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LM34 - Precision Fahrenheit Temperature Sensor
LM34 - Precision Fahrenheit Temperature Sensor

... Note 2: Unless otherwise noted, these specifications apply: −50˚F ≤ Tj ≤ + 300˚F for the LM34 and LM34A; −40˚F ≤ Tj ≤ +230˚F for the LM34C and LM34CA; and +32˚F ≤ Tj ≤ + 212˚F for the LM34D. VS = +5 Vdc and ILOAD = 50 µA in the circuit of Figure 2; +6 Vdc for LM34 and LM34A for 230˚F ≤ Tj ≤ 300˚F. T ...
General Description Features
General Description Features

... licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for ...
New vacuum interrupters for contactors and switches
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... VS3/VS4 interrupters for switches Two vacuum interrupters have been developed by ABB Calor Emag Mittelspannung for use in switches: VS3 with a rated voltage of 12 kV, and VS4 with 24/36 kV. Both classes have the same outside dimensions as the VS2 interrupter 2 . Since, due to its extremely compact d ...
Lecture 3
Lecture 3

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... (a) If I1 = I1’ = I2 = I2’ = 0 and Iin = I0, then the noninverted transimpedance-mode and current-mode biquadratic lowpass filters can be obtained. (b) If I0 = I2 = I2’ = 0 and Iin = I1 or I1’, then the non-inverted or inverted transimpedance-mode and currentmode biquadratic bandpass filters can be ...
High-Efficiency 30-A Synchronous Buck SWIFT Converter with Eco
High-Efficiency 30-A Synchronous Buck SWIFT Converter with Eco

... voltage range, very low external component count, DCAP™ mode control for super fast transient, autoskip mode operation, internal soft-start control, selectable frequency, and no need for compensation. The conversion input voltage ranges from 1.5 V to 15 V, the supply voltage range is from 4.5 V to 2 ...
IEETESLA 36KB Oct 31 2000 09:41:54 PM - hot
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TL431A-Q1 数据资料 dataSheet 下载
TL431A-Q1 数据资料 dataSheet 下载

... ‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to ...
Design of 1.8-V CMOS Polyphase Filter for Dual-Mode Bluetooth/ZigBee Transceiver Phanumas Khumsat
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... which electrical power in one circuit is transformed into electric power of the same frequency in another circuit. It can raise (step up) or lower (step down) the voltage in a circuit but with a corresponding decrease or increase in current. Physically, a transformer is mutual induction between two ...
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LinCMOS Precision Quad Operational
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... TLC27L4 and TLC27L9. The devices also exhibit low voltage single-supply operation and ultra-low power consumption, making them ideally suited for remote and inaccessible battery-powered applications. The common-mode input voltage range includes the negative rail. A wide range of packaging options is ...
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... SEL (Pin 2): 4.1V/4.2V Battery Selection Input Pin. Grounding this pin will set the output float voltage to 4.1V per cell, while connecting to VCC will set the voltage to 4.2V per cell. For the LTC1732-4.2, the SEL pin must be connected to VCC. CHRG (Pin 3): Open-Drain Charge Status Output. When the ...
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"Class-A2" ultra-low-loss magnetic ballast for T5 fluorescent lamps
"Class-A2" ultra-low-loss magnetic ballast for T5 fluorescent lamps

... 4) Less ballast loss than the electronic counterparts. The requirements 1) and 2) can be met by using electronic starters [9]–[13]. Electronic starters, developed in late 1990s for T8 lamps, can be applied to the T5 lamps in general. End-oflife detection has been a common feature among some electron ...
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EECS 373 Design of Microprocessor-Based Systems
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MAX3668 +3.3V, 622Mbps SDH/SONET Laser Driver with Automatic Power Control General Description
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... laser cathode, minimize the parasitic capacitance associated with this pin by using an inductor to isolate the BIAS pin from the laser cathode. ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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