SP3491 数据资料DataSheet下载
... The SP3490 and the SP3491 are +3.3V low power full duplex transceivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with the Sipex SP490 and SP491 devices as well as popular industry standards. The SP3490 and the SP3491 feature Sipex ...
... The SP3490 and the SP3491 are +3.3V low power full duplex transceivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with the Sipex SP490 and SP491 devices as well as popular industry standards. The SP3490 and the SP3491 feature Sipex ...
Harmonic Analysis in Electrical Power System with Electric Arc
... power as compared to three phase and therefore low power arc furnaces can be realized by using single phase. A three phase arc furnace is a highly unbalanced, time varying, non-linear load causing problem to the power system quality whereas single phase has all similar property except the unbalancin ...
... power as compared to three phase and therefore low power arc furnaces can be realized by using single phase. A three phase arc furnace is a highly unbalanced, time varying, non-linear load causing problem to the power system quality whereas single phase has all similar property except the unbalancin ...
MAX8798 Internal-Switch Boost Regulator with Integrated 3-Channel Scan Driver for TFT LCDs
... memory; an I2C interface; and a high-voltage, level-shifting scan driver. The device is optimized for thin-film transistor (TFT) liquid-crystal display (LCD) applications. The step-up DC-DC converter provides the regulated supply voltage for panel source driver ICs. The high switching frequency allo ...
... memory; an I2C interface; and a high-voltage, level-shifting scan driver. The device is optimized for thin-film transistor (TFT) liquid-crystal display (LCD) applications. The step-up DC-DC converter provides the regulated supply voltage for panel source driver ICs. The high switching frequency allo ...
GM862-QUAD / PY Hardware User Guide
... The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GM862-QUAD / PY module. In this document all the basic functions of a mobile phone will be taken into account; for each one of them a proper hardware solution will be suggested and e ...
... The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GM862-QUAD / PY module. In this document all the basic functions of a mobile phone will be taken into account; for each one of them a proper hardware solution will be suggested and e ...
pptx
... power delivery models, I/O buffer models, and simulator dependent control elements. The IBIS organization defines standards for distributing interconnect models and I/O buffer models. Ultimately these models are instantiated in simulation netlists as instances of SPICE or AMS elements that have term ...
... power delivery models, I/O buffer models, and simulator dependent control elements. The IBIS organization defines standards for distributing interconnect models and I/O buffer models. Ultimately these models are instantiated in simulation netlists as instances of SPICE or AMS elements that have term ...
A Radial-Ulnar Deviation and Wrist-Finger Flexion Analysis
... across the muscles which make a part of the signalling process for the muscle fibres to contract. It can be measured by applying conductive elements or electrodes to the skin surface, or invasively within the muscle. It is non-invasive and can be conducted very easily with minimal risk to the subjec ...
... across the muscles which make a part of the signalling process for the muscle fibres to contract. It can be measured by applying conductive elements or electrodes to the skin surface, or invasively within the muscle. It is non-invasive and can be conducted very easily with minimal risk to the subjec ...
LP2985LV-N Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and
... ceramics. This means that while it may be possible to find a Tantalum capacitor with an ESR value within the stable range, it would have to be larger in capacitance (which means bigger and more costly) than a ceramic capacitor with the same ESR value. It should also be noted that the ESR of a typica ...
... ceramics. This means that while it may be possible to find a Tantalum capacitor with an ESR value within the stable range, it would have to be larger in capacitance (which means bigger and more costly) than a ceramic capacitor with the same ESR value. It should also be noted that the ESR of a typica ...
R s
... The sine-wave signal is completely characterized by its peak value (or rms value which is the peak / 21/2), frequency (w in rad/s of f in Hz; w = 2pf and f = 1/T, where T is the period is seconds), and phase with respect to an arbitrary reference time. Analog signals have magnitudes that can ass ...
... The sine-wave signal is completely characterized by its peak value (or rms value which is the peak / 21/2), frequency (w in rad/s of f in Hz; w = 2pf and f = 1/T, where T is the period is seconds), and phase with respect to an arbitrary reference time. Analog signals have magnitudes that can ass ...
P84025
... Wheelock products must be used within their published specifications and must be PROPERLY specified, applied, installed, operated, maintained and operationally tested in accordance with these instructions at the time of installation and at least twice a year or more often and in accordance with loca ...
... Wheelock products must be used within their published specifications and must be PROPERLY specified, applied, installed, operated, maintained and operationally tested in accordance with these instructions at the time of installation and at least twice a year or more often and in accordance with loca ...
