Impact of high WPPs penetration on the Vietnam Power System Vijay Vittal
... ple closed loops. Subsystems A and B are connected mainly by a double-circuit 500 kV tie-line and two 220 kV lines as shown in Fig. 1. The VPS 500 kV and 220 kV networks are incorporated by upgrading the working 2012 VPS to the 2020 VPS based on the information from the Vietnam Master Plan [1]. All ...
... ple closed loops. Subsystems A and B are connected mainly by a double-circuit 500 kV tie-line and two 220 kV lines as shown in Fig. 1. The VPS 500 kV and 220 kV networks are incorporated by upgrading the working 2012 VPS to the 2020 VPS based on the information from the Vietnam Master Plan [1]. All ...
BS 6651 BS EN 62305
... Where to apply protection Where to protect • All cables that enter or leave the building: - Mains power - Data communication and local area network cables - Telephone lines - CCTV, Satellite, TV and antenna cables • The power supply local to important ...
... Where to apply protection Where to protect • All cables that enter or leave the building: - Mains power - Data communication and local area network cables - Telephone lines - CCTV, Satellite, TV and antenna cables • The power supply local to important ...
lm555,timer.pdf
... below Vcc/3. When the trigger pulse voltage applied to the #2 pin falls below Vcc/3 while the timer output is low, the timer's internal flip-flop turns the discharging Tr. off and causes the timer output to become high by charging the external capacitor C1 and setting the flip-flop output at the sam ...
... below Vcc/3. When the trigger pulse voltage applied to the #2 pin falls below Vcc/3 while the timer output is low, the timer's internal flip-flop turns the discharging Tr. off and causes the timer output to become high by charging the external capacitor C1 and setting the flip-flop output at the sam ...
Datasheet
... The clock rate for the charge pump typically operates at greater than 15kHz allowing the pump to run efficiently with small 0.1uF capacitors. Efficient operation depends on rapid charging and discharging of C1 and C2, therefore capacitors should be mounted as close as possible to the IC and have low ...
... The clock rate for the charge pump typically operates at greater than 15kHz allowing the pump to run efficiently with small 0.1uF capacitors. Efficient operation depends on rapid charging and discharging of C1 and C2, therefore capacitors should be mounted as close as possible to the IC and have low ...
TS14002 - Semtech
... (2) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure ...
... (2) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure ...
MQHR-28-28S
... longer a need for a minimum load, as is typical for converters that use diodes for rectification. The synchronous rectifiers actually permit a negative load current to flow back into the converter’s output terminals if the load is a source of short or long term energy. The MQHR converters employ a “ ...
... longer a need for a minimum load, as is typical for converters that use diodes for rectification. The synchronous rectifiers actually permit a negative load current to flow back into the converter’s output terminals if the load is a source of short or long term energy. The MQHR converters employ a “ ...
Controlling the dimensionality of charge transport in organic thin-film transistors
... P3CPT belongs to a group of conjugated polyelectrolytes whose intriguing properties stem from the combination of a hydrophobic πconjugated backbone with the physicochemical properties of a hydrophilic ionic side group. [17] Previously, this class of polymers has been used in organic photovoltaics [1 ...
... P3CPT belongs to a group of conjugated polyelectrolytes whose intriguing properties stem from the combination of a hydrophobic πconjugated backbone with the physicochemical properties of a hydrophilic ionic side group. [17] Previously, this class of polymers has been used in organic photovoltaics [1 ...
TDA8920C 2 x 110 W class-D power amplifier
... circuit will be activated and the system will shut down. Once the supply voltage rises above VP(uvp) again, the system will restart after a delay of 100 ms. If the supply voltage exceeds the maximum supply voltage threshold, VP(ovp), the OVP circuit will be activated and the power stages will be shu ...
... circuit will be activated and the system will shut down. Once the supply voltage rises above VP(uvp) again, the system will restart after a delay of 100 ms. If the supply voltage exceeds the maximum supply voltage threshold, VP(ovp), the OVP circuit will be activated and the power stages will be shu ...
Predictive Control vs. Linear Control for Current
... Fig. 3 shows the small-signal equivalent of the current regulator loop with the pulse-width modulator replaced by this equivalent model. A discrete-time z-domain can be associated with the sampling operation of the pulse-width modulator. The pulse-width modulator essentially samples its reference si ...
... Fig. 3 shows the small-signal equivalent of the current regulator loop with the pulse-width modulator replaced by this equivalent model. A discrete-time z-domain can be associated with the sampling operation of the pulse-width modulator. The pulse-width modulator essentially samples its reference si ...
MAX9030/MAX9031/ MAX9032/MAX9034 Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators
... rises above the trip point. VTL is the threshold voltage at which the comparator switches its output from low to high as VIN drops below the trip point. 2) The hysteresis band will be: VHYS = VTH - VTL = VDD(R2 / (R1 + R2)) 3) In this example, let VDD = +5V and VREF = +2.5V. VTH = 2.5V + 2.5(R2 / (R ...
