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DS3991 General Description Features
DS3991 General Description Features

... voltage levels are adequate for proper operation. The inverter supply is monitored for overvoltage conditions at the SVMH pin and undervoltage conditions at the SVML pin. External resistor-dividers at each SVM input feed into two comparators, both having 2V thresholds (see Figure 2). Using the equat ...
LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step
LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step

... kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 7-lead TO-220 package with several different lead bend options, and a 7-lead TO-263 Surface mount package. A standard series of inductors (both through hole ...
A Comprehensive Study of Voltage Balancing Problem of Cascaded
A Comprehensive Study of Voltage Balancing Problem of Cascaded

subelement t5 - Tukwila Radio Club
subelement t5 - Tukwila Radio Club

... T5C08 - What is the formula used to calculate electrical power in a DC circuit? A. Power (P) equals voltage (E) multiplied by current (I) B. Power (P) equals voltage (E) divided by current (I) C. Power (P) equals voltage (E) minus current (I) D. Power (P) equals voltage (E) plus current (I) ...
Features Application Status Input Active Burden Module Description
Features Application Status Input Active Burden Module Description

VOLTAGE CONTROL IN DISTRIBUTED ELECTRICITY GENERATION BY USING SYNCHRONOUS CONDENSER Mikko Mäkelä
VOLTAGE CONTROL IN DISTRIBUTED ELECTRICITY GENERATION BY USING SYNCHRONOUS CONDENSER Mikko Mäkelä

... 4.1.3 Fault-ride-through (FRT) The fault ride through is a requirement necessary for generators to remain connected to healthy circuits until the faulted element of plant and apparatus has been cleared from the transmission system. 4.1.4 FRT requirements Grid disturbances such as severe voltage drop ...
The Effective Insulation of Masts and Towers for
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... Unfortunately, we have to contend with pollution deposits on the insulator surface, wetting due to precipitation, salt spray in coastal regions, in many parts of Canada high induced potentials due to blowing snow and dust, the ever present danger of high induced potentials due to electrical storm ac ...
High Voltage Ceramic Capacitors
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... Each lead wire should be subjected to 5N of weight and bent 90˚ at the point of egress, in one direciton, then returned to its original position and bent 90˚ in the opposite direction at the rate of one bend in 2 to 3 sec. The lead wire of a capacitor should be dipped into a 25% methanol solution of ...
NCP1256 - Low Power Offline PWM Current
NCP1256 - Low Power Offline PWM Current

... watts. Housed in a tiny TSOP−6 package, the part can be supplied up to 30 V. It hosts a jittered 65 or 100−kHz switching circuitry operated in peak current mode control. When the power in the secondary side starts decreasing, the controller automatically folds back its switching frequency down to a ...
LTM8032 - EN55022B Compliant 36V, 2A DC/DC uModule Regulator
LTM8032 - EN55022B Compliant 36V, 2A DC/DC uModule Regulator

LTC3868-1 - Low IQ, Dual 2-Phase Synchronous Step
LTC3868-1 - Low IQ, Dual 2-Phase Synchronous Step

... 535kHz. Other frequencies between 50kHz and 900kHz can be programmed using a resistor between FREQ and GND. An internal 20μA pull-up current develops the voltage to be used by the VCO to control the frequency PLLIN/MODE (Pin 4/Pin 6): External Synchronization Input to Phase Detector and Forced Conti ...
MAX1777/MAX1977/MAX1999 High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers General Description
MAX1777/MAX1977/MAX1999 High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers General Description

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LTC3107 - Ultra-Low Voltage Energy Harvester and Primary Battery

... The LTC3107 is designed to use the battery to start-up the IC and power VOUT and VLDO with or without any harvested energy available. If there is no harvester input, or insufficient harvester input to power the load, then VOUT will be provided by the battery through a current-limited switch internal ...
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... (2) Connecting the power supply connector backward Connecting of the power supply in reverse polarity can damage the IC. Take precautions when connecting the power supply lines. An external direction diode can be added. (3) Power supply lines Design the PCB layout pattern to provide low impedance GN ...
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... required by active matrix thin-film transistor (TFT) liquid crystal displays (LCD) in a low-profile TSSOP package. One high-power step-up converter and two low-power charge pumps convert the 2.7V to 5.5V input voltage into three independent output voltages. A built-in linear regulator and VCOM buffe ...
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... -20°C to +60°C Less than 3 seconds IP52 as standard IP54 on request Grade UL94V0 Dimensions and panel cut out conform to IEC473, DIN43700. Case made from glass filled polycarbonate self-extinguishing and non drip in accordance with UL94V-O Slim-line DIN43802, black as standard Standard sheet glass, ...
MB39C811 Ultra Low Power Buck PMIC Solar/Vibrations Energy
MB39C811 Ultra Low Power Buck PMIC Solar/Vibrations Energy

... Output Voltage Setting and Under Voltage Lockout Protection (UVLO) Function It is possible to select the output voltage from eight kinds of presets using the S2, S1 and S0 pins. Also, the under voltage lockout protection circuit is provided to prevent IC's malfunction by the transient state or the i ...
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... For machines used in control systems, a small moment of inertia is desirable . For low moment of inertia the diameter should be made as small as possible. Conversely a high inertia machine may be required for impact load applications and such machines are designed with larger diameter. Voltage betwe ...
LTM8031 - Ultralow Noise EMC 36V, 1A DC/DC uModule Regulator
LTM8031 - Ultralow Noise EMC 36V, 1A DC/DC uModule Regulator

... The bias regulator can draw power from the VIN pin, but if the BIAS pin is connected to an external voltage higher than 2.8V, bias power will be drawn from the external source (typically the regulated output voltage). This improves efficiency. The RUN/SS pin is used to place the LTM8031 in shutdown, ...
ECE 469 Power Electronics Lab Manual
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LM5010A, Q1 High-Voltage 1-A Step-Down
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... operating range extended to 6V minimum. The LM5010A features all the functions needed to implement a low cost, efficient, buck regulator capable of supplying in excess of 1A load current. This high voltage regulator integrates an N-Channel Buck Switch, and is available in thermally enhanced WSON-10 ...
S6AP111A28 2ch DC/DC Converter IC with PWM Synchronous
S6AP111A28 2ch DC/DC Converter IC with PWM Synchronous

Investigation of PWM-controlled MOSFET with inductive load
Investigation of PWM-controlled MOSFET with inductive load

... A power MOSFET usually have an energy rating to tell how much energy they can withstand. Avalanching is the case when the intrinsic zenerdiode of the MOSFET is conducting, then avalanche current is flowing through the MOSFET. It’s not flowing through the gate-enhanced channel as the drain current, h ...
Adcom-GFA-5503-Service
Adcom-GFA-5503-Service

... 3. Move the transformer leads so they are configured as shown in figure 2. 4. Change the rear panel AC fuse from 8A to 15A, AGC. Place a sticker on the rear panel at the fuse holder to show the new value fuse (15A) and new value operating voltage (120VAC). 5. Test the unit with a 120VAC source. Whit ...
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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.""
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