons would bump into more atoms‚ the longer the wire which is like using up its fuel. Material – different materials inherent resistances as they have more or
Premium Electric current Alternating current Volt
electropneumatic controllers ................................. 14 1.4 Advantages of electropneumatic controllers .................................. 17 Chapter 2 – Fundamentals of electrical technology ........................ 19 2.1 Direct current and alternating current............................................. 20 2.2 Ohm’s Law...................................................................................... 22 2.3 Function of a solenoid ........................................................
Premium Electricity Alternating current Electric current
John)(2010) Analogue Multimeters • (n.a)(n.d) Circuit Testing of MultiMeters. Retrieved: January 1‚2011.From: http://www.globalspec.com/LearnMore/Labware_Test_Measurement/Multimeters_Electrical_Test_Meters/Analog_Multimeters • (NA)(2008) Making current measurements • (NA)(ND) What is Continuity? Retrieved: January 09‚2011. From: http://physicsdaily.com/ • (NA)(Decemeber 13‚2010) What is Resistance? Retrieved: January 8‚2011 from http://www.ladyada.net/learn/multimeter/resistance.html • (NA)(ND)
Premium Multimeter Alternating current Voltage
What’s the difference between resistance and resistivity? Resistance is the obstruction offered to the flow of current by a conductor. Resistivity is the obstruction offered to the flow of current by UNIT AREA OF the conductor. So basically‚ resistance is the property of the object (say a copper wire)‚ whereas resistivity is the property of the substance (copper). And so resistance depends upon the properties of the object. Whereas resistivity depends upon the properties of the metal.
Premium Electricity Capacitor Alternating current