Modeling of Multi-Pulse VSC Based SSSC and STATCOM
... switches S1, S2, S3, S4, S5 and S6 in Figure 1, respectively. The gate signals can only take values of 0 or 1 for the switching devices to be off or on, respectively. Inspecting Figure 3 it can be seen that even though these 6-pulse voltages are ac waveforms, they are not sinusoidal; this is due to ...
... switches S1, S2, S3, S4, S5 and S6 in Figure 1, respectively. The gate signals can only take values of 0 or 1 for the switching devices to be off or on, respectively. Inspecting Figure 3 it can be seen that even though these 6-pulse voltages are ac waveforms, they are not sinusoidal; this is due to ...
A. Internal Inductance
... and then in North America. Around the same time with the research efforts of scientists like Sir Humphrey Davy, Andre Ampere, George Ohm and Karl Gauss the exciting possibilities of the use of electrical energy started to dawn upon the scientific community. In England, Michael Faraday worked on his ...
... and then in North America. Around the same time with the research efforts of scientists like Sir Humphrey Davy, Andre Ampere, George Ohm and Karl Gauss the exciting possibilities of the use of electrical energy started to dawn upon the scientific community. In England, Michael Faraday worked on his ...
Electrochimica Acta, 90(2013)
... Electrochemical supercapacitors (ESs) are considered important energy efficiency devices for rapid energy storage and delivery. Among the advantages of ESs are high power density, long lifecycle, high efficiency, wide range of operating temperatures, environmental friendliness, and safety. ESs also se ...
... Electrochemical supercapacitors (ESs) are considered important energy efficiency devices for rapid energy storage and delivery. Among the advantages of ESs are high power density, long lifecycle, high efficiency, wide range of operating temperatures, environmental friendliness, and safety. ESs also se ...
1 AP240E Data Analysis Program Bulletin CW-E
... Analog data such as temperature and illuminance data can be saved simultaneously with power data by using the analog input function (2 channels). The available input ranges are 100 mV/1 V/5 V. In addition, the analog output function (4 channels) acquires data to an external recorder, allowing data d ...
... Analog data such as temperature and illuminance data can be saved simultaneously with power data by using the analog input function (2 channels). The available input ranges are 100 mV/1 V/5 V. In addition, the analog output function (4 channels) acquires data to an external recorder, allowing data d ...
TLV431x Low-Voltage Adjustable Precision
... The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and 6 V with two external resistors (see Figure 20). These devices op ...
... The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and 6 V with two external resistors (see Figure 20). These devices op ...
Modelling of Surface and Bulk Resistance for Wearable Textile
... The textile material can be seen from electrical point of view as an electrical circuit composed from connected resistors and battery. Battery represents electrode poles and resistors correspond to structure of fibres. Fibres form regular shapes in textile material. Considering ideal case the shapes ...
... The textile material can be seen from electrical point of view as an electrical circuit composed from connected resistors and battery. Battery represents electrode poles and resistors correspond to structure of fibres. Fibres form regular shapes in textile material. Considering ideal case the shapes ...
module 1
... and distribution. Electric power is generated at the power generating stations by synchronous alternators that are usually driven either by steam or hydro turbines. Most of the power generation takes place at generating stations that may contain more than one such alternator-turbine combinations. De ...
... and distribution. Electric power is generated at the power generating stations by synchronous alternators that are usually driven either by steam or hydro turbines. Most of the power generation takes place at generating stations that may contain more than one such alternator-turbine combinations. De ...
Activity 8C
... The development of alternative switching (e.g., power transistors, GTO s), the applications for type and circuit of choppers are limited to high power levels and especially, to traction motor control. Some of chopper type and circuit used by traction equipment manufactures are discussed in this sect ...
... The development of alternative switching (e.g., power transistors, GTO s), the applications for type and circuit of choppers are limited to high power levels and especially, to traction motor control. Some of chopper type and circuit used by traction equipment manufactures are discussed in this sect ...
7I49 MANUAL
... time constant. This value is selected as a compromise between output ripple and settling time. This is much faster than most controlled devices and will not normally have any effect on loop stability or performance. The 7I49 can be assembled with different components if necessary to change this time ...
... time constant. This value is selected as a compromise between output ripple and settling time. This is much faster than most controlled devices and will not normally have any effect on loop stability or performance. The 7I49 can be assembled with different components if necessary to change this time ...
System Power Management for Mobile Handset MAX8939/MAX8939A/MAX8939B General Description
... The integrated lithium-ion (Li+) charger is protected up to 28V input and features a protected output voltage for supply of a USB transceiver. Proprietary thermalregulation circuitry limits the die temperature during fast-charging or when the ICs are exposed to high ambient temperatures, allowing ma ...
... The integrated lithium-ion (Li+) charger is protected up to 28V input and features a protected output voltage for supply of a USB transceiver. Proprietary thermalregulation circuitry limits the die temperature during fast-charging or when the ICs are exposed to high ambient temperatures, allowing ma ...
Battery Charger
... battery’s terminal voltage drops the charger starts a charging pulse until the terminal voltage reaches the set level. The charging pulse is then discontinued and the cycle is repeated infinitely. If the terminal voltage drops below a lower limit, the charger automatically goes back to the beginning ...
... battery’s terminal voltage drops the charger starts a charging pulse until the terminal voltage reaches the set level. The charging pulse is then discontinued and the cycle is repeated infinitely. If the terminal voltage drops below a lower limit, the charger automatically goes back to the beginning ...
Manual 900 MHz
... equipment includes one 12-1238 Relay Driver for decoding the neutral signal, and one 12-1238 for each one of the two direction codes. These drive control relays to operate crane control contactors and provide for safety interlocks. The analog speed signal is decoded by a 12-1504 Analog Decoder. The ...
... equipment includes one 12-1238 Relay Driver for decoding the neutral signal, and one 12-1238 for each one of the two direction codes. These drive control relays to operate crane control contactors and provide for safety interlocks. The analog speed signal is decoded by a 12-1504 Analog Decoder. The ...
Reclosers INTRODUCTION
... Cycle) of a circuit breaker shall be two unit operations with a 15 second interval between operations (CO+15s+CO). (C37.04-5.6) In addition, the breaker must be capable of a “number of operations in which the sum of the currents interrupted does not exceed 400 percent of the required asymmetrical in ...
... Cycle) of a circuit breaker shall be two unit operations with a 15 second interval between operations (CO+15s+CO). (C37.04-5.6) In addition, the breaker must be capable of a “number of operations in which the sum of the currents interrupted does not exceed 400 percent of the required asymmetrical in ...
UFC 3-520-01 Interior Electrical Systems
... loads greater than 150 kVA unless 208Y/120V systems are shown to be more cost-effective. Use step-down transformers inside the facility as required to obtain lower voltages. ...
... loads greater than 150 kVA unless 208Y/120V systems are shown to be more cost-effective. Use step-down transformers inside the facility as required to obtain lower voltages. ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.