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Chapter 12 Alternating-Current Circuits
Chapter 12 Alternating-Current Circuits

A Novel Piezoelectric Microtransformer for Autonmous Sensors Applications  Senior Member, IEEE
A Novel Piezoelectric Microtransformer for Autonmous Sensors Applications Senior Member, IEEE

... For micro transformers made with a single piezoelectric material, common to the primary and secondary and submitted to ultrasonic waves of variable frequency, the measured secondary (output) voltage V1 is in the order of 5 mV (for the resonant frequency of mode 3). However, in the case of micro tran ...


... can be truncated to an odd length, , with sufficient accuracy. The resulting vector space is and has coordinate axes corresponding to rms frequency components. Using this vector space, a periodic waveform is represented by the constant, -length vector . has an odd number of elements, the first of wh ...
MAX4473 Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications General Description
MAX4473 Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications General Description

... • Accuracy: A high RSENSE value allows lower currents to be measured more accurately because input offset voltages become less significant when the sense voltage is larger. For best performance, select RSENSE to provide approximately 100mV of sense voltage for the full-scale current in each applicat ...
TPS4021x 4.5-V to 52-V Input Current Mode Boost Controller (Rev. F)
TPS4021x 4.5-V to 52-V Input Current Mode Boost Controller (Rev. F)

HIS – Highly Integrated Switchgear up to 550 kV, 63 kA
HIS – Highly Integrated Switchgear up to 550 kV, 63 kA

... with the film insulation provides insulation against high voltage. The high-voltage connection to the switchgear is established via the primary conductor, which is supported by a gastight bushing. The secondary connections are routed via a gastight bushing plate to the terminal box. Resistive-capaci ...
PDF
PDF

... and current is chopped so well suited for various renewable energy sources radio interference is low. such as photovoltaic cell, fuel cell etc. For active Due to high THD, power conversion from AC to DC and then DC to large, costly and THD is low, so simple circuit AC as per requirement, the cascade ...
Bipolar Transistor Basics
Bipolar Transistor Basics

Designing a tamper proof energy meter with Kinetis KM34
Designing a tamper proof energy meter with Kinetis KM34

... Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale assume any liability arising out of the application or use of ...
Student Biographies
Student Biographies

... terminal device like a resistor but the two terminals are not interchangeable. We will start by describing an “ideal” diode and then look at how closely a real diode approximates the ideal situation. We will be considering silicon diodes throughout this book. As electrical engineers we can analyze d ...
RHD5903 - Aeroflex Microelectronic Solutions
RHD5903 - Aeroflex Microelectronic Solutions

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building series and parallel circuits
building series and parallel circuits

... In this activity you'll have a chance to wire the fancy switch used to turn on a hallway light from either end of the corridor. The two switches are actually wired to each other as well as to the light and power source. These switches are called three-way or single-pole, double-throw (SPDT) switches ...
Analysis of a floating vs. grounded output
Analysis of a floating vs. grounded output

... A difference in potential, whether it is a few millivolts between PC data communication lines or hundreds of volts in transmission distribution networks, means that current can flow between those two points. These variations in potential cause what are called “ground loops”throughout a system. As s ...
Chapter 3
Chapter 3

... If we keep the same resistance in a circuit but vary the voltage, the current will vary. The circuit in Fig. 3–1 demonstrates this idea. The applied voltage V can be varied from 0 to 12 V, as an example. The bulb has a 12-V filament, which requires this much voltage for its normal current to light w ...
PSA_modulewise_note(1)
PSA_modulewise_note(1)

... from the paper tape. Telemetering data comes to the computer either as analogue signals representing line power flows, plant outputs or as signal bits indicating switch or isolator positions. The system is entirely automatic, paper tape stores all the basic data required, and finally asking the stat ...
MAX1714 High-Speed Step-Down Controller for Notebook Computers General Description
MAX1714 High-Speed Step-Down Controller for Notebook Computers General Description

... input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The MAX1714 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Effi ...
TPS51200 数据资料 dataSheet 下载
TPS51200 数据资料 dataSheet 下载

... used to turn on or turn off the device. During tracking startup, VO follows REFOUT once REFIN voltage is greater than 0.39 V. REFIN follows the rise of VDDQ rail via a voltage divider. The typical soft-start time for the VDDQ rail is approximately 3 ms, however it may vary depending on the system co ...
Datasheet TOE 8951 to TOE 8952
Datasheet TOE 8951 to TOE 8952

... parameters and operating functions even after many years of use. Display The set and measured values for voltage, current and power as well as the menu control functions are output on a 2-row LCD with 20 characters/row. Highest degree of safety is guaranteed for your applications by comprehensive pr ...
A 175-mvV multiply-accumulate unit using an adaptive supply
A 175-mvV multiply-accumulate unit using an adaptive supply

Aalborg Universitet Stability Constrained Efficiency Optimization for Droop Controlled DC-DC Conversion
Aalborg Universitet Stability Constrained Efficiency Optimization for Droop Controlled DC-DC Conversion

Fuses - E Rated
Fuses - E Rated

... insulation level of the system. If the fuse voltage rating is not permitted to exceed 140% of the system voltage, there should not be a problem. This does not mean that a higher rated fuse cannot be used, but points out that one must be assured that the system insulation level (BIL) will handle the ...
Automotive High Brightness LED Control Based on the
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4.0 A, 40 V NPN Bipolar Power Transistor
4.0 A, 40 V NPN Bipolar Power Transistor

... to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, ...
High Voltage Direct Current Transmission –
High Voltage Direct Current Transmission –

... reduced the number of series-connected thyristors per valve. The development of light-triggered thyristors has further reduced the overall number of components and thus contributed to increased reliability. Innovations in almost every other area of HVDC have been constantly adding to the reliability ...
A 10Gb/s wide-band current-mode logic I/O interface for high
A 10Gb/s wide-band current-mode logic I/O interface for high

... may become large enough to smear the differential output signal. This effect becomes serious especially when the circuit amplifiers a small signal and the DC offset also is amplified at the same time. The DC offset cancellation circuit is necessary because the offset voltages contributed from device ...
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Surge protector



A surge protector (or surge suppressor) is an appliance/device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or by shorting to ground any unwanted voltages above a safe threshold. This article primarily discusses specifications and components relevant to the type of protector that diverts (shorts) a voltage spike to ground; however, there is some coverage of other methods.The terms surge protection device (SPD), or transient voltage surge suppressor (TVSS), are used to describe electrical devices typically installed in power distribution panels, process control systems, communications systems, and other heavy-duty industrial systems, for the purpose of protecting against electrical surges and spikes, including those caused by lightning. Scaled-down versions of these devices are sometimes installed in residential service entrance electrical panels, to protect equipment in a household from similar hazards.Many power strips have basic surge protection built in; these are typically clearly labeled as such. However, power strips that do not provide surge protection are sometimes erroneously referred to as ""surge protectors"".
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