... rises above the trip point. VTL is the threshold voltage at which the comparator switches its output from low to high as VIN drops below the trip point. 2) The hysteresis band will be: VHYS = VTH - VTL = VDD(R2 / (R1 + R2)) 3) In this example, let VDD = +5V and VREF = +2.5V. VTH = 2.5V + 2.5(R2 / (R ...
ISL45042A - Intersil
... and R2 (see Figure 1). The voltage difference between the VOUT pin and ISET pin (see Figure 5) has to be greater than 1.75V. This will keep the output MOS transistor in the saturation region. Expected current settings and 7-bit accuracy occurs when the output MOS transistor is operating in the satur ...
... and R2 (see Figure 1). The voltage difference between the VOUT pin and ISET pin (see Figure 5) has to be greater than 1.75V. This will keep the output MOS transistor in the saturation region. Expected current settings and 7-bit accuracy occurs when the output MOS transistor is operating in the satur ...
Electronics and Electrical instruments
... VAE/1 1200 VA for output (total 2400 VA) VAE/2 3200 VA for output (total 6400 VA). For both models: adjustable output dc voltage from 0 to 250 V; adjustable three phase output voltage from 0 to 400 V with possibility of single-phase use; on request other output voltage or powers. On request also not ...
... VAE/1 1200 VA for output (total 2400 VA) VAE/2 3200 VA for output (total 6400 VA). For both models: adjustable output dc voltage from 0 to 250 V; adjustable three phase output voltage from 0 to 400 V with possibility of single-phase use; on request other output voltage or powers. On request also not ...
R.M.A. Dawson, M.H. Lu, J.C. Sturm et al, "Impact of transient response of organic light emitting diodes on the design of active matrix OLED displays," Tech. Dig. Int. Elec. Dev. Mtg., pp. 875-878 (1998).
... level across the diode. This implies that when the OLED is first tumed on, a large current flows to charge the parallel capacitance. The traps in the hole and electron transport materials are then filled by the constant current associated with the diode itself and the luminescence increases as the i ...
... level across the diode. This implies that when the OLED is first tumed on, a large current flows to charge the parallel capacitance. The traps in the hole and electron transport materials are then filled by the constant current associated with the diode itself and the luminescence increases as the i ...
Effect and Utilization of Common Source Inductance in Synchronous
... driver is less important here for sync FET. For sync FET, its gate source capacitance is normally very big. This gives us opportunity to use self-driven for sync BUCK topology as shown in Fig.10. During turn on of control FET Q1, common source inductance will turn off sync FET Q2, and then big Cgs w ...
... driver is less important here for sync FET. For sync FET, its gate source capacitance is normally very big. This gives us opportunity to use self-driven for sync BUCK topology as shown in Fig.10. During turn on of control FET Q1, common source inductance will turn off sync FET Q2, and then big Cgs w ...
The Field Effect Transistor
... carriers, Holes and Electrons. The Field Effect Transistor on the other hand is a "Unipolar" device that depends only on the conduction of electrons (N-channel) or holes (P-channel). The Field Effect Transistor has one major advantage over its standard bipolar transistor cousins, in that their inpu ...
... carriers, Holes and Electrons. The Field Effect Transistor on the other hand is a "Unipolar" device that depends only on the conduction of electrons (N-channel) or holes (P-channel). The Field Effect Transistor has one major advantage over its standard bipolar transistor cousins, in that their inpu ...
LT1511 - Constant-Current/ Constant-Voltage
... UV (Pin 6): Undervoltage Lockout Input. The rising threshold is at 6.7V with a hysteresis of 0.5V. Switching stops in undervoltage lockout. When the supply (normally the wall adapter output) to the chip is removed, the UV pin has to be pulled down to below 0.7V (a 5k resistor from adapter output to ...
... UV (Pin 6): Undervoltage Lockout Input. The rising threshold is at 6.7V with a hysteresis of 0.5V. Switching stops in undervoltage lockout. When the supply (normally the wall adapter output) to the chip is removed, the UV pin has to be pulled down to below 0.7V (a 5k resistor from adapter output to ...
study of solution towards ground leakage current via inverter
... is free, abundant, pollution-free, and most widely distributed. Electricity can be produced from sunlight through a process called photovoltaic (PV). “Photo” refers to light and “voltaic” refer to voltage. Because the source of light is the sun, usually they are called solar cells [4]. Indirectly, p ...
... is free, abundant, pollution-free, and most widely distributed. Electricity can be produced from sunlight through a process called photovoltaic (PV). “Photo” refers to light and “voltaic” refer to voltage. Because the source of light is the sun, usually they are called solar cells [4]. Indirectly, p ...
VOLTMETER/PHASER a n d A C C E S S O... Operating & Instruction Manual
... must be followed. Always wear approved insulated gloves, eye and face protection and FR clothing. Do not touch meter housing during measurement. Read and understand instructions prior to use. Failure to follow these instructions or other misuse or misapplication can lead to severe injury and death. ...
... must be followed. Always wear approved insulated gloves, eye and face protection and FR clothing. Do not touch meter housing during measurement. Read and understand instructions prior to use. Failure to follow these instructions or other misuse or misapplication can lead to severe injury and death. ...
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.