A Battery-Free Tag for Wireless Monitoring of Heart Sounds
... and a more optimized antenna. The two microphones are used to generate three types of alarm: disconnection from the body, device malfunction, and patient emergency. One microphone faces up (away from the body) and the other faces down. The downward-facing microphone monitors heart sounds, while the ...
... and a more optimized antenna. The two microphones are used to generate three types of alarm: disconnection from the body, device malfunction, and patient emergency. One microphone faces up (away from the body) and the other faces down. The downward-facing microphone monitors heart sounds, while the ...
Enabling devices for a Power over Ethernet world
... 57VDC) at the hub. However, with significant voltage drops along the Ethernet cables, the PoE standard allows the minimum voltage at the powered devices to be as low as 30V. The nominal 48V can be derived from an AC/DC converter but also from an existing system 48V. In this case another high power i ...
... 57VDC) at the hub. However, with significant voltage drops along the Ethernet cables, the PoE standard allows the minimum voltage at the powered devices to be as low as 30V. The nominal 48V can be derived from an AC/DC converter but also from an existing system 48V. In this case another high power i ...
Electronic II (ECE235b) Power Amplifiers
... Large signal or power amplifiers primarily provide sufficient power to an output load to drive a speaker or some other power device, typically greater than 1W. The main features of a power amplifier are: 1) the circuits power efficiency, 2) the maximum amount of power that the circuit is capable of ...
... Large signal or power amplifiers primarily provide sufficient power to an output load to drive a speaker or some other power device, typically greater than 1W. The main features of a power amplifier are: 1) the circuits power efficiency, 2) the maximum amount of power that the circuit is capable of ...
1830 Joseph Henry in the US and Michael Faraday in England had
... (so if the voltage goes down, current goes up) because the power out is equal ...
... (so if the voltage goes down, current goes up) because the power out is equal ...
Question Bank
... 28. Compare moving coil and moving iron instruments based on any two salient features. 29. Mention any two importance of MC and MI instruments. 30. What are the advantages of Induction type energy meter? ...
... 28. Compare moving coil and moving iron instruments based on any two salient features. 29. Mention any two importance of MC and MI instruments. 30. What are the advantages of Induction type energy meter? ...
RHA_VSC_PEN_PIR - Industrial Controls Knowledge Base
... 3. Offset voltage and offset drift Offset voltage adds constant error to the circuit. For a simpler circuit design, external potentiometers should be avoided (except the ones for pressure calibration). Thus, an opamp with very low or ultra-low offset must be foreseen. In addition, the first stage an ...
... 3. Offset voltage and offset drift Offset voltage adds constant error to the circuit. For a simpler circuit design, external potentiometers should be avoided (except the ones for pressure calibration). Thus, an opamp with very low or ultra-low offset must be foreseen. In addition, the first stage an ...
PTH04070W: 3-A 3.3/5.5-V Input Adjustable
... sink. Their small size (0.5 × 0.4 in), high efficiency, and low cost makes these modules attractive for a variety of applications. The input voltage range of the PTH04070W is from 3 V to 5.5 V, allowing operation from either a 3.3-V or 5-V input bus. Using state-of-the-art switched-mode power-conver ...
... sink. Their small size (0.5 × 0.4 in), high efficiency, and low cost makes these modules attractive for a variety of applications. The input voltage range of the PTH04070W is from 3 V to 5.5 V, allowing operation from either a 3.3-V or 5-V input bus. Using state-of-the-art switched-mode power-conver ...
The Use And Misuse Of Circuit Protection Devices
... one-second pause between pulses. The second, the EFT or burst test, simulates switching transients that often are encountered in industrial environments, such as factory automation and process control. They may be caused by relay contact bounce or the interruption of inductive loads. Testing require ...
... one-second pause between pulses. The second, the EFT or burst test, simulates switching transients that often are encountered in industrial environments, such as factory automation and process control. They may be caused by relay contact bounce or the interruption of inductive loads. Testing require ...
Logic Gates PPT
... which the logic state flipped from 1 to 0. This threshold value is determined by the value of R2. Having a fixed threshold is fine if the system operated by the sensor should always activate at the same point. However in many cases it may be beneficial to vary this threshold value. A thermostat cont ...
... which the logic state flipped from 1 to 0. This threshold value is determined by the value of R2. Having a fixed threshold is fine if the system operated by the sensor should always activate at the same point. However in many cases it may be beneficial to vary this threshold value. A thermostat cont ...
digital system for power line frequency measurement
... average obtained after exactly 100 periods of 50 Hz power line signal. Afterward, the controller generates new start signal that starts the next counting sequence. The calculated frequency value is represented by 24-bit two's complement value as normalized value (like all other results in DSP) relat ...
