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X-Band Portable System PM6.5 - Ham
X-Band Portable System PM6.5 - Ham

... scribed here are the R.F. unit, the L.O. assembly, according to the directions described later. and optionally, the antenna structure. The output power of the L.O. assembly is approxiSome of the modifications to the M/A-COM units mately 50 mW (+17 dBm). are described in a set of original documents b ...
Here is the link for the Technician License Manual
Here is the link for the Technician License Manual

... by the United nations for communication and technology issues. Amateur operators are regulated by the FCC and the FCC is regulated by the ITU. The ITU divides the world into three ITU regions with North America located in region 2. Europe and Africa, which is located in region 1 and Asia and the Pac ...
Controlling Analog Output From a Digital CPLD Using PWM
Controlling Analog Output From a Digital CPLD Using PWM

... input. As the name implies, a PWM generates a series of constant voltage or current digital pulses with pulse widths or duty cycles that are proportional to the intended analog strength. The series of modulated pulses can be converted to an analog voltage with a low-pass filter, but this is usually ...
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HMC536MS8G 数据资料DataSheet下载
HMC536MS8G 数据资料DataSheet下载

... Very Fast Switching Speed Included in the HMC-DK005 Designer’s Kit ...
Aalborg Universitet Synthesis of Variable Harmonic Impedance in Inverter-Interfaced Distributed
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DRM039, Single Phase AC Induction Motor Control Reference Design
DRM039, Single Phase AC Induction Motor Control Reference Design

... single-phase a.c. induction motor. It presents a design of a low-cost, high-efficiency drive capable of supplying a single-phase a.c. induction motor with a PWM modulated sinusoidal voltage. The circuit operation is controlled by a tiny MC68HC908QT4 MCU. The device is aimed at substituting the commo ...
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DAC712 数据资料 dataSheet 下载

... Settling time is the total time (including slew time) for the D/A output to settle to within an error band around its final value after a change in input. Settling times are specified to within ±0.003% of Full-Scale Range (FSR) for an output step change of 20V and 1LSB. The 1LSB change is measured a ...
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... above +70°C derate linearly with 12 mW/K above +70°C derate linearly with 8 mW/K above +60°C derate linearly with 5.5 mW/K ...
User Manual - Sonel Analysis
User Manual - Sonel Analysis

...  blue - current configuration is compatible with the analyzer, but differs from the one saved to the disk,  yellow - the configuration is not compatible with the analyzer, but is compatible with the one saved to disk,  red - the current configuration is not compatible with the analyzer and not co ...
Free-Energy
Free-Energy

... If it is possible to arrange a magnetic field feedback loop for mechanical devices, then it is probably possible to arrange it for solid-state devices like coils and capacitors. The others parts of this article are devoted to devices which use coils and capacitors. All of the examples in this articl ...
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MPU4 FIELD SERVICE MANUAL

... cover all machines using the MPU4 system. References made to some of the more detailed points may vary from model to model. The information is correct for the majority of cases but ideally should be used in conjunction with the individual information sheet supplied with each new machine. The manual ...
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Detection of Stator Winding Inter-turn Short Circuit In Induction Motor

BLM.gov Home Page | BUREAU OF LAND MANAGEMENT
BLM.gov Home Page | BUREAU OF LAND MANAGEMENT

An Introduction to Diode Thermal Measurements
An Introduction to Diode Thermal Measurements

Manual for MICROLITE
Manual for MICROLITE

... The output signals on terminals 5 & 6 will either be analogue output or RS232 output, depending on which option has been fitted. The alarm outputs are rated at 5 Amperes, 240 VAC or 1 Ampere 24VDC. They are designed to switch resistive loads only. If you wish to switch inductive loads, you should fi ...
experimental characterization regarding two types of
experimental characterization regarding two types of

... For maintaining the overall efficiency of a lighting system employing LEDs, power electronics is the main choice for drivers. But for the power electronic converter, the LED is only an electrical load (a non-linear one). The photometrical characterization of LEDs is then of great value, considering ...
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)

VLT Series 2000/3000 Watt True Sine Wave Inverter
VLT Series 2000/3000 Watt True Sine Wave Inverter

... The AC output neutral conductor is connected to AC ground and inverter chassis ground inside the inverter. This conforms to National Electrical Code requirements that separately derived AC sources (such as inverter and generators) have their neutral conductors tied to ground in the same way that the ...
Hyperion EOS 1210i Charger
Hyperion EOS 1210i Charger

... note that MINIMUM inner cable diameter should be 2.5mm (14ga) and MAXIMUM cable length is 20cm (8”). It is critically important that you use either a fully charged 12V lead-acid automobile battery - or a high quality AC-DC power supply in the range of 12V to 15V DC output, with minimum current ratin ...
An Experimental Study of Wave Power Generation Using a
An Experimental Study of Wave Power Generation Using a

< 1 ... 235 236 237 238 239 240 241 242 243 ... 1974 >

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.
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