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ISL59601-05
ISL59601-05

... Typical Performance Over 1000 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Typical Performance Over 2000 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
M48Z02
M48Z02

... ICC transients, including those produced by output switching, can produce voltage fluctuations, resulting in spikes on the VCC bus. These transients can be reduced if capacitors are used to store energy which stabilizes the VCC bus. The energy stored in the bypass capacitors will be released as low ...
3 - Texas Instruments
3 - Texas Instruments

... the contrary, close inspection of these transducer interface circuits divulge a different story. The sensing element’s output could be a fairly high voltage (hundreds of mV to several volts), however, the delta output voltages that represent a change in temperature, pressure, light, etc., is usually ...
Ramp/Soak Process Controller E5CK-T
Ramp/Soak Process Controller E5CK-T

... alarm 3, LBA, error 1 (input error), and error 2 (A/D converter error) output functions are available. These functions are assigned to control outputs 1 and 2 and auxiliary outputs 1 and 2. The assignment destination of each output function is restricted. Refer to the tables provided under the headi ...
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters

... the contrary, close inspection of these transducer interface circuits divulge a different story. The sensing element’s output could be a fairly high voltage (hundreds of mV to several volts), however, the delta output voltages that represent a change in temperature, pressure, light, etc., is usually ...
ADM6339 数据手册DataSheet 下载
ADM6339 数据手册DataSheet 下载

TDC3000X Galvanic Isolation/Intrinsic Safety Field Termination
TDC3000X Galvanic Isolation/Intrinsic Safety Field Termination

... proximity detector input from a hazardous area. The MU-GDID12/82 provides two reed-contact outputs; one contact serves the DI I/O processor and the second contact may be routed through the optional Marshalling Panel. This second output is useful for applications where the status of a switch or proxi ...
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... into low voltage direct current. The low voltage direct current is fed to an oscillator 96 comprising three high ...
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... To ensure that the manganin sensing element does not exceed 125°C under worst case operating conditions, please read and follow the guidelines in the mounting and derating sections of this data sheet. Tighten all connections on the shunt per the torque specifications given in the mechanical dimension ...
M750 Display Unit
M750 Display Unit

... The M750 display unit is a highly accurate and stable digital process indicator that accepts all commonly used process signals. The unit can be used 'stand alone' or, with the Modbus serial communications, as part of a larger system. Option Pods may be plugged into the M750 base unit, without the ne ...
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AP7176B Description Pin Assignments

... Layout Consideration For good ground loop and stability, the input and output capacitors should be located close to the input, output, and ground pins of the device. No other application circuit is connected within the loop. Avoid using vias within ground loop. If vias must be used, multiple vias sh ...
M750 Display Unit
M750 Display Unit

... The M750 display unit is a highly accurate and stable digital process indicator that accepts all commonly used process signals. The unit can be used 'stand alone' or, with the Modbus serial communications, as part of a larger system. Option Pods may be plugged into the M750 base unit, without the ne ...
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... In order to account for the variations in the reference and offset voltage between each LDO, an external control loop must be added to ensure equal distribution of current between the two LDOs. This loop is created by the introduction of an op amp and sense resistors, as shown in Figure 3. The volta ...
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... responses to three different load capacitors (0 µF, 560 µF, and 1410 µF). Since inrush current slew rate is programmed, it ramps up at a programmed fixed rate until the CIMAX capacitor is fully charged. Different charging times with the three capacitors produce different shapes of inrush current. Fi ...
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... Save time obtaining “As Found” and “As Left” To quickly obtain “As Found” and “As Left” calibration data, use the Model 434’s Auto-Chek to automatically output steps matching the input of the instrument being checked. Choose steps of 10, 25, 50 or 100% percent of range, corresponding to ten, five, t ...
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LM2596 SIMPLE SWITCHER(RM) Power Converter 150 kHz 3A

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20 V, 500 mA, Low Noise LDO Regulator with Soft Start ADP7105

... that operates from 3.3 V to 20 V and provides up to 500 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed-signal circuits operating from 1.22 V to 19 V rails. Using an advanced proprietary architecture, the ADP7105 provides high power supp ...
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... After every mains reset the SMART interface auto­ matically checks for an installed sensor. With the sensor installed the PCA T8 ECO lp x automatically runs in the constant lux level mode. ON/OFF switch via mains, switchDIM or DSI signal. DSI signal = 0 switches off, DSI signal ≥ 1 switches on. With ...
quadrature clock converter
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SKY65016-92LF 数据资料DataSheet下载
SKY65016-92LF 数据资料DataSheet下载

attention all bidders
attention all bidders

... Normal Conditions: Supply the load with ac power flowing from the normal ac power input terminals, through the rectifier-charger and inverter, with the battery connected in parallel with the rectifier-charger output. Abnormal Supply Conditions: If normal ac supply deviates from specified and adjusta ...
PID Control - Control and Dynamical Systems
PID Control - Control and Dynamical Systems

... a relay as shown in Figure 10.5a. For many systems there will then be an oscillation, as shown in Figure 10.5b, where the relay output u is a square wave and the process output y is close to a sinusoid. Notice that the process input and output have opposite phase and that an oscillation with constan ...
AN-9005 Driving and Layout Design for Fast Switching
AN-9005 Driving and Layout Design for Fast Switching

... signals to required levels to drive the power MOSFET and provides electrical isolation, when required, between the power MOSFET and the logic level control circuit, such as high-side switches on bridge topologies. The primary function of a driver is to switch a MOSFET from off state to on state and ...
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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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