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microwave solid state devices
microwave solid state devices

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,

DC-DC CONVERTERS: A PRIMER
DC-DC CONVERTERS: A PRIMER

tps72501.pdf
tps72501.pdf

... Ground current is typically 210 µA at full load and drops to less than 80 µA at no load. Standby current is less than 1 µA. Each regulator option is available in either a SOT223-5, D (TPS72501 only), or DDPAK package. With a low input voltage and properly heatsinked package, the regulator dissipates ...
Electricity questions: Monitoring and measuring a.c.
Electricity questions: Monitoring and measuring a.c.

... Sketch graphs of V R against time for the capacitor charging and discharging. Show numerical values for the maximum and minimum values of V R . ...
BDTIC PFC-DCM IC www.BDTIC.com/infineon Boost Controller
BDTIC PFC-DCM IC www.BDTIC.com/infineon Boost Controller

Spark Plug Ignition Models Service Manual
Spark Plug Ignition Models Service Manual

... The solid state relay is used to de-energize the start winding on split-phase motors. As mentioned in the Motor Section, remember that split-phase motors have both an auxiliary (start) and a main (run) winding. For proper motor operation, both the auxiliary and main winding are energized during star ...
(A) I(t)
(A) I(t)

Experiment 1 - RPI ECSE - Rensselaer Polytechnic Institute
Experiment 1 - RPI ECSE - Rensselaer Polytechnic Institute

8 W Single End, EL34 amplifier
8 W Single End, EL34 amplifier

Data sheet  General Description
Data sheet General Description

... (82%). This is to leave enough time for over-current detection. Output voltage out of this range is not allowed. ...
Power MOSFET Electrical Characteristics
Power MOSFET Electrical Characteristics

... safeguards for their hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including ...
TPS54872 数据资料 dataSheet 下载
TPS54872 数据资料 dataSheet 下载

Investigation Of Factors Affecting The Sustainability Of Arcs
Investigation Of Factors Affecting The Sustainability Of Arcs

... For a single phase a-c arc the current flow between two electrodes will go to zero at the end of each half cycle and deionization begins. The race between deionization and recovery voltage determines if the arc re-ignites. In a three phase arcing event, current flow through an arc will always be pre ...
Power Quality Standards for Electric Service
Power Quality Standards for Electric Service

... service, or alterations to existing service, desired by the Customer: 1. Total motor load (to include size(s) of largest motor(s), starting current(s), NEMA letter or code) and rated voltage. 2. General characteristics of equipment to be driven by motors. 3. Date new electric service or alterations ...
JV2416961699
JV2416961699

AN1645 - STMicroelectronics
AN1645 - STMicroelectronics

... operation prevents secondary side shoot-through conditions providing proper timing at the outputs turnoff transition. This smart function operates through a fast cycle-after-cycle control logic mechanism based on an internal high frequency oscillator, synchronized by the clock signal. The IC provide ...
Transformer TheoryPDF
Transformer TheoryPDF

... from one circuit to another magnetically by the process of  electromagnetic induction, or mutual induction • Principle of electromagnetic induction: • An alternating magnetic flux is produced in the magnetic core of the  transformer by passing an AC current through the primary winding • The magnetic ...
SCIENTIFIC PAPERS OF THE UNIVERSITY OF PARDUBICE
SCIENTIFIC PAPERS OF THE UNIVERSITY OF PARDUBICE

... control circuits of switch actuators and also overvoltage protections. The control circuits are galvanically separated from power part with electric strength 4 kV. The motors of switch actuators are fed by unshielded cables from the switchboard. The length of cable between frequency converter and m ...
LM555/NE555/SA555 Single Timer
LM555/NE555/SA555 Single Timer

MAX745 Switch-Mode Lithium-Ion Battery-Charger General Description
MAX745 Switch-Mode Lithium-Ion Battery-Charger General Description

MAX16935 36V, 3.5A, 2.2MHz Step-Down Converter with 28µA Quiescent Current General Description
MAX16935 36V, 3.5A, 2.2MHz Step-Down Converter with 28µA Quiescent Current General Description

... The MAX16935 is a 3.5A current-mode step-down converter with integrated high-side and low-side MOSFETs designed to operate with an external Schottky diode for better efficiency. The low-side MOSFET enables fixed-frequency forced-PWM (FPWM) operation under light-load applications. The device operates ...
BDTIC www.BDTIC.com/infineon  ™ Compact
BDTIC www.BDTIC.com/infineon ™ Compact

W. Inam, K.K. Afridi and D.J. Perreault, “High Efficiency Resonant dc/dc Converter Utilizing a Resistance Compression Network,” 2013 IEEE Applied Power Electronics Conference , pp. 1399-1405, March 2013.
W. Inam, K.K. Afridi and D.J. Perreault, “High Efficiency Resonant dc/dc Converter Utilizing a Resistance Compression Network,” 2013 IEEE Applied Power Electronics Conference , pp. 1399-1405, March 2013.

... and reject conversion ratio variations (e.g., [5]). However, this results in asymmetrical current levels in the switches at the switching instants, with the switches in the leading leg turning off at high currents. The effective impedance of the rectifier in a resonant converter also often causes ch ...
Low Energy Arc Joining Process for Materials Sensitive to Heat
Low Energy Arc Joining Process for Materials Sensitive to Heat

... much more damaging because the weld metal drops through at the re-ignition point, creating a hole. When welding metal sheets with surface finishes, e.g. zincplated sheets, there is also a risk of the surface coating evaporating and burning away next to the joint and on the reverse side. With higher ...
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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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