... average obtained after exactly 100 periods of 50 Hz power line signal. Afterward, the controller generates new start signal that starts the next counting sequence. The calculated frequency value is represented by 24-bit two's complement value as normalized value (like all other results in DSP) relat ...
Transistor Amplifier – Voltage Gain
... charge). The Ptype transistor has the density of electrons in the conduction band exceeded by the density of the holes in the valence band; whereas, for an Ntype, the density of the holes in the valence band exceeded the density of the electrons in the conduction band. ...
... charge). The Ptype transistor has the density of electrons in the conduction band exceeded by the density of the holes in the valence band; whereas, for an Ntype, the density of the holes in the valence band exceeded the density of the electrons in the conduction band. ...
AN-202 A Digital Multimeter Using the ADD3501
... Supporting the ADD3501 is a DS75492 digit driver, an NSB5388 LED display, and an LM340 regulator for the VCC supply. A 2-V reference voltage-derived from the LM336 reference-diode circuitry permits the 3 1/2-digit system a 1 mV/LSD resolution (that is, the ADD3501's full-scale count of 1999 or 1999 ...
... Supporting the ADD3501 is a DS75492 digit driver, an NSB5388 LED display, and an LM340 regulator for the VCC supply. A 2-V reference voltage-derived from the LM336 reference-diode circuitry permits the 3 1/2-digit system a 1 mV/LSD resolution (that is, the ADD3501's full-scale count of 1999 or 1999 ...
Instruction Manual
... Bass Driver: The BD-4X contains a Bass Driver circuit that accurately recreates and injects Low frequency information back into the signal path. What that means in everyday terms is that the BD-4X will give more bass impact to your best compact discs or even your old tapes. Bass Equalization Circuit ...
... Bass Driver: The BD-4X contains a Bass Driver circuit that accurately recreates and injects Low frequency information back into the signal path. What that means in everyday terms is that the BD-4X will give more bass impact to your best compact discs or even your old tapes. Bass Equalization Circuit ...
ESBT STC03DE170 IN 3-PHASE AUXILIARY POWER SUPPLY
... For converters in which inductor current is continuous, controlling peak current is nearly equivalent to controlling average current. Therefore, when such converters employ current-mode control, the inductor can be treated as an error-voltage-controlled-current-source for the purposes of small-signa ...
... For converters in which inductor current is continuous, controlling peak current is nearly equivalent to controlling average current. Therefore, when such converters employ current-mode control, the inductor can be treated as an error-voltage-controlled-current-source for the purposes of small-signa ...
External Power Supplies: Energy Efficiency
... 2016) are slightly more stringent. The European Commission has not formally enacted these levels as a firm regulation such as ErPII, and it has not yet been decided whether to enact regulations with the Code of Conduct levels or to be consistent with the U.S. DoE Level VI requirements. ...
... 2016) are slightly more stringent. The European Commission has not formally enacted these levels as a firm regulation such as ErPII, and it has not yet been decided whether to enact regulations with the Code of Conduct levels or to be consistent with the U.S. DoE Level VI requirements. ...
Low Power, 350 MHz Voltage Feedback Amplifier AD8039-EP
... The AD8039-EP dual amplifier is a high speed (350 MHz) voltage feedback amplifier with an exceptionally low quiescent current of 1.0 mA per amplifier typical (1.5 mA maximum). Despite its low power and low cost, the amplifier provides excellent overall performance. Additionally, it offers a high sle ...
... The AD8039-EP dual amplifier is a high speed (350 MHz) voltage feedback amplifier with an exceptionally low quiescent current of 1.0 mA per amplifier typical (1.5 mA maximum). Despite its low power and low cost, the amplifier provides excellent overall performance. Additionally, it offers a high sle ...
buyer`s guide - Windows IT Pro
... to the unit’s battery runtime under your projected power requirements. Carefully read the vendor’s battery life specifications and consider the typical length of the power outages in your area. After you address the electrical concerns, consider the optional hardware available or the features that t ...
... to the unit’s battery runtime under your projected power requirements. Carefully read the vendor’s battery life specifications and consider the typical length of the power outages in your area. After you address the electrical concerns, consider the optional hardware available or the features that t ...
2SC4793
... responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. • TOSHIBA is continually working to improve the quality ...
... responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. • TOSHIBA is continually working to improve the quality ...
Power electronics
Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)