Period 3
... Negative charge = excess of electrons Ion = An atom that has a different amount of electrons than what is normal Insulator = A material that resists electrical flow (Rubber) Conductor = A material that does not have a high resistance (Copper) ...
... Negative charge = excess of electrons Ion = An atom that has a different amount of electrons than what is normal Insulator = A material that resists electrical flow (Rubber) Conductor = A material that does not have a high resistance (Copper) ...
Three Phase DIode Bridge Rectifier
... The first 3-ph diode rectifier circuit is shown in Fig. 1 with R-L load at the dc-side. Here, the output resistor is kept at 50Ω and the inductor is kept at 0.1H. The per phase source voltage is kept at 325V (peak). The second diode bridge rectifier circuit is shown in Fig. 2 with Resistive load and ...
... The first 3-ph diode rectifier circuit is shown in Fig. 1 with R-L load at the dc-side. Here, the output resistor is kept at 50Ω and the inductor is kept at 0.1H. The per phase source voltage is kept at 325V (peak). The second diode bridge rectifier circuit is shown in Fig. 2 with Resistive load and ...
ELECTRICAL TEST ANSWERS April 14, 2004 1. Chapters 1
... D. None of these Effective values of alternating current and voltage are the ones ordinarily referred to when speaking of alternating quantities. Alternating voltages and currents are constantly changing in value, within a certain range, from instant to instant even if the load is constant. It is no ...
... D. None of these Effective values of alternating current and voltage are the ones ordinarily referred to when speaking of alternating quantities. Alternating voltages and currents are constantly changing in value, within a certain range, from instant to instant even if the load is constant. It is no ...
6114.Output pulses after applying power through FETs
... Seeing as the pulses were good, I applied 24V to the FETs to see if I get around 15V DC output at the load resistor. The circuit was working for a little bit then the DC output signal was lost. I then disconnected the 24V from the FETs and went back to check the circuit to see what went wrong. I re ...
... Seeing as the pulses were good, I applied 24V to the FETs to see if I get around 15V DC output at the load resistor. The circuit was working for a little bit then the DC output signal was lost. I then disconnected the 24V from the FETs and went back to check the circuit to see what went wrong. I re ...
AQA Physics I–V characteristics Specification references PS 3.1 3.5
... c A chip in the windscreen breaks one of the filaments. Explain what effect, if any, this will have on the current into the device. Polystyrene foam can be cut and shaped using a hot metal wire. As the wire is moved through the foam, the polystyrene melts. Figure 2 shows how the temperature of a cut ...
... c A chip in the windscreen breaks one of the filaments. Explain what effect, if any, this will have on the current into the device. Polystyrene foam can be cut and shaped using a hot metal wire. As the wire is moved through the foam, the polystyrene melts. Figure 2 shows how the temperature of a cut ...
High Efficiency Motor Protection Industry White Paper
... LRC is a steady state current. That is, it remains constant so long as the rotor is not moving. Motors, however, are highly inductive loads. Like all inductive loads they generate an initial transient (short lived) response which causes the load to draw more current. The steady state LRC is symmetri ...
... LRC is a steady state current. That is, it remains constant so long as the rotor is not moving. Motors, however, are highly inductive loads. Like all inductive loads they generate an initial transient (short lived) response which causes the load to draw more current. The steady state LRC is symmetri ...
Physics 202 Chapter 33 Nov 1, 2007 AC circuits On whiteboard
... Resonance occurs at the same frequency regardless of the value of R As R decreases, the curve becomes narrower and taller Theoretically, if R = 0 the current would be infinite at resonance ...
... Resonance occurs at the same frequency regardless of the value of R As R decreases, the curve becomes narrower and taller Theoretically, if R = 0 the current would be infinite at resonance ...
Electric Current
... 2. When possible, measure and average all three phases. This precaution applies to both permanent and temporary CTs. A small unbalance in the supply voltage can result in a large current unbalance among the three phases. As a rule, a 1% unbalance in voltage will result in roughly a 7% unbalance in c ...
... 2. When possible, measure and average all three phases. This precaution applies to both permanent and temporary CTs. A small unbalance in the supply voltage can result in a large current unbalance among the three phases. As a rule, a 1% unbalance in voltage will result in roughly a 7% unbalance in c ...
TRIAC
TRIAC, from triode for alternating current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor.TRIACs are a subset of thyristors and are closely related to silicon controlled rectifiers (SCR). However, unlike SCRs, which are unidirectional devices (that is, they can conduct current only in one direction), TRIACs are bidirectional and so allow current in either direction. Another difference from SCRs is that TRIAC current can be enabled by either a positive or negative current applied to its gate electrode, whereas SCRs can be triggered only by positive current into the gate. To create a triggering current, a positive or negative voltage has to be applied to the gate with respect to the MT1 terminal (otherwise known as A1).Once triggered, the device continues to conduct until the current drops below a certain threshold called the holding current.The bidirectionality makes TRIACs very convenient switches for alternating-current (AC) circuits, also allowing them to control very large power flows with milliampere-scale gate currents. In addition, applying a trigger pulse at a controlled phase angle in an AC cycle allows control of the percentage of current that flows through the TRIAC to the load (phase control), which is commonly used, for example, in controlling the speed of low-power induction motors, in dimming lamps, and in controlling AC heating resistors.