Current Control of VSI-PWM Inverters
... within a reasonable tolerance. This assumption will create an error for the ramp comparison controller which can produce relatively large current errors if the controller gain is low. The transient model for the induction motor is shown in Fig. 7 with the parameters for a typical 220-V three-phase 6 ...
... within a reasonable tolerance. This assumption will create an error for the ramp comparison controller which can produce relatively large current errors if the controller gain is low. The transient model for the induction motor is shown in Fig. 7 with the parameters for a typical 220-V three-phase 6 ...
ups - WordPress.com
... 650kVA, use compact-type thyristors (SemiPack) and are manufactured according to the schematic diagram shown previously, with small variations: The saturation-type choke L3 is used on the UPS up to 80kVA The fuse-holder BCB is installed only on the units with internal batteries (20 and 30kVA). T ...
... 650kVA, use compact-type thyristors (SemiPack) and are manufactured according to the schematic diagram shown previously, with small variations: The saturation-type choke L3 is used on the UPS up to 80kVA The fuse-holder BCB is installed only on the units with internal batteries (20 and 30kVA). T ...
BP104, BP104S Silicon PIN Photodiode
... Dark reverse current measurements, Iro, must be carried out in complete darkness - reverse currents of silicon photodiodes are in the range of nanoamperes only, and an illumination of a few lx is quite sufficient to falsify the test result. If a highly sensitive DVM is to be used, then a current sam ...
... Dark reverse current measurements, Iro, must be carried out in complete darkness - reverse currents of silicon photodiodes are in the range of nanoamperes only, and an illumination of a few lx is quite sufficient to falsify the test result. If a highly sensitive DVM is to be used, then a current sam ...
CISCO AIRONET POWER INJECTOR
... The Cisco Aironet Power Injector Media Converter (AIR-PWRINJ-FIB) converts fiber media to Category 5 media and combines the resulting data signal with power for delivery to the access point or bridge. The power injector media converter accepts 48 VDC power from either the barrel connector of the loc ...
... The Cisco Aironet Power Injector Media Converter (AIR-PWRINJ-FIB) converts fiber media to Category 5 media and combines the resulting data signal with power for delivery to the access point or bridge. The power injector media converter accepts 48 VDC power from either the barrel connector of the loc ...
metering_270411_psdas
... multiplying by 50 and neglecting all decimals. E.g. 49.89 Hz is recorded as 44. In case the average frequency is less than 49.0 Hz, it is recorded as 00. In case it is 51.0 Hz or higher, it is recorded as 99. The meter continuously computes the average of the RMS values of the three line-to-neut ...
... multiplying by 50 and neglecting all decimals. E.g. 49.89 Hz is recorded as 44. In case the average frequency is less than 49.0 Hz, it is recorded as 00. In case it is 51.0 Hz or higher, it is recorded as 99. The meter continuously computes the average of the RMS values of the three line-to-neut ...
Quiet and Dependable Welding Performance.
... Compact design fits easily in the box of a service truck or the basket of high reach equipment. At only 114 pounds it’s easy to move around the job site. 135 Amp DC Welder and 1.5kW 120VAC output is ideal for hard to reach areas such as rooftops or air conditioner repair. Note: Simultaneous operatio ...
... Compact design fits easily in the box of a service truck or the basket of high reach equipment. At only 114 pounds it’s easy to move around the job site. 135 Amp DC Welder and 1.5kW 120VAC output is ideal for hard to reach areas such as rooftops or air conditioner repair. Note: Simultaneous operatio ...
LTC3672B-1
... The buck regulator is designed to work with inductors in the range of 2.2μH to 10μH. A 4.7μH inductor is a good starting point. Larger value inductors reduce ripple current, which improves output ripple voltage. Lower value inductors result in higher ripple current and improved transient response ti ...
... The buck regulator is designed to work with inductors in the range of 2.2μH to 10μH. A 4.7μH inductor is a good starting point. Larger value inductors reduce ripple current, which improves output ripple voltage. Lower value inductors result in higher ripple current and improved transient response ti ...
Liquid Crystal Displays
... Tm and Tc, it has a liquid crystal phase. This type of LC in which the mesophase is defined by the temperature (between Tm and Tc) is called a thermotropic LC. When the mesophase is defined by a solvent concentration, it is called a lyotropic LC. Thermotropic LCs are used for display applications. T ...
... Tm and Tc, it has a liquid crystal phase. This type of LC in which the mesophase is defined by the temperature (between Tm and Tc) is called a thermotropic LC. When the mesophase is defined by a solvent concentration, it is called a lyotropic LC. Thermotropic LCs are used for display applications. T ...
roadhouse 30
... Mains inlet socket (this accommodates a standard IEC mains lead. The mains fuse is contained within a drawer in this socket and should always be replaced with a fuse of exactly the same type and rating to reduce the risk of fire or electric shock); High Tension Fuse Holder (this accommodates the hig ...
... Mains inlet socket (this accommodates a standard IEC mains lead. The mains fuse is contained within a drawer in this socket and should always be replaced with a fuse of exactly the same type and rating to reduce the risk of fire or electric shock); High Tension Fuse Holder (this accommodates the hig ...
PowerLab Teaching Series Owner`s Guide
... Many electrical systems (particularly those in metal enclosures) depend upon the presence of a protective earth for electrical safety. This is generally provided from the power outlet through a power cord, but may also be supplied as a dedicated safety earth conductor. Power cords should never be mo ...
