Electric Circuits
... current). The rms value has an interesting property: Given an equivalent resistive load, R, and an equivalent time period, T, the rms value of a sinusoidal source delivers the same energy to R as does a dc source of the same value. ...
... current). The rms value has an interesting property: Given an equivalent resistive load, R, and an equivalent time period, T, the rms value of a sinusoidal source delivers the same energy to R as does a dc source of the same value. ...
Standards of Power Quality with reference to the Code of Practice for
... where Ih is the rms current of the hth harmonic current, and I1 is the rms value of the fundamental current. A typical supply voltage waveform at a consumer’s metering point (or point of common coupling) normally doesn’t exceed 5% THD in Hong Kong but for some high-rise commercial buildings, the vo ...
... where Ih is the rms current of the hth harmonic current, and I1 is the rms value of the fundamental current. A typical supply voltage waveform at a consumer’s metering point (or point of common coupling) normally doesn’t exceed 5% THD in Hong Kong but for some high-rise commercial buildings, the vo ...
CMOS ANALOG CIRCUIT DESIGN
... Course Outcomes After studying this course the students would gain enough knowledge ...
... Course Outcomes After studying this course the students would gain enough knowledge ...
Importance of Isolated System
... running over power cable or equipment being dropped) In any case result would be the same The level of electrical safety has now been reduced. Such occurrences on an Isolated Power System (IPS) would as described above result in the LIM alarming and warning being issued of potential fault hazard. ...
... running over power cable or equipment being dropped) In any case result would be the same The level of electrical safety has now been reduced. Such occurrences on an Isolated Power System (IPS) would as described above result in the LIM alarming and warning being issued of potential fault hazard. ...
Stepper Drive DSR 92-70-C - AHS Antriebstechnik GmbH
... Different switch and jumper settings allow optimal adaption to the individual application. The units are designed for rack mount and own one 32-pin DIN 41612 strip connector for all electrical connections. The most important features are: · Bipolar power stage · Different user selectable microsteppi ...
... Different switch and jumper settings allow optimal adaption to the individual application. The units are designed for rack mount and own one 32-pin DIN 41612 strip connector for all electrical connections. The most important features are: · Bipolar power stage · Different user selectable microsteppi ...
it right here
... condition in which interference is created by ground currents when grounds are connected at more than one point. Ground Potential The potential of the earth. A circuit, terminal or chassis is said to be at ground potential when it is used as a reference point for other potentials in the system. Hygr ...
... condition in which interference is created by ground currents when grounds are connected at more than one point. Ground Potential The potential of the earth. A circuit, terminal or chassis is said to be at ground potential when it is used as a reference point for other potentials in the system. Hygr ...
Next-Generation Power Module for Automotive Applications J1-Series
... sensitivity to the temperature and thus it is no longer necessary to consider the chip temperature margin in the product design. Figure 9 shows the measurement results for the OC trip level when the correction is used. (3) By adding a circuit to switch the gate drive voltage from 12.7 V to VDD volta ...
... sensitivity to the temperature and thus it is no longer necessary to consider the chip temperature margin in the product design. Figure 9 shows the measurement results for the OC trip level when the correction is used. (3) By adding a circuit to switch the gate drive voltage from 12.7 V to VDD volta ...
electronic devices ii
... carriers cross over to the collector resulting in a large increase in Ic. This is principle of operation of transistor as an amplifier. The behavior of npn transistor can be explained in the same way with the battery bias reversed and the majority carriers ie electrons contributing to conduction. NO ...
... carriers cross over to the collector resulting in a large increase in Ic. This is principle of operation of transistor as an amplifier. The behavior of npn transistor can be explained in the same way with the battery bias reversed and the majority carriers ie electrons contributing to conduction. NO ...
How to measure output voltage from a VFD to a motor
... • A dc voltage value that is too low can cause the drive to trip. At the cause, the mains input voltage is probably too low, or the input sine wave might be distorted by flat topping. • If the ripple’s peaks have a different repetitive level, one of the rectifier diodes is possibly malfunctioning ...
... • A dc voltage value that is too low can cause the drive to trip. At the cause, the mains input voltage is probably too low, or the input sine wave might be distorted by flat topping. • If the ripple’s peaks have a different repetitive level, one of the rectifier diodes is possibly malfunctioning ...
Lead Acid Battery Desulfation Pulse Generator
... why some have had problems with frequency/ pulse width being off. I have used parts from Digikey.com, and also from Mouser Electronics. The only item that is remotely critical is the inductor L1. I have used a variety of inductors taken from old switching supplies and TV chassis, and they all work f ...
... why some have had problems with frequency/ pulse width being off. I have used parts from Digikey.com, and also from Mouser Electronics. The only item that is remotely critical is the inductor L1. I have used a variety of inductors taken from old switching supplies and TV chassis, and they all work f ...