A Charge Pump Circuit by using Voltage
... turned more effectively by the high voltage generated in the next stage. More complicated circuit scheme for charge pump have been applied to increase the voltage gain, such as all PMOS charge pump for low voltage operation [9], CMOS charge pump [10], charge transfer switches in combination with pum ...
... turned more effectively by the high voltage generated in the next stage. More complicated circuit scheme for charge pump have been applied to increase the voltage gain, such as all PMOS charge pump for low voltage operation [9], CMOS charge pump [10], charge transfer switches in combination with pum ...
AAT3150 - Skyworks
... given input will be determined by the difference between VOUT and the actual forward voltage (VF) of the LED being driven. Since the constant current levels for the AAT3150 are programmable, no PWM (pulse width modulation) or additional control circuitry are needed to control LED brightness. This fe ...
... given input will be determined by the difference between VOUT and the actual forward voltage (VF) of the LED being driven. Since the constant current levels for the AAT3150 are programmable, no PWM (pulse width modulation) or additional control circuitry are needed to control LED brightness. This fe ...
OPA369 OPA2369
... The OPAx369 operates on a supply voltage as low as 1.8V and has true rail-to-rail operation that makes it useful for a wide range of applications. The zerø-crossover feature resolves the problem of input crossover distortion that becomes very prominent in low voltage (< 3V), rail-to-rail input appli ...
... The OPAx369 operates on a supply voltage as low as 1.8V and has true rail-to-rail operation that makes it useful for a wide range of applications. The zerø-crossover feature resolves the problem of input crossover distortion that becomes very prominent in low voltage (< 3V), rail-to-rail input appli ...
AN1048/D RC Snubber Networks For Thyristor Power Control and
... The simple snubber consists of a series resistor and capacitor placed around the thyristor. These components along with the load inductance form a series CRL circuit. Snubber theory follows from the solution of the circuit’s differential equation. Many RC combinations are capable of providing accept ...
... The simple snubber consists of a series resistor and capacitor placed around the thyristor. These components along with the load inductance form a series CRL circuit. Snubber theory follows from the solution of the circuit’s differential equation. Many RC combinations are capable of providing accept ...
XTR105 - Iiic.Cc
... Transistor Q1 conducts the majority of the signal-dependent 4-20mA loop current. Using an external transistor isolates the majority of the power dissipation from the precision input and reference circuitry of the XTR105, maintaining excellent accuracy. Since the external transistor is inside a feedb ...
... Transistor Q1 conducts the majority of the signal-dependent 4-20mA loop current. Using an external transistor isolates the majority of the power dissipation from the precision input and reference circuitry of the XTR105, maintaining excellent accuracy. Since the external transistor is inside a feedb ...
Introduction to WEBENCH Power Designer
... Which control mode to use for various applications? – COT cheap and easy, always stable but variable frequency & ripple – Voltage mode most common in Buck, cheap and easy low component count – Current mode most common for CCM in Boost, Buck-Boost, SEPIC, Flyback, very good performance but need ...
... Which control mode to use for various applications? – COT cheap and easy, always stable but variable frequency & ripple – Voltage mode most common in Buck, cheap and easy low component count – Current mode most common for CCM in Boost, Buck-Boost, SEPIC, Flyback, very good performance but need ...
TPS548B22 1.5-V to 18-V VIN, 4.5-V to 22-V VDD, 25
... The TPS548B22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems. This device features full differential sense, T ...
... The TPS548B22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems. This device features full differential sense, T ...
Número de publicación
... Sets of bus bars (2a-c,3a-c) each fit in separate stacked bus bar casings (4,5) to form a bar sector on the side for a main casing (1). The bus bar casings are symmetrical and of equal size. Bus bar isolating links (10) each connect to the sets of bus bars and use ducts (11) to make electrical conta ...
... Sets of bus bars (2a-c,3a-c) each fit in separate stacked bus bar casings (4,5) to form a bar sector on the side for a main casing (1). The bus bar casings are symmetrical and of equal size. Bus bar isolating links (10) each connect to the sets of bus bars and use ducts (11) to make electrical conta ...
LEEP 1000 Workstation Operating Manual, 110v
... contact with tissue. Tight pressure may cause desiccation of the tissue and will delay the start of the cutting effect. ...
... contact with tissue. Tight pressure may cause desiccation of the tissue and will delay the start of the cutting effect. ...
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.