AD9945 数据手册DataSheet 下载
... CCD’s black level. During the optical black (shielded) pixel interval on each line, the ADC output is compared with the fixed black level reference, selected by the user in the clamp level register. The resulting error signal is filtered to reduce noise, and the correction value is applied to the AD ...
... CCD’s black level. During the optical black (shielded) pixel interval on each line, the ADC output is compared with the fixed black level reference, selected by the user in the clamp level register. The resulting error signal is filtered to reduce noise, and the correction value is applied to the AD ...
OPA604APG4 - Texas Instruments
... Op amp distortion can be considered an internal error source which can be referred to the input. Figure 2 shows a circuit which causes the op amp distortion to be 101 times greater than normally produced by the op amp. The addition of R3 to the otherwise standard noninverting amplifier configuration ...
... Op amp distortion can be considered an internal error source which can be referred to the input. Figure 2 shows a circuit which causes the op amp distortion to be 101 times greater than normally produced by the op amp. The addition of R3 to the otherwise standard noninverting amplifier configuration ...
OP200
... to offer OP77 type precision performance. Available in the industry standard 8-lead pinout, the OP200 combines precision performance with the space and cost savings offered by a dual amplifier. ...
... to offer OP77 type precision performance. Available in the industry standard 8-lead pinout, the OP200 combines precision performance with the space and cost savings offered by a dual amplifier. ...
UM0242
... to supply various voltages by selecting appropriate resistance from the resistive network present at the adjust pin of the regulator. Different voltages and loads can be selected from the PC software as well as through switches present on the board. LEDs are provided on the board to indicate the var ...
... to supply various voltages by selecting appropriate resistance from the resistive network present at the adjust pin of the regulator. Different voltages and loads can be selected from the PC software as well as through switches present on the board. LEDs are provided on the board to indicate the var ...
Dc motors - WordPress.com
... 1. Vary the voltage supplied to the armature circuit while holding the field constant. 2. Vary the field current while holding the armature supply voltage constant. ...
... 1. Vary the voltage supplied to the armature circuit while holding the field constant. 2. Vary the field current while holding the armature supply voltage constant. ...
halaman pengesahan - (COT) Publications
... With a PWM converter connected in the rotor circuit, the rotor currents can be controlled in a desired phase, frequency and magnitude. This enables reversible flow of active power in the rotor and the system would be operated in sub-synchronous and super-synchronous speed. The dc link capacitor acts ...
... With a PWM converter connected in the rotor circuit, the rotor currents can be controlled in a desired phase, frequency and magnitude. This enables reversible flow of active power in the rotor and the system would be operated in sub-synchronous and super-synchronous speed. The dc link capacitor acts ...
Models of disturbances in power networks for testing frequency
... capacitors banks switching, active protection or atmospheric discharge. The second group is made of disturbances that modify the spectrum in correlation with fundamental component. These disturbances include: harmonics and interharmonics (and subharmonics in particular), notch-type disturbances, ...
... capacitors banks switching, active protection or atmospheric discharge. The second group is made of disturbances that modify the spectrum in correlation with fundamental component. These disturbances include: harmonics and interharmonics (and subharmonics in particular), notch-type disturbances, ...
ESD0P4RFL
... For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expect ...
... For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expect ...
EO24881888
... accordingly to such an extent that it can cancel the effect of the supply voltage disturbance. Thus the output voltage keeps unchanged. The feedback of the averaged inductor voltage is used to correct the disturbance of the load current. The inductor voltage is proportional to the rate of change of ...
... accordingly to such an extent that it can cancel the effect of the supply voltage disturbance. Thus the output voltage keeps unchanged. The feedback of the averaged inductor voltage is used to correct the disturbance of the load current. The inductor voltage is proportional to the rate of change of ...
Subhashish Bhattacharya, NC State University a. High Power
... Objectives: To develop a Medium Voltage Gate Drives to enable fast switching of 10 kV SiC power transistors with minimum isolation voltage of 15 kV, should include desaturation protection, junction temperature protection and low capacitance power supply Major Milestones: Fully functional Medium Volt ...
... Objectives: To develop a Medium Voltage Gate Drives to enable fast switching of 10 kV SiC power transistors with minimum isolation voltage of 15 kV, should include desaturation protection, junction temperature protection and low capacitance power supply Major Milestones: Fully functional Medium Volt ...
Permanent magnet synchronous generator for wind turbines
... Therefore, the electrical machine can have a response similar to the natural inertia. Fig. 4 depicts the additional control loop in case to use a torque reference where can define the synthetic inertia constant. Some authors include a low-pass filter to reduce the noise of the frequency measurement ...
... Therefore, the electrical machine can have a response similar to the natural inertia. Fig. 4 depicts the additional control loop in case to use a torque reference where can define the synthetic inertia constant. Some authors include a low-pass filter to reduce the noise of the frequency measurement ...
Which Transformer?
... There are three basic styles of transformers used in the suspended scaffold industry; buck/boost, step-up, and step-down. Buck/Boost transformers are the most common transformers used in suspended scaffolding. As the name implies these transformers can have two different uses. “Bucking” power is don ...
... There are three basic styles of transformers used in the suspended scaffold industry; buck/boost, step-up, and step-down. Buck/Boost transformers are the most common transformers used in suspended scaffolding. As the name implies these transformers can have two different uses. “Bucking” power is don ...
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.