Speedtronic Control Calibrator Handbook
... "Nulling" or "balancing" the summing junction. 1. Within the stable operating range of an operational amplifier, the sum of all currents to the summing junction is zero. 2. Many of the amplifiers used herein have integrating feedbacks. This means that, if the net current to the summing junction is n ...
... "Nulling" or "balancing" the summing junction. 1. Within the stable operating range of an operational amplifier, the sum of all currents to the summing junction is zero. 2. Many of the amplifiers used herein have integrating feedbacks. This means that, if the net current to the summing junction is n ...
A Second Long Pulse Modulator For TESLA Using IGBTs
... Our reasons for developing an IGBT switch were twofold. First, we wanted to develop some expertise with these newer components and to determine if they would have advantages over the GTO design. Second, the GTO switch in the new modulator would have had to turn off in excess of 2.3 kA under fault co ...
... Our reasons for developing an IGBT switch were twofold. First, we wanted to develop some expertise with these newer components and to determine if they would have advantages over the GTO design. Second, the GTO switch in the new modulator would have had to turn off in excess of 2.3 kA under fault co ...
Calibrating voltage input signal conditioners using the Fluke 787
... mA and 4-20 mA outputs are notori2 + 3.50 = 3.75, or one-half the ous for zero and span control interacdifference between the reading tion. If, when performing step 6 in and the desired value.) the calibrating section on page 2, 2. Set the source current of the your output meter displayed a value Fl ...
... mA and 4-20 mA outputs are notori2 + 3.50 = 3.75, or one-half the ous for zero and span control interacdifference between the reading tion. If, when performing step 6 in and the desired value.) the calibrating section on page 2, 2. Set the source current of the your output meter displayed a value Fl ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... liquefied natural gas plants, water plants, marine propulsion, power generation, energy transmission, and powerquality devices, FACTS Devices [1-3]. Cascaded H-bridge converter topology is prominently used and particularly useful for renewable energy and DSTATCOM applications [4-5], [9]. While in co ...
... liquefied natural gas plants, water plants, marine propulsion, power generation, energy transmission, and powerquality devices, FACTS Devices [1-3]. Cascaded H-bridge converter topology is prominently used and particularly useful for renewable energy and DSTATCOM applications [4-5], [9]. While in co ...
Lab 7
... timing applications requires choosing an operating mode and knowing how to implement it on the chosen device. When using digital and timing circuits, we often rely on a repetitive waveform to define the frequency and start times for the other logical devices. This waveform is called a “clock” and is ...
... timing applications requires choosing an operating mode and knowing how to implement it on the chosen device. When using digital and timing circuits, we often rely on a repetitive waveform to define the frequency and start times for the other logical devices. This waveform is called a “clock” and is ...
MSP430 Low Power Modes - 清華大學開放式課程
... An interrupt automatically switches MSP430 to active Current can be reduced by running at lowest supply voltage consistent with the frequency of MCLK, e.g. VCC to 1.8V for fDCO = 1MHz ...
... An interrupt automatically switches MSP430 to active Current can be reduced by running at lowest supply voltage consistent with the frequency of MCLK, e.g. VCC to 1.8V for fDCO = 1MHz ...
01 EXPERIMENT 02 SCR PHASE CONTROL Objective 1
... The PUT acts as a relaxation oscillator. When the gate voltage VG is fixed, the PUT switches on it its anode voltage is greater than VG plus VT. The anode voltage is the capacitor voltage determined by the charging current and RC timing network. The capacitor charges through R2 and VR2. When the ca ...
... The PUT acts as a relaxation oscillator. When the gate voltage VG is fixed, the PUT switches on it its anode voltage is greater than VG plus VT. The anode voltage is the capacitor voltage determined by the charging current and RC timing network. The capacitor charges through R2 and VR2. When the ca ...
Automotive Driver Requirements, Topologies and
... How does this current effect your system? Amplified waveform Turn-off current from the previous slide ...
... How does this current effect your system? Amplified waveform Turn-off current from the previous slide ...
Lecture series 11 - SmartGrid Privacy
... Use batteries to increase load during low usage periods (charge batteries) Use batteries to decrease load during peak periods (draw power from batteries) ...
... Use batteries to increase load during low usage periods (charge batteries) Use batteries to decrease load during peak periods (draw power from batteries) ...
MAX8627 Low V , 20µA IQ, 1MHz Synchronous Boost Converter with True Shutdown
... consumes only 20µA under no-load conditions. At light loads, the output ripple has a frequency component that varies with load current. The threshold for entering the low-power mode is determined by sensing the voltage drop across the internal switch and comparing it to an internally generated refer ...
... consumes only 20µA under no-load conditions. At light loads, the output ripple has a frequency component that varies with load current. The threshold for entering the low-power mode is determined by sensing the voltage drop across the internal switch and comparing it to an internally generated refer ...
Glossary of Terms - Advanced Protection Technologies
... One-port SPD - A surge protective device (SPD) having provisions (terminals, leads, plug) for connection to the ac power circuit but no provisions (terminal, leads, receptacles) for supplying current to the ac power loads (UL 1449-1998) Open-circuit voltage (OCV) - The voltage available from the tes ...
... One-port SPD - A surge protective device (SPD) having provisions (terminals, leads, plug) for connection to the ac power circuit but no provisions (terminal, leads, receptacles) for supplying current to the ac power loads (UL 1449-1998) Open-circuit voltage (OCV) - The voltage available from the tes ...