... Many electrical systems (particularly those in metal enclosures) depend upon the presence of a protective earth for electrical safety. This is generally provided from the power outlet through a power cord, but may also be supplied as a dedicated safety earth conductor. Power cords should never be mo ...
A+ Practice Questions
... several possible field replaceable units (FRUs) that will resolve the problem. What should you do after turning the power off? a) Replace the indicated parts, one at a time in the recommended sequence, until the problem is resolved; return unused FRUs to stock b) Replace all of the indicated FRUs at ...
... several possible field replaceable units (FRUs) that will resolve the problem. What should you do after turning the power off? a) Replace the indicated parts, one at a time in the recommended sequence, until the problem is resolved; return unused FRUs to stock b) Replace all of the indicated FRUs at ...
Orangutan X2 quick-start guide and schematic
... The Orangutan X2 is intended to be used as a single unit with both boards connected together. However, it may sometimes be convenient to work with just the lower board, without motors or a large power supply connected. In such cases, the two power input pins above the 20-pin connector can be used. I ...
... The Orangutan X2 is intended to be used as a single unit with both boards connected together. However, it may sometimes be convenient to work with just the lower board, without motors or a large power supply connected. In such cases, the two power input pins above the 20-pin connector can be used. I ...
2 Electrical Systems
... complete datasheet has to be provided. If the datasheet describes more than one type, clearly mark in the datasheet to which type you are referring / which type you plan to use. Datasheets should only be used as a reference. Please cover the important data in your text by using tables, figures, etc ...
... complete datasheet has to be provided. If the datasheet describes more than one type, clearly mark in the datasheet to which type you are referring / which type you plan to use. Datasheets should only be used as a reference. Please cover the important data in your text by using tables, figures, etc ...
DS15BR400/DS15BR401 4-Channel LVDS Buffer/Repeater with
... input and output buffers and internal bias circuitry are powered off. When exiting powerdown mode, there is a delay associated with turning on bandgap references and input/output buffer circuits as indicated in the LVDS Output Switching Characteristics. Upon asserting the power down function (PWDN = ...
... input and output buffers and internal bias circuitry are powered off. When exiting powerdown mode, there is a delay associated with turning on bandgap references and input/output buffer circuits as indicated in the LVDS Output Switching Characteristics. Upon asserting the power down function (PWDN = ...
MAX8600/MAX8601 Single-/Dual-Input 1-Cell Li+ Chargers with OVP Protection and Programmable Charge Timer
... The charging rate is optimized to accommodate the thermal characteristics of a given application. There is no need to reduce the maximum charge current or worst-case charger power dissipation. Charging is optimized for Li+ cells using a control algorithm that includes low-battery precharging, voltag ...
... The charging rate is optimized to accommodate the thermal characteristics of a given application. There is no need to reduce the maximum charge current or worst-case charger power dissipation. Charging is optimized for Li+ cells using a control algorithm that includes low-battery precharging, voltag ...
Hand-Drawn Circuit Diagrams for all circuits that are to
... this measurement and model the behavior of the inductor using PSpice, we have to modify the ideal circuit as shown below. Inductors have finite resistance, so we have to add a resistor R L to our model of the inductor. The Analog Discovery function generator (Wavegen) can only deliver a limited amou ...
... this measurement and model the behavior of the inductor using PSpice, we have to modify the ideal circuit as shown below. Inductors have finite resistance, so we have to add a resistor R L to our model of the inductor. The Analog Discovery function generator (Wavegen) can only deliver a limited amou ...
Comparative study of maximum power point tracking algorithms
... test condition reference temperature TR (25 C), EG, the bandgap of the semiconductor used, the measured cell temperature T( C), Boltzmann’s constant kB, and the charge on an electron q. Equation (5) gives the lightgenerated current IL as a function of irradiance G (W/m2), the array’s short-circuit ...
... test condition reference temperature TR (25 C), EG, the bandgap of the semiconductor used, the measured cell temperature T( C), Boltzmann’s constant kB, and the charge on an electron q. Equation (5) gives the lightgenerated current IL as a function of irradiance G (W/m2), the array’s short-circuit ...
... levels larger than three. Compared with the three-level version, the voltage-balancing task is more complicated in these converters. For this reason they have been analyzed in a separated chapter. Multilevel converters with a large number of levels cannot achieve voltage balance for some operating c ...
LV8139JA Sine wave PWM Drive, Pre drive IC, for
... It incorporates a full complement of protection circuits and, by combining it with a hybrid IC in the STK611 or STK5C4 series, the number of components used can be reduced and a high level of reliability can be achieved. Furthermore, its power-saving mode enables the power consumption in the standby ...
... It incorporates a full complement of protection circuits and, by combining it with a hybrid IC in the STK611 or STK5C4 series, the number of components used can be reduced and a high level of reliability can be achieved. Furthermore, its power-saving mode enables the power consumption in the standby ...
MAX976/MAX978/MAX998 Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators ________________General Description
... affecting comparator operation. Likewise, do not threestate SHDN. Due to the output leakage currents of three-state devices and the small internal current for SHDN, three-stating this pin could also result in indeterminate logic levels. The maximum input voltage for SHDN is 6V, referred to GND, and ...
... affecting comparator operation. Likewise, do not threestate SHDN. Due to the output leakage currents of three-state devices and the small internal current for SHDN, three-stating this pin could also result in indeterminate logic levels. The maximum input voltage for SHDN is 6V, referred to GND, and ...
Mains electricity
Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.