Ultra Low Power Boost Converter with Battery Management for
... The bq25504 was designed with the flexibility to support a variety of energy storage elements. The availability of the sources from which harvesters extract their energy can often be sporadic or time-varying. Systems will typically need some type of energy storage element, such as a rechargeable bat ...
... The bq25504 was designed with the flexibility to support a variety of energy storage elements. The availability of the sources from which harvesters extract their energy can often be sporadic or time-varying. Systems will typically need some type of energy storage element, such as a rechargeable bat ...
Cellular & PCS Technology - Lyle School of Engineering
... – For the case where the impulse is a voltage, its “area” is stated as one volt-second. When the impulse is a fluid flow quantity like liters/second, its “area” is stated as one liter. – Symbols used for this waveform are: u0(t) or (t) or I(t). ...
... – For the case where the impulse is a voltage, its “area” is stated as one volt-second. When the impulse is a fluid flow quantity like liters/second, its “area” is stated as one liter. – Symbols used for this waveform are: u0(t) or (t) or I(t). ...
ECE 340 Lecture 28 : Photodiodes • How do the I
... • Photons with E < EG are not absorbed. • Photons with E >> EG are absorbed near the surface where recombination is high. Let’s use a III-V material… • We can tune the bandgap to absorb what we desire to detect. • By using a heterojunction, we can limit the surface recombination by passing photons t ...
... • Photons with E < EG are not absorbed. • Photons with E >> EG are absorbed near the surface where recombination is high. Let’s use a III-V material… • We can tune the bandgap to absorb what we desire to detect. • By using a heterojunction, we can limit the surface recombination by passing photons t ...
TPS65021 数据资料 dataSheet 下载
... voltage, peripheral, I/O and memory rails in a processor based system. All three step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents. The TPS65021 also integrates two general-purpose 200 mA LDO voltage regulators, which a ...
... voltage, peripheral, I/O and memory rails in a processor based system. All three step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents. The TPS65021 also integrates two general-purpose 200 mA LDO voltage regulators, which a ...
LTC3827-1 - Low IQ, Dual, 2-Phase
... The 80μA no-load quiescent current extends operating life in battery-powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3827-1 features a precision 0.8V reference and a power good output indicator. A wi ...
... The 80μA no-load quiescent current extends operating life in battery-powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3827-1 features a precision 0.8V reference and a power good output indicator. A wi ...
Pulsing a Laser Diode
... The power rating of the termination resistor should also be addressed. At full output, the LDP-3811 pulsed current source can deliver 12.5W, most of it going to the load-matching resistor. The power rating of this resistor must be adequate to handle the maximum current at the duty cycle that is expe ...
... The power rating of the termination resistor should also be addressed. At full output, the LDP-3811 pulsed current source can deliver 12.5W, most of it going to the load-matching resistor. The power rating of this resistor must be adequate to handle the maximum current at the duty cycle that is expe ...
LT8630 - 100V, 0.6A Synchronous Micropower
... of 3V to 100V makes the LT8630 suitable for regulating power from a wide variety of sources, including automotive and industrial systems and 36V to 72V telecom supplies. Variable frequency boundary mode switching maximizes efficiency across a wide range of input voltages. Low ripple Burst Mode opera ...
... of 3V to 100V makes the LT8630 suitable for regulating power from a wide variety of sources, including automotive and industrial systems and 36V to 72V telecom supplies. Variable frequency boundary mode switching maximizes efficiency across a wide range of input voltages. Low ripple Burst Mode opera ...
Pdf - Text of NPTEL IIT Video Lectures
... So by knowing this colour code one can easily understand the value of a given resistor and can make use of them in the different circuits. Now let me explain little more about the tolerance. The tolerance of the resistor is also an important property of the resistor to consider in different applica ...
... So by knowing this colour code one can easily understand the value of a given resistor and can make use of them in the different circuits. Now let me explain little more about the tolerance. The tolerance of the resistor is also an important property of the resistor to consider in different applica ...
v. filter design example - Faculdade de Engenharia
... like load or line changes. According to the paper proposition, the filter will be designed considering only the differential mode EMI noise produced by the converter. For this type of filter, not only the required attenuation but also other restrictions must be taken into account. For example, VDE s ...
... like load or line changes. According to the paper proposition, the filter will be designed considering only the differential mode EMI noise produced by the converter. For this type of filter, not only the required attenuation but also other restrictions must be taken into account. For example, VDE s ...
MAX3262 1Gbps, High-Speed Limiting Amplifier with Chatter
... The MAX3262 is an integrated limiting amplifier intended for high-frequency fiber-optic applications. The circuit connects to typical transimpedance amplifiers found within a fiber-optic link. The linear signal output from a transimpedance amplifier can contain significant amounts of noise, and may ...
... The MAX3262 is an integrated limiting amplifier intended for high-frequency fiber-optic applications. The circuit connects to typical transimpedance amplifiers found within a fiber-optic link. The linear signal output from a transimpedance amplifier can contain significant amounts of noise, and may ...
Electrical Circuits
... • Although not practical in every application, the series connection is crucial as a part of most electrical apparatuses. – Switches • Necessary to open and close entire circuits. ...
... • Although not practical in every application, the series connection is crucial as a part of most electrical apparatuses. – Switches • Necessary to open and close entire circuits. ...
AD9709 数据手册DataSheet 下载
... independently using two external resistors, or IOUTFS for both DACs can be set by using a single external resistor. See the Gain Control Mode section for important date code information on this feature. The DACs utilize a segmented current source architecture combined with a proprietary switching te ...
... independently using two external resistors, or IOUTFS for both DACs can be set by using a single external resistor. See the Gain Control Mode section for important date code information on this feature. The DACs utilize a segmented current source architecture combined with a proprietary switching te ...
full text)
... at room temperature using a Rucker & Kolls 683A Semi-Automatic Wafer Prober with a Hewlett-Packard 3478A Multimeter. The finite-element analysis model was used to determine from the measured resistances. Then the wafers were diced, and junction I-V curves were measured of 11 junctions at 4.2 K in li ...
... at room temperature using a Rucker & Kolls 683A Semi-Automatic Wafer Prober with a Hewlett-Packard 3478A Multimeter. The finite-element analysis model was used to determine from the measured resistances. Then the wafers were diced, and junction I-V curves were measured of 11 junctions at 4.2 K in li ...
SP-35X Signal Powered DC Volt Meter 3 1/2 Digit 0.48” LCD
... We are pleased to offer suggestions on the use of our various products either by way of printed matter or through direct contact with our sales/application engineering staff. However, since we have no control over the use of our products once they are shipped, NO WARRANTY WHETHER OF MERCHANTABILITY, ...
... We are pleased to offer suggestions on the use of our various products either by way of printed matter or through direct contact with our sales/application engineering staff. However, since we have no control over the use of our products once they are shipped, NO WARRANTY WHETHER OF MERCHANTABILITY, ...
Configured, uncommitted and PTH array Eurocard
... /eject mechanism at the front of the board and either 64/64 or 96/96 DIN 41612 connectors at both ends. 3U and 6U linear tracked versions for J1/J2 VMEbus systems are manufactured in either doublesided, three or six layer multilayer construction. Produced in various configurations, the top of the ra ...
... /eject mechanism at the front of the board and either 64/64 or 96/96 DIN 41612 connectors at both ends. 3U and 6U linear tracked versions for J1/J2 VMEbus systems are manufactured in either doublesided, three or six layer multilayer construction. Produced in various configurations, the top of the ra ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.