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AD2S83: 数据手册DataSheet 下载
AD2S83: 数据手册DataSheet 下载

... Ratiometric Tracking Conversion. This technique provides continuous output position data without conversion delay. It also provides noise immunity and tolerance of harmonic distortion on the reference and input signals. ...
Datalogic TL46-WL Contrast Sensor Instruction Manual
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... VDC ...
TDA9103
TDA9103

... outputs of the circuit are inhibited if it is too low. In order to have a very good powersupplyrejection, the circuit is internally powered by several internal voltage references (The unique typical value of which is 8V). Two of these voltage references are externally accessible, one for the vertica ...
Supplement
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... (c) Series resistance with 1/f current noise. If a noise current !!! (!) = ! ! is passed through a resistance RC, it will create a noise voltage !!! (!) = !!!! !. When this voltage is applied across a pore, it causes a noise current !!! (!) = !!!! ! !!! . (d) Fitting errors. Previous studies only wo ...
PAM2303 Description Pin Assignments
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... This formula has a maximum at VIN = 2VOUT, where IRMS = IOUT /2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that the capacitor manufacturer's ripple current ratings are often based on 2000 hours of life. This makes ...
Delphi DNM series Non-Isolated Point of Load
Delphi DNM series Non-Isolated Point of Load

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... There are still many areas that use electro-mechanical controllers, the simple fixed time types are relatively easy to maintain and parts are still available through various sources. These controllers work quite well in simple applications such as fixed time two phase intersections, mid block pedest ...
CA3130, CA3130A Datasheet
CA3130, CA3130A Datasheet

... current for the CA3130 Series Op Amps is typically 5pA at TA = 25oC when Terminals 2 and 3 are at a common-mode potential of +7.5V with respect to negative supply Terminal 4. Figure 3 contains data showing the variation of input current as a function of common-mode input voltage at TA = 25oC. These ...
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zr1000-1600 manual 11.1.04.indd

... other. A grounding- type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. Protect the power cord from being walked on or p ...
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... the lamp case without the need for the ballast transformer. It is possible to achieve over 80% total power efficiency in this configuration. In general, it is not easy to build an AC-DC LED driver board into the small bulb case while also meeting PF and THD requirements in the application. It is als ...
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... designs are the direct result of neglecting to consider where the signal currents were likely to flow. Although this has already been discussed in a previous section, the subject of current path identification is so crucial to good printed circuit board design that it's worth reviewing the main conc ...
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LM723QML Voltage Regulator (Rev. A)

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... The transfer function of an active filter can be viewed as the cascaded response of the filter transfer function and an amplifier transfer function. This article examines the phase shift of the filter transfer function itself. While filters are designed primarily for their amplitude response, the ph ...
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... The DS1080CL is a crystal multiplier with center spread-spectrum capability. An 8MHz to 16MHz crystal is connected to the X1 and X2 pins. Alternately, an 8MHz to 16MHz clock can be applied to X1 in place of the crystal. In such applications, X2 would be left open circuit. Using the CMSEL input, the ...
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AD7660 数据手册DataSheet下载

... The AD7660 is a 16-bit, 100 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. The part contains an internal conversion clock, error correction circuits, and both serial and parallel system interface ports. The AD7660 is hardware factory-calibr ...
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1 Purpose and scope 2 Power supply systems
1 Purpose and scope 2 Power supply systems

... c) The performance of the UPS-facility shall be dimensioned and matched to the size and type of load. Special care should be paid for loads with high in-rush current, reactive load or non-linear load. d) Major facilities may have the UPS dimensioned for degraded operation of the total facility. In t ...
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Pulse-width modulation



Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.
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