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... The secondary voltage of an iron-core transformer with 240 volts on the primary, 40 amps on the primary, and 20 amps on the secondary is ____________ volts. ...
... The secondary voltage of an iron-core transformer with 240 volts on the primary, 40 amps on the primary, and 20 amps on the secondary is ____________ volts. ...
Power Electronic Device Protection (VFD, Drive Protection)
... Most soft starters utilize either silicon-controlled rectifiers (SCRs) or gate turnoff thyristors (GTOs) for power conversion. These devices depend on high speed fuses for protection from both internal and external faults. If high speed fuses are properly selected, Type 2 protection may be achieved. ...
... Most soft starters utilize either silicon-controlled rectifiers (SCRs) or gate turnoff thyristors (GTOs) for power conversion. These devices depend on high speed fuses for protection from both internal and external faults. If high speed fuses are properly selected, Type 2 protection may be achieved. ...
Document
... reading vs. true voltage. Suppose you are testing an electronic circuit which has two resistors, R1 and R2, each 15 kΩ, connected in series as shown in part (a) of the figure. The battery maintains 8.0 V across them and has negligible internal resistance. A voltmeter whose sensitivity is 10,000 Ω/V ...
... reading vs. true voltage. Suppose you are testing an electronic circuit which has two resistors, R1 and R2, each 15 kΩ, connected in series as shown in part (a) of the figure. The battery maintains 8.0 V across them and has negligible internal resistance. A voltmeter whose sensitivity is 10,000 Ω/V ...
THS4211 THS4215
... The THS4211/5 may incorporate a PowerPAD™ on the underside of the chip. This acts as a heat sink and must be connected to a thermally dissipative plane for proper power dissipation. Failure to do so may result in exceeding the maximum junction temperature which could permanently damage the device. S ...
... The THS4211/5 may incorporate a PowerPAD™ on the underside of the chip. This acts as a heat sink and must be connected to a thermally dissipative plane for proper power dissipation. Failure to do so may result in exceeding the maximum junction temperature which could permanently damage the device. S ...
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... offset-voltage stability far exceeding the stability available with conventional metal-gate processes. Three offset-voltage grades are available (C-suffix and I-suffix types), ranging from the low-cost TLC27L1 (10 mV) to the TLC27L1B (2 mV) low-offset version. The extremely high input impedance and ...
... offset-voltage stability far exceeding the stability available with conventional metal-gate processes. Three offset-voltage grades are available (C-suffix and I-suffix types), ranging from the low-cost TLC27L1 (10 mV) to the TLC27L1B (2 mV) low-offset version. The extremely high input impedance and ...
Moving-iron ammeters
... The majority of ammeters are either connected in series with the circuit carrying the current to be measured (for small fractional amperes), or have their shunt resistors connected similarly in series. In either case, the current passes through the meter or (mostly) through its shunt. They must not ...
... The majority of ammeters are either connected in series with the circuit carrying the current to be measured (for small fractional amperes), or have their shunt resistors connected similarly in series. In either case, the current passes through the meter or (mostly) through its shunt. They must not ...
TSH512
... transmitter. Access pins to each section give high versatility and allow for several different applications: stereo headphone, multimedia headset, audio sub-carrier generator. The TSH512 integrates in a single chip low-noise audio preamplifiers with ALC (automatic level control), frequency-modulated ...
... transmitter. Access pins to each section give high versatility and allow for several different applications: stereo headphone, multimedia headset, audio sub-carrier generator. The TSH512 integrates in a single chip low-noise audio preamplifiers with ALC (automatic level control), frequency-modulated ...
IMPULSE ® •VG+ Series 3 Theory of Operation IMPULSE ® Drive
... tells the motor what to do, then checks to see if it did it, then changes its command to correct for any error.” ...
... tells the motor what to do, then checks to see if it did it, then changes its command to correct for any error.” ...
Volume 45, Number 1, 2011
... by a current-sensing amplifier. The inputs of the amplifier are susceptible to external high-frequency common-mode signals that could be present in the wiring. If the analog component is affected by external high-frequency interference, it may lose accuracy, and could perhaps even lose control of th ...
... by a current-sensing amplifier. The inputs of the amplifier are susceptible to external high-frequency common-mode signals that could be present in the wiring. If the analog component is affected by external high-frequency interference, it may lose accuracy, and could perhaps even lose control of th ...
LTC6362 - Linear Technology
... The LTC®6362 is a low power, low noise differential op amp with rail-to-rail input and output swing that has been optimized to drive low power SAR ADCs. The LTC6362 draws only 1mA of supply current in active operation, and features a shutdown mode in which the current consumption is reduced to 70μA. ...
... The LTC®6362 is a low power, low noise differential op amp with rail-to-rail input and output swing that has been optimized to drive low power SAR ADCs. The LTC6362 draws only 1mA of supply current in active operation, and features a shutdown mode in which the current consumption is reduced to 70μA. ...
AD590 数据手册DataSheet 下载
... measuring circuitry, and cold junction compensation are not needed in applying the AD590. ...
... measuring circuitry, and cold junction compensation are not needed in applying the AD590. ...
Chapter 6 BUILDING A HOMEBREW QRP
... collector to emitter. In the 2N3904 transistor used above, the transistor “gain” causes a big current to flow that is 100 times larger than the base current. Suppose that we want to amplify a sinewave that has both positive and negative polarities. A transistor amplifier with a minimum of parts woul ...
... collector to emitter. In the 2N3904 transistor used above, the transistor “gain” causes a big current to flow that is 100 times larger than the base current. Suppose that we want to amplify a sinewave that has both positive and negative polarities. A transistor amplifier with a minimum of parts woul ...
MAX1544 Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies General Description
... The MAX1544 is a dual-phase, Quick-PWM™, stepdown controller for AMD Hammer™ CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The QuickPWM control scheme provides instantaneous respon ...
... The MAX1544 is a dual-phase, Quick-PWM™, stepdown controller for AMD Hammer™ CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The QuickPWM control scheme provides instantaneous respon ...
ABWR 8.2 Offsite Power Systems 8.2.1 Description
... the loads. The circuits associated with the alternate offsite circuit from the reserve auxiliary transformers to the Class 1E buses are separated by walls or floors, or by at least 15.24m, from the main and unit auxiliary transformers. The circuits associated with the normal preferred offsite circui ...
... the loads. The circuits associated with the alternate offsite circuit from the reserve auxiliary transformers to the Class 1E buses are separated by walls or floors, or by at least 15.24m, from the main and unit auxiliary transformers. The circuits associated with the normal preferred offsite circui ...
Power electronics
Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)