Issues to Consider when Substituting Large Power Transformers in
... IEEE C57.116 [9] recommends selecting the main parameters of UT (rated voltages, rated MVA, impedance, and over-excitation) by portraying graphically their effect under various operation conditions. While this method is mainly dedicated to a new plant project, it may be also used in case of a substi ...
... IEEE C57.116 [9] recommends selecting the main parameters of UT (rated voltages, rated MVA, impedance, and over-excitation) by portraying graphically their effect under various operation conditions. While this method is mainly dedicated to a new plant project, it may be also used in case of a substi ...
723PLUS Digital Control Nile River Vessel Generator Control
... Use of this equipment by untrained or unqualified personnel could result in damage to the control or the installation's equipment and possible loss of life or personal injury. Make sure personnel using or working on this equipment are correctly trained. This manual covers only equipment which is man ...
... Use of this equipment by untrained or unqualified personnel could result in damage to the control or the installation's equipment and possible loss of life or personal injury. Make sure personnel using or working on this equipment are correctly trained. This manual covers only equipment which is man ...
MOTM-190 User Manual - Synthesis Technology
... solder to make a small puddle that looks like a tiny pyramid. Enough solder should flow in the hole such that on the top (component) side, a small amount is on the top pad as well. A SMALL AMOUNT, not a blob! The rule of soldering: don’t use too much, you can always add more! Cut the leads flush wit ...
... solder to make a small puddle that looks like a tiny pyramid. Enough solder should flow in the hole such that on the top (component) side, a small amount is on the top pad as well. A SMALL AMOUNT, not a blob! The rule of soldering: don’t use too much, you can always add more! Cut the leads flush wit ...
laboratory manual
... save you a great deal of time and effort and are definitely worth learning about if you use it a lot. However, you are free to use any word processing application that you are happy with. If you are familiar with LATEX programme for writing documents you may use this instead of Microsoft Word. You w ...
... save you a great deal of time and effort and are definitely worth learning about if you use it a lot. However, you are free to use any word processing application that you are happy with. If you are familiar with LATEX programme for writing documents you may use this instead of Microsoft Word. You w ...
SEL-735 Power Quality and Revenue Meter
... Step 3: If necessary, repeat steps 1 and 2 to add an additional KY output. ...
... Step 3: If necessary, repeat steps 1 and 2 to add an additional KY output. ...
Practical Simulation and Modelling of Lightning Impulse Voltage
... The gap spacing is selected in a way such that the breakdown voltage across the gap G should be greater than the charging voltage V. By this setup all the capacitors are connected in series and ...
... The gap spacing is selected in a way such that the breakdown voltage across the gap G should be greater than the charging voltage V. By this setup all the capacitors are connected in series and ...
AD9221/AD9223/AD9220 Complete 12
... amplifier (SHA) is equally suited for both multiplexed systems that switch full-scale voltage levels in successive channels as well as sampling single-channel inputs at frequencies up to and beyond the Nyquist rate. Also, the AD9221/AD9223/AD9220 is well suited for communication systems employing Di ...
... amplifier (SHA) is equally suited for both multiplexed systems that switch full-scale voltage levels in successive channels as well as sampling single-channel inputs at frequencies up to and beyond the Nyquist rate. Also, the AD9221/AD9223/AD9220 is well suited for communication systems employing Di ...
Transient Voltage Suppressors
... reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or c ...
... reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or c ...
The DatasheetArchive - Datasheet Search Engine
... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor doe ...
... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor doe ...
Technical Overview - home.hs
... operation in the presence of transients and also allows high to low voltage translation via series input resistors. The typical value of ∝ for QMOS ICs is 0.001. Figure 13 illustrates how control of ∝ in QMOS devices provides for safe conversion of 12V control logic levels to 5V HC system logic simp ...
... operation in the presence of transients and also allows high to low voltage translation via series input resistors. The typical value of ∝ for QMOS ICs is 0.001. Figure 13 illustrates how control of ∝ in QMOS devices provides for safe conversion of 12V control logic levels to 5V HC system logic simp ...
R-EF-11: Stray Voltage Problems with Dairy Cows
... tional disorders, mastitis control methods, sanitation, and disease. A careful analysis of all possible causes is necessary if proper cor rective procedures are to be found. ...
... tional disorders, mastitis control methods, sanitation, and disease. A careful analysis of all possible causes is necessary if proper cor rective procedures are to be found. ...
MAX3223-EP 数据资料 dataSheet 下载
... auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF is set low and EN is high, both drivers and receivers are shut off, and the supply current is red ...
... auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF is set low and EN is high, both drivers and receivers are shut off, and the supply current is red ...
8.3 Onsite Power System 8.3.1 Alternating Current Power Systems
... during normal bus alignments. An alternate feed is provided between EPSS divisions 1 and 2 (first divisional pair) to provide the normal and standby source of power to required safety-related systems, safety-related support systems, or components that do not have the required redundancy when certain ...
... during normal bus alignments. An alternate feed is provided between EPSS divisions 1 and 2 (first divisional pair) to provide the normal and standby source of power to required safety-related systems, safety-related support systems, or components that do not have the required redundancy when certain ...
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... Figure 2. Output voltage (VOH) vs. output current (IOH) A Dynamic Controlled Output (DCO) circuit is designed in. During the transition, it initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figures 1 and 2 show VOL vs. IOL an ...
... Figure 2. Output voltage (VOH) vs. output current (IOH) A Dynamic Controlled Output (DCO) circuit is designed in. During the transition, it initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figures 1 and 2 show VOL vs. IOL an ...
HARDWARE MANUAL
... Radiated electromagnetic field, Fast transient burst, Electrostatic discharge, High-energy surge, Voltage drops and interruptions, Conducted RF and Power frequency magnetic field) ...
... Radiated electromagnetic field, Fast transient burst, Electrostatic discharge, High-energy surge, Voltage drops and interruptions, Conducted RF and Power frequency magnetic field) ...
Stiletto - MESA/Boogie
... of the note is transformed into an instantaneous symphony as it is morphing from an absolute bold event in time - to a spinning wheel of vowel sounds as the envelope changes during decay in response to the rise and fall of input voltage generated by your picking technique. All this preamp tone and fl ...
... of the note is transformed into an instantaneous symphony as it is morphing from an absolute bold event in time - to a spinning wheel of vowel sounds as the envelope changes during decay in response to the rise and fall of input voltage generated by your picking technique. All this preamp tone and fl ...
XMC4000 - Fail-Safe Features
... During power-up VDDP voltage still too low to ensure proper function of modules supplied with VDDP, which may potentially lead to for example to Flash malfunction, I/O pads misbehavior, or unreliable VDDC generation in EVR. ...
... During power-up VDDP voltage still too low to ensure proper function of modules supplied with VDDP, which may potentially lead to for example to Flash malfunction, I/O pads misbehavior, or unreliable VDDC generation in EVR. ...
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.