initial current reduction of synchronous motors with salient poles by
... DC generators and works as a synchronous compensator. Taking into consideration the excavators' manufacturing date, technical solutions used at that time and their long life span, some original technical solutions have become outdated in the meantime, so it is necessary to replace them with new, mor ...
... DC generators and works as a synchronous compensator. Taking into consideration the excavators' manufacturing date, technical solutions used at that time and their long life span, some original technical solutions have become outdated in the meantime, so it is necessary to replace them with new, mor ...
Abstract
... 2.1 - Advantage of plasma speakers over conventional high-frequency speakers Conventional high frequency speakers have a number of drawbacks. One of the most difficult issues to address is the mass of the speaker. The voice coil, suspension system, and cone or dome of a conventional speaker all move ...
... 2.1 - Advantage of plasma speakers over conventional high-frequency speakers Conventional high frequency speakers have a number of drawbacks. One of the most difficult issues to address is the mass of the speaker. The voice coil, suspension system, and cone or dome of a conventional speaker all move ...
Diode Applications file
... or photonics. Such circuits use electronics and optics for signal processing, storage, transmission. Examples include fibre-optic transmission of telephone and television signals, optical storage in CDROM computer disks. Optical transmission provides very wide bandwidth and low signal attenuation. O ...
... or photonics. Such circuits use electronics and optics for signal processing, storage, transmission. Examples include fibre-optic transmission of telephone and television signals, optical storage in CDROM computer disks. Optical transmission provides very wide bandwidth and low signal attenuation. O ...
ADP1612 数据手册DataSheet 下载
... The ADP1612 is a step-up dc-to-dc switching converter with an integrated 1.5 A, 0.15 Ω power switch capable of providing an output voltage as high as 20 V. With a package height of less than 1.1 mm, the ADP1612 is optimal for space-constrained applications such as portable devices or thin film trans ...
... The ADP1612 is a step-up dc-to-dc switching converter with an integrated 1.5 A, 0.15 Ω power switch capable of providing an output voltage as high as 20 V. With a package height of less than 1.1 mm, the ADP1612 is optimal for space-constrained applications such as portable devices or thin film trans ...
Real Life High Voltage Accident Cases
... During the testing, “barrel” transformers are used to transform ordinary electricity (single phase 120 volts) to 25,000 volts per phase. These are then put in series and rectified to the DC value of voltage up to 500,000 volts. Before the circuit breaker was stressed, the capacitors were first stres ...
... During the testing, “barrel” transformers are used to transform ordinary electricity (single phase 120 volts) to 25,000 volts per phase. These are then put in series and rectified to the DC value of voltage up to 500,000 volts. Before the circuit breaker was stressed, the capacitors were first stres ...
MICRF001 Theory of Operation - SP
... In most radio applications, the receiver is selectivity-limited. In other words, the minimum signal recoverable by the receiver is limited not by the thermal noise of the receiver (which sets the receiver “sensitivity”), but other “noise” located in the “ether,” for example from other transmitters, ...
... In most radio applications, the receiver is selectivity-limited. In other words, the minimum signal recoverable by the receiver is limited not by the thermal noise of the receiver (which sets the receiver “sensitivity”), but other “noise” located in the “ether,” for example from other transmitters, ...
A closer look at VSD voltage output waveforms
... converter is able to accommodate this. Phase-to-earth measurements were performed because high-speed differential voltage readings are difficult to perform accurately and safely. It is however possible to perform the measurements with an additional probe and one extra simultaneous phase-to-earth vol ...
... converter is able to accommodate this. Phase-to-earth measurements were performed because high-speed differential voltage readings are difficult to perform accurately and safely. It is however possible to perform the measurements with an additional probe and one extra simultaneous phase-to-earth vol ...
ii. traditional z-source inverter and its modulation strategy
... cost. If the input dc source of non-isolated inverter and grid do not have same ground, then the input dc source may have large leakage current, which will cause safety and electromagnetic interference problems [3], [4], [5]. In order to solve the aforementioned problem, either extra switches have t ...
... cost. If the input dc source of non-isolated inverter and grid do not have same ground, then the input dc source may have large leakage current, which will cause safety and electromagnetic interference problems [3], [4], [5]. In order to solve the aforementioned problem, either extra switches have t ...
1. conversion of ammeter into voltmeter
... input voltage required to give a standard output of 50 mW in case of low power receiver and 500 mW in case of high power receiver. Sensibility can also be expressed in dB as the input voltage required below 1 volt. 2. Selectivity : It is the ability of a receiver to distinguish between the wanted & ...
... input voltage required to give a standard output of 50 mW in case of low power receiver and 500 mW in case of high power receiver. Sensibility can also be expressed in dB as the input voltage required below 1 volt. 2. Selectivity : It is the ability of a receiver to distinguish between the wanted & ...
Chapter 24 - Capacitance
... of work dW, where dW = (dq)V. (Remember from before that Wab Ua Ub qVa Vb , or W = qV is the work done moving a charge q through a voltage V.) ...
... of work dW, where dW = (dq)V. (Remember from before that Wab Ua Ub qVa Vb , or W = qV is the work done moving a charge q through a voltage V.) ...
CT-326-C - Test Equipment Depot
... �CAUTION: Do not connect the transmitter to a separate ground in electrically susceptible patient areas of a health care facility. �CAUTION: Make the ground connection first and disconnect it last when using the pigtail connector. The T300 Transmitter is designed for tracing 6-300 V ac or dc circuit ...
... �CAUTION: Do not connect the transmitter to a separate ground in electrically susceptible patient areas of a health care facility. �CAUTION: Make the ground connection first and disconnect it last when using the pigtail connector. The T300 Transmitter is designed for tracing 6-300 V ac or dc circuit ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""