2 Principles of dc machines
... rotation but not both. The voltage induced would be very low but the currents of very large amplitudes can be supplied by such machines. Such sources are used in some applications like pulse-current and MHD generators, liquid metal pumps or plasma rockets. The steady field can also be produced using ...
... rotation but not both. The voltage induced would be very low but the currents of very large amplitudes can be supplied by such machines. Such sources are used in some applications like pulse-current and MHD generators, liquid metal pumps or plasma rockets. The steady field can also be produced using ...
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.10, pp. 1559-1566
... http://www.ieejournal.com/ for dc furnaces. Electric arc furnace operation may be classified into several stages, depending on the melting status and the time lapse from the initial energization of the unit. During the melting period, sets of steel nearly create a short circuit on the secondary side ...
... http://www.ieejournal.com/ for dc furnaces. Electric arc furnace operation may be classified into several stages, depending on the melting status and the time lapse from the initial energization of the unit. During the melting period, sets of steel nearly create a short circuit on the secondary side ...
Creating an Electronic Analog of a Stomatal Network
... pores on the surfaces of leaves. In response to different environmental stimuli, they control the exchange rate of both water vapor and carbon dioxide between the air and the leaf interior, making their role an important determination of the status of plant life on Earth. This study is based on a re ...
... pores on the surfaces of leaves. In response to different environmental stimuli, they control the exchange rate of both water vapor and carbon dioxide between the air and the leaf interior, making their role an important determination of the status of plant life on Earth. This study is based on a re ...
Using your VZ-7 - Surplus City Liquidators
... The SETTING STEP switch operates in the same way, but it’s choices are: OFF - H1 - H2 - C1 - C2 - FA - h1 - h2 - c1 - c2 - OFF. Selecting the capital letter for H or C will simultaneously send the FAN line active. Alternately, stopping on a choice that has a small h or c will send signals only down ...
... The SETTING STEP switch operates in the same way, but it’s choices are: OFF - H1 - H2 - C1 - C2 - FA - h1 - h2 - c1 - c2 - OFF. Selecting the capital letter for H or C will simultaneously send the FAN line active. Alternately, stopping on a choice that has a small h or c will send signals only down ...
apparent power - McGraw Hill Higher Education
... • Resistance doesn’t cause phase shift. • Reactance causes 90 of phase shift. • Theta is the angle by which the current leads or lags the voltage. • Trigonometric functions can be used to find the resistive and reactive parts of a phasor. ...
... • Resistance doesn’t cause phase shift. • Reactance causes 90 of phase shift. • Theta is the angle by which the current leads or lags the voltage. • Trigonometric functions can be used to find the resistive and reactive parts of a phasor. ...
LABORATORY SESSION 6
... ( I f = V / R f ) is zero and the field will collapse. Under this condition, there will be no generated emf except for a small voltage Er due to the residual flux, resulting in a small circulating current given by Er / Ra . Therefore, the dc generator is self-protected against a short circuit at its ...
... ( I f = V / R f ) is zero and the field will collapse. Under this condition, there will be no generated emf except for a small voltage Er due to the residual flux, resulting in a small circulating current given by Er / Ra . Therefore, the dc generator is self-protected against a short circuit at its ...
Guide to International Travel with Electrical Appliances
... bathrooms of many foreign countries are designed for use ONLY with low wattage appliances rated 5 – 10 watts maximum, such as electric shavers, contact lens disinfectors, etc. Using a hair dryer or other high wattage appliance on this outlet can blow the circuit breaker and may damage both the conve ...
... bathrooms of many foreign countries are designed for use ONLY with low wattage appliances rated 5 – 10 watts maximum, such as electric shavers, contact lens disinfectors, etc. Using a hair dryer or other high wattage appliance on this outlet can blow the circuit breaker and may damage both the conve ...
Recall Last Lecture
... 6. Go back to equation of vo vo = - 720 ib = - 720 [ vb / Rib ] = -720 vb / 80.06 = - 8.993 vb vo / vs = - 8.993 vb / 1.0149 vb vo / vs = - 8.86 ...
... 6. Go back to equation of vo vo = - 720 ib = - 720 [ vb / Rib ] = -720 vb / 80.06 = - 8.993 vb vo / vs = - 8.993 vb / 1.0149 vb vo / vs = - 8.86 ...
Compensation of a PFC Stage Driven by the NCP1654
... peaks at high line). Actually fc must be as low as possible to obtain a near unity power factor. This is because any ripple on the error amplifier output generates some distortion of the line current. On the other hand, a low crossover frequency leads to a slow response to load or line variations. S ...
... peaks at high line). Actually fc must be as low as possible to obtain a near unity power factor. This is because any ripple on the error amplifier output generates some distortion of the line current. On the other hand, a low crossover frequency leads to a slow response to load or line variations. S ...
Flow - Learn.org.au
... 7. MEASURING VOLTAGE AND CURRENT Voltages associated with a circuit may be measured using an instrument called a voltmeter. The voltmeter • measures the electrical pressure between two points • must be connected across the two points between which the voltage is to be measured, this is known as a p ...
... 7. MEASURING VOLTAGE AND CURRENT Voltages associated with a circuit may be measured using an instrument called a voltmeter. The voltmeter • measures the electrical pressure between two points • must be connected across the two points between which the voltage is to be measured, this is known as a p ...