Single- and Three-Phase Power Measurements
... Start the "LabPowerMeasurements" program on the station computer. There will be a 10 second delay while the software checks the data acquisition board. Connect the single-phase circuit as shown in Figure 6. Use the four-conductor cables with black (B), red (R), white (W), and green (G) connectors as ...
... Start the "LabPowerMeasurements" program on the station computer. There will be a 10 second delay while the software checks the data acquisition board. Connect the single-phase circuit as shown in Figure 6. Use the four-conductor cables with black (B), red (R), white (W), and green (G) connectors as ...
STK5F4U3E2D-E - ON Semiconductor
... As the voltage is lower than the UVLO threshold the control circuit is not fully turned on. A perfect functionality cannot be guaranteed. ...
... As the voltage is lower than the UVLO threshold the control circuit is not fully turned on. A perfect functionality cannot be guaranteed. ...
Space Vector PWM and Model Predictive Control for Voltage Source
... and adjust the output parameters [3]. Anti-parallel diodes are connected across from the switches to add a reverse current capability [2]. VSI requires a stiff DC voltage source at input [1] for quality operation. The input source could be the output of a rectifier, battery, fuel cell, or photo volt ...
... and adjust the output parameters [3]. Anti-parallel diodes are connected across from the switches to add a reverse current capability [2]. VSI requires a stiff DC voltage source at input [1] for quality operation. The input source could be the output of a rectifier, battery, fuel cell, or photo volt ...
- CAREERFUNDA.IN
... 15. Bulk power transmission over long HVDC lines are preferred, on account of (A)low cost of HVDC terminals (B)no harmonic problems (C)minimum line power losses (D)simple protection ...
... 15. Bulk power transmission over long HVDC lines are preferred, on account of (A)low cost of HVDC terminals (B)no harmonic problems (C)minimum line power losses (D)simple protection ...
OPTICAL LINK OF THE ATLAS PIXEL DETECTOR
... sending transitions corresponding to clock leading edges only. In the absence of data bits (logic level 0), the resulting signal is a 20 MHz square wave. Data bits are encoded as an extra transition at beam-crossing clock trailing edges. The amplitude of the current from the PIN diode is expected to ...
... sending transitions corresponding to clock leading edges only. In the absence of data bits (logic level 0), the resulting signal is a 20 MHz square wave. Data bits are encoded as an extra transition at beam-crossing clock trailing edges. The amplitude of the current from the PIN diode is expected to ...
Godoy, P.A., S. Chung, T.W. Barton, D.J. Perreault, and J.L. Dawson, “A Highly Efficient 1.95-GHz, 18-W Asymmetric Multilevel Outphasing Transmitter for Wideband Applications,” 2011 International Microwave Symposium , pp. 1-4, June 2011.
... Fig. 8 shows the prototype 18-W, 1.95-GHz AMO transmitter, which uses two class-E GaN PAs and two discrete supply modulators. Digitally pre-distorted baseband data was generated by MATLAB after characterizing the AMO transmitter with a narrowband training signal. The two phase modulators were each i ...
... Fig. 8 shows the prototype 18-W, 1.95-GHz AMO transmitter, which uses two class-E GaN PAs and two discrete supply modulators. Digitally pre-distorted baseband data was generated by MATLAB after characterizing the AMO transmitter with a narrowband training signal. The two phase modulators were each i ...
PowerPoint 프레젠테이션
... stages that alternate each other as certain voltage level are reached) A Composition of two frequencies High switching frequency used to drive the inverter MOSFETs Lower frequency determined by the periods during which energy is supplied to the PT and those during which it isn’t Larger output filter ...
... stages that alternate each other as certain voltage level are reached) A Composition of two frequencies High switching frequency used to drive the inverter MOSFETs Lower frequency determined by the periods during which energy is supplied to the PT and those during which it isn’t Larger output filter ...
RCD Fuse Resistor Questionnaire
... Or just in an amount of time brief enough to prevent the PCB and adjacent components from charring? If a specific amount of time, what is the minimum blow time? Max blow time? 7. Is there a “hold-off” voltage requirement (voltage level that the part must be able to hold-off after fusing)? If yes, wh ...
... Or just in an amount of time brief enough to prevent the PCB and adjacent components from charring? If a specific amount of time, what is the minimum blow time? Max blow time? 7. Is there a “hold-off” voltage requirement (voltage level that the part must be able to hold-off after fusing)? If yes, wh ...
T2_Weber
... Power efficiency for SP at LHC and SLHC Illustration of various cases: SCT 4V, 1.5 A, R= 4.5 x=1.14; IP SLHC 2.5V, 2.4 A, R= 4.5 x=4.3; SP (only cable losses) SLHC 1.5V, 4 A, R= 4.5 x=12; SP (only cable losses) same but including SR power and LR power (extrapolated from ATLAS SCT ...
... Power efficiency for SP at LHC and SLHC Illustration of various cases: SCT 4V, 1.5 A, R= 4.5 x=1.14; IP SLHC 2.5V, 2.4 A, R= 4.5 x=4.3; SP (only cable losses) SLHC 1.5V, 4 A, R= 4.5 x=12; SP (only cable losses) same but including SR power and LR power (extrapolated from ATLAS SCT ...
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.