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... blocks, Tr1, is supplied with a base bias current through the emitter follower circuit as well as the resistor in the added current-drive supply circuit, resulting in high output operation. The other power stage block, Tr2, is supplied with a base bias current through the current-drive circuit only, ...
... blocks, Tr1, is supplied with a base bias current through the emitter follower circuit as well as the resistor in the added current-drive supply circuit, resulting in high output operation. The other power stage block, Tr2, is supplied with a base bias current through the current-drive circuit only, ...
Principles of Electronic Communication Systems
... A tuned circuit at the output of the mixer selects the difference frequency, or intermediate frequency (IF). The local oscillator is made tunable so that its frequency can be adjusted over a relatively wide range. © 2008 The McGraw-Hill Companies ...
... A tuned circuit at the output of the mixer selects the difference frequency, or intermediate frequency (IF). The local oscillator is made tunable so that its frequency can be adjusted over a relatively wide range. © 2008 The McGraw-Hill Companies ...
MRFIC1859 Dual-Band/GSM 3.6 V Integrated Power Amplifier
... With matching circuit modifications, it is also applicable for use in triple band GSM900/DCS1800/PCS1900 equipment. Typical performances in GSM/DCS at 3.6 V are: GSM: 35.8 dBm with 53% PAE and, DCS: 34 dBm with 43% PAE. It features a large band (900 to 1800 MHz) internal Negative Voltage Generator b ...
... With matching circuit modifications, it is also applicable for use in triple band GSM900/DCS1800/PCS1900 equipment. Typical performances in GSM/DCS at 3.6 V are: GSM: 35.8 dBm with 53% PAE and, DCS: 34 dBm with 43% PAE. It features a large band (900 to 1800 MHz) internal Negative Voltage Generator b ...
AD8476 数据手册DataSheet 下载
... amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. It provides a precision gain of 1, common-mode level shifting, low temperature drift, and rail-to-r ...
... amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. It provides a precision gain of 1, common-mode level shifting, low temperature drift, and rail-to-r ...
L12-13_advance_2014
... The IQ sends up to 5 inst. / cycle to the decoders Merge two adjacent instructions into a single μop – A macro-fused instruction executes with a single dispatch ...
... The IQ sends up to 5 inst. / cycle to the decoders Merge two adjacent instructions into a single μop – A macro-fused instruction executes with a single dispatch ...
MAX2163 ISDB-T 1-Segment Tuner General Description Features
... The MAX2163 includes LNAs, RF variable gain amplifiers, I and Q downconverting mixers, a baseband variable gain amplifier, and a low-IF filter. The MAX2163’s variable gain amplifiers provide in excess of 100dB of control range. The MAX2163 also includes fully monolithic VCOs as well as a complete fr ...
... The MAX2163 includes LNAs, RF variable gain amplifiers, I and Q downconverting mixers, a baseband variable gain amplifier, and a low-IF filter. The MAX2163’s variable gain amplifiers provide in excess of 100dB of control range. The MAX2163 also includes fully monolithic VCOs as well as a complete fr ...
Detection of Stator Short Circuit Faults in Three-Phase
... open-circuit of the stator coil which is out of scope of this paper. Several studies [5, 6, 9, 10, 11, 12, 19, 20] report that depending on the type of shorts, and condition of motor (age, working condition, etc), the motor may continue to operate initially, even though short-circuit current will fl ...
... open-circuit of the stator coil which is out of scope of this paper. Several studies [5, 6, 9, 10, 11, 12, 19, 20] report that depending on the type of shorts, and condition of motor (age, working condition, etc), the motor may continue to operate initially, even though short-circuit current will fl ...
Alberta Reliability Standard Automatic Generation Control BAL-005-AB-0.2b
... (b) records of checking and calibrating against a common reference; (c) where the manufacturer’s specification does not require calibration of these devices, records of cross-checking against a properly calibrated equipment. MR21 Evidence of adhering to the minimum values for measuring devices as id ...
... (b) records of checking and calibrating against a common reference; (c) where the manufacturer’s specification does not require calibration of these devices, records of cross-checking against a properly calibrated equipment. MR21 Evidence of adhering to the minimum values for measuring devices as id ...
Aalborg Universitet Reactive Power Injection Strategies for Single-Phase Photovoltaic Systems
... applications with lower power ratings (e.g. several kW), and are typically connected to low-voltage networks. Meanwhile, it is required in those grid regulations for most systems to operate at unity power factor (or a minimum power factor, e.g. power factor ≥ 0.9) with Maximum Power Point Tracking ( ...
... applications with lower power ratings (e.g. several kW), and are typically connected to low-voltage networks. Meanwhile, it is required in those grid regulations for most systems to operate at unity power factor (or a minimum power factor, e.g. power factor ≥ 0.9) with Maximum Power Point Tracking ( ...
Alberta Reliability Standard Automatic Generation Control BAL-005-AB-0.2b
... (b) records of checking and calibrating against a common reference; (c) where the manufacturer’s specification does not require calibration of these devices, records of cross-checking against a properly calibrated equipment. MR21 Evidence of adhering to the minimum values for measuring devices as id ...
... (b) records of checking and calibrating against a common reference; (c) where the manufacturer’s specification does not require calibration of these devices, records of cross-checking against a properly calibrated equipment. MR21 Evidence of adhering to the minimum values for measuring devices as id ...
Study and Simulation of Current Controlled PWM Inverters
... detail in [1].These are thus essentially open loop systems where the switching patterns are predetermined. There is no feedback and thus the system cannot ensure whether the output voltages and currents remain within desired margins. Current in this case and the nature of current (both magnitude and ...
... detail in [1].These are thus essentially open loop systems where the switching patterns are predetermined. There is no feedback and thus the system cannot ensure whether the output voltages and currents remain within desired margins. Current in this case and the nature of current (both magnitude and ...
This work shows the possibility of using a low-cost 130
... certain distance [1]. The exploitation of mm-wave frequencies for high data rate transfer is a natural step due to the immense bandwidths made available for commercial use either freely or relatively low-cost [2]. One of the possible applications for mm-wave and wideband communications is radio-over ...
... certain distance [1]. The exploitation of mm-wave frequencies for high data rate transfer is a natural step due to the immense bandwidths made available for commercial use either freely or relatively low-cost [2]. One of the possible applications for mm-wave and wideband communications is radio-over ...
Electronic Components for Green Power Generation
... generation. Alternatively, the PCC® (power capacitor chip) can also be designed into such applications. This compact power capacitor features extremely low ESR and ESL values and can be mounted directly onto the IGBT module. Transformers and power inductors also play a key role in inverters. Our cap ...
... generation. Alternatively, the PCC® (power capacitor chip) can also be designed into such applications. This compact power capacitor features extremely low ESR and ESL values and can be mounted directly onto the IGBT module. Transformers and power inductors also play a key role in inverters. Our cap ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.