UM0242
... developed specially for demonstration board applications . The demonstration board incorporates microcontroller, programmable voltage regulator, Mosfets, switches and various resistive networks. The onboard regulator can be configured to supply various voltages by selecting appropriate resistance fr ...
... developed specially for demonstration board applications . The demonstration board incorporates microcontroller, programmable voltage regulator, Mosfets, switches and various resistive networks. The onboard regulator can be configured to supply various voltages by selecting appropriate resistance fr ...
2005 high speed troubleshooting v25-v27 chassis
... Many electrical and mechanical parts in television receivers have special safety related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, watta ...
... Many electrical and mechanical parts in television receivers have special safety related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, watta ...
The Influence of Diodes and Transistors Made of Silicon
... In Figs.6-8 one can observe that the highest values of the converter output voltage and the watt-hour efficiency are observed for the converter CONV1 including silicon devices analysis. On the contrary, the highest values of transistor case temperature are observed for the converter CONV3, whereas t ...
... In Figs.6-8 one can observe that the highest values of the converter output voltage and the watt-hour efficiency are observed for the converter CONV1 including silicon devices analysis. On the contrary, the highest values of transistor case temperature are observed for the converter CONV3, whereas t ...
R.C.N. Pilawa-Podgurski, A.D. Sagneri, J.M. Rivas, D.I. Anderson, and D.J. Perreault, “Very High Frequency Resonant Boost Converters,” 2007 IEEE Power Electronics Specialists Conference, pp. 2718 – 2724.
... is efficient operation over a much wider load range than can be achieved with many other strategies. Figure 4 illustrates this approach. The bulk output capacitance Cout is sized to achieve an intended on-off modulation frequency given a load range and the desired ripple voltage. Smaller capacitance ...
... is efficient operation over a much wider load range than can be achieved with many other strategies. Figure 4 illustrates this approach. The bulk output capacitance Cout is sized to achieve an intended on-off modulation frequency given a load range and the desired ripple voltage. Smaller capacitance ...
H11N1M, H11N2M, H11N3M 6-Pin DIP High Speed Logic Optocouplers H11N1M,
... listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to- ...
... listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to- ...
74VHC4040 12-Stage Binary Counter 74VHC4040 12-Sta
... achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The VHC4040 is a 12-stage counter which increments on the negative edge of the input clock and all outputs are reset to a low level by applying a logical high on the reset i ...
... achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The VHC4040 is a 12-stage counter which increments on the negative edge of the input clock and all outputs are reset to a low level by applying a logical high on the reset i ...
Introd_AnalogDiscover_Scope
... V1(t) = B sin(xt) is a sinusoidal voltage that varies from –B to +B, the amplitude of the voltage is B, and the peak-to-peak voltage Vpp = 2B V2(t) = B sin(xt) + C is a sinusoidal voltage with a DC offset that varies from V2min = (–B+C) to V2max = (+B+C) and the peak-to-peak voltage Vpp = 2B. The AC ...
... V1(t) = B sin(xt) is a sinusoidal voltage that varies from –B to +B, the amplitude of the voltage is B, and the peak-to-peak voltage Vpp = 2B V2(t) = B sin(xt) + C is a sinusoidal voltage with a DC offset that varies from V2min = (–B+C) to V2max = (+B+C) and the peak-to-peak voltage Vpp = 2B. The AC ...
PowerLogic Circuit monitor series 4000
... instrumentation, data acquisition and control capabilities. The products can integrate easily in power monitoring and control systems due to their optional Ethernet connections and embedded web server. They are Transparent Ready. These devices are designed for applications where power quality and av ...
... instrumentation, data acquisition and control capabilities. The products can integrate easily in power monitoring and control systems due to their optional Ethernet connections and embedded web server. They are Transparent Ready. These devices are designed for applications where power quality and av ...
MAX5955/MAX5956 Low-Voltage, Dual Hot-Swap Controllers with Independent On/Off Control General Description
... operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ...
... operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ...
Thyristor power controller TE10A Burst-firing Single
... • Before any connection or disconnection, make sure that power and control cables and leads are isolated from voltage sources. • The safety earth must be connected before any other connection is made during wiring and should be the last cable to be disconnected. • Thyristors are not isolating device ...
... • Before any connection or disconnection, make sure that power and control cables and leads are isolated from voltage sources. • The safety earth must be connected before any other connection is made during wiring and should be the last cable to be disconnected. • Thyristors are not isolating device ...
UX SERIES - Decentralized Parallel Modular UPS series
... Superior MTBF (Meantime before failure) and MTTR (Meantime to Repair) design minimizes service and maintenance costs and no skilled personnel on site is required, and only simply exchanges the module for an easy fault recovery. ...
... Superior MTBF (Meantime before failure) and MTTR (Meantime to Repair) design minimizes service and maintenance costs and no skilled personnel on site is required, and only simply exchanges the module for an easy fault recovery. ...
Electrical substation
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels.Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control.A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. The word substation comes from the days before the distribution system became a grid. As central generation stations became larger, smaller generating plants were converted to distribution stations, receiving their energy supply from a larger plant instead of using their own generators. The first substations were connected to only one power station, where the generators were housed, and were subsidiaries of that power station.