Section 26 09 00 Instrumentation and Control for
... Deliver materials in SAGE Electrochromics’ original, unopened, undamaged containers with identification labels intact. ...
... Deliver materials in SAGE Electrochromics’ original, unopened, undamaged containers with identification labels intact. ...
Characterization of Variable High Voltage D. C. Power Supply
... gradient was decreased to 4.14 KV and discharge regime was established, as shown in Figure 2. The balance of the discharge was obtained under stable circuit conditions, while the glow was observed between the two electrodes. The inlet of the gases through the cathode was sensitive to discharge stabi ...
... gradient was decreased to 4.14 KV and discharge regime was established, as shown in Figure 2. The balance of the discharge was obtained under stable circuit conditions, while the glow was observed between the two electrodes. The inlet of the gases through the cathode was sensitive to discharge stabi ...
How to measure output voltage from a VFD to a motor
... • A dc voltage value that is too low can cause the drive to trip. At the cause, the mains input voltage is probably too low, or the input sine wave might be distorted by flat topping. • If the ripple’s peaks have a different repetitive level, one of the rectifier diodes is possibly malfunctioning ...
... • A dc voltage value that is too low can cause the drive to trip. At the cause, the mains input voltage is probably too low, or the input sine wave might be distorted by flat topping. • If the ripple’s peaks have a different repetitive level, one of the rectifier diodes is possibly malfunctioning ...
Diode :- Clamper
... circuits have the ability to ‘clip’ off a portion of the input signal without distorting the remaining part of the alternating waveform. ...
... circuits have the ability to ‘clip’ off a portion of the input signal without distorting the remaining part of the alternating waveform. ...
2. Technical Aspects of Grid Interconnection
... The fact that interconnections between power systems are increasingly common does not imply that they are as simple as connecting a few wires. Interconnections obviously entail the expense of constructing and operating transmission lines and substations, or in the case of HVDC, converter stations. I ...
... The fact that interconnections between power systems are increasingly common does not imply that they are as simple as connecting a few wires. Interconnections obviously entail the expense of constructing and operating transmission lines and substations, or in the case of HVDC, converter stations. I ...
Stereo Phono/Line Preamplifier Ultra 4B SE Special Edition User’s Manual
... the rear of the chassis. The tubes supplied are new-old stock (NOS) and have been pretested. A burn-in period of several hours may be needed to achieve the best sonic performance. Tube life should be thousands of hours. Aging tubes may result in a reduced gain in one or both channels or an increase ...
... the rear of the chassis. The tubes supplied are new-old stock (NOS) and have been pretested. A burn-in period of several hours may be needed to achieve the best sonic performance. Tube life should be thousands of hours. Aging tubes may result in a reduced gain in one or both channels or an increase ...
galvanic coupling - emc of electrical systems (part iv.)
... fact that electrical components are not ideal and so they are containing certain parasitic capacitances, inductances and real resistances, is valid. Due to existence of the contents of higher harmonics in currents that flow across the common conductors, such circuits must be taken as circuits with d ...
... fact that electrical components are not ideal and so they are containing certain parasitic capacitances, inductances and real resistances, is valid. Due to existence of the contents of higher harmonics in currents that flow across the common conductors, such circuits must be taken as circuits with d ...
FSB117H / FSB127H / FSB147H mWSaver™ Fairchild Power Switch (FPS™)
... minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while still meeting IEC61010-1 safety requirement. mWSaver™ Green Mode gradually decreases switching frequency as load decreases to minimize switching losses. A new proprietary asynchronous jitter decreases EMI emi ...
... minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while still meeting IEC61010-1 safety requirement. mWSaver™ Green Mode gradually decreases switching frequency as load decreases to minimize switching losses. A new proprietary asynchronous jitter decreases EMI emi ...
HV sedici imp. Inglese
... positive power supply and operates in a synchronic way with a second circuit called PWM SERVEUR, which has the task of making the PWM control of the negative power supply. Synchronism between the two PWM generator clocks avoids the formation of residual products at low frequency which could be conve ...
... positive power supply and operates in a synchronic way with a second circuit called PWM SERVEUR, which has the task of making the PWM control of the negative power supply. Synchronism between the two PWM generator clocks avoids the formation of residual products at low frequency which could be conve ...
Siemens PTI − Software Solutions IEC 60909 Fault Calculations
... It can simulate one or all fault types at one bus or all system or sub-system buses in one run thereby reducing the analysis time. The challenge The electrical utilities and industries need to design, operate, protect and maintain the electrical installations as per IEC fault current duties. To dete ...
... It can simulate one or all fault types at one bus or all system or sub-system buses in one run thereby reducing the analysis time. The challenge The electrical utilities and industries need to design, operate, protect and maintain the electrical installations as per IEC fault current duties. To dete ...
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.