Protective Relay Application Guide
... When transformer feeder protection is being considered it is advisable to use relays having an instantaneous high-set unit. This is set above the secondary short-circuit level and transformer in-rush current, which then allows the operating time of upstream relays to be reduced thereby reducing the ...
... When transformer feeder protection is being considered it is advisable to use relays having an instantaneous high-set unit. This is set above the secondary short-circuit level and transformer in-rush current, which then allows the operating time of upstream relays to be reduced thereby reducing the ...
50 MHz to 2200 MHz Quadrature Modulator ADL5385
... designed for use from 50 MHz to 2200 MHz. Its excellent phase accuracy and amplitude balance enable both high performance intermediate frequency (IF) and direct radio frequency (RF) modulation for communication systems. The AD5385 takes the signals from two differential baseband inputs and modulates ...
... designed for use from 50 MHz to 2200 MHz. Its excellent phase accuracy and amplitude balance enable both high performance intermediate frequency (IF) and direct radio frequency (RF) modulation for communication systems. The AD5385 takes the signals from two differential baseband inputs and modulates ...
a study of why electrostatic actuation is preferred and a simulation of
... different coefficient of thermal expansion are fabricated together. Due to this gradient in coefficient of thermal expansion, upon application of heat energy the strip will deflect. The main advantage of electrothermal actuation is the simplicity of the fabrication method. However, in general, therm ...
... different coefficient of thermal expansion are fabricated together. Due to this gradient in coefficient of thermal expansion, upon application of heat energy the strip will deflect. The main advantage of electrothermal actuation is the simplicity of the fabrication method. However, in general, therm ...
LPC Cortex-M microcontrollers
... Application example: Digital power LPC1500 Series MCUs provides precise control of voltage and current using on-chip PWMs/ ADCs. Fault detection features shut down the system quickly when short circuit or overcurrent conditions are detected. ...
... Application example: Digital power LPC1500 Series MCUs provides precise control of voltage and current using on-chip PWMs/ ADCs. Fault detection features shut down the system quickly when short circuit or overcurrent conditions are detected. ...
Operator Manual - Air
... EMC INTRODUCTION Hypertherm's CE-marked equipment is built in compliance with standard EN50199. The equipment should be installed and used in accordance with the information below to achieve electromagnetic compatibility. The limits required by EN50199 may not be adequate to completely eliminate int ...
... EMC INTRODUCTION Hypertherm's CE-marked equipment is built in compliance with standard EN50199. The equipment should be installed and used in accordance with the information below to achieve electromagnetic compatibility. The limits required by EN50199 may not be adequate to completely eliminate int ...
Burst Mode Switch Mode Power Supply (SMPS) for 320W (peak) Class D
... Also, I believe class D amplifier SMPS’s are mainly tested on 1/8th power, so the problem gets much smaller…..and especially so if you have used the “adjusted burst mode” method described elsewhere in this report. Another point is that the Burst Mode SMPS suggested here does not contain a PFC stage, ...
... Also, I believe class D amplifier SMPS’s are mainly tested on 1/8th power, so the problem gets much smaller…..and especially so if you have used the “adjusted burst mode” method described elsewhere in this report. Another point is that the Burst Mode SMPS suggested here does not contain a PFC stage, ...
doctor - Shodhganga
... capacitance and a nonlinear inductance. The capacitance can be due to a large number of capacitive elements. Similarly the nonlinear inductance can be that of a single element for example the magnetic core of a voltage transformer or it may have the structure of a three phase power transformer [69]. ...
... capacitance and a nonlinear inductance. The capacitance can be due to a large number of capacitive elements. Similarly the nonlinear inductance can be that of a single element for example the magnetic core of a voltage transformer or it may have the structure of a three phase power transformer [69]. ...
The Christmas
... Transistors used in linear-mode applications Heat dissipation Transistors used in switch-mode applications Emitter focusing ...
... Transistors used in linear-mode applications Heat dissipation Transistors used in switch-mode applications Emitter focusing ...
Open drain microprocessor reset
... STM6315 will NOT generate a reset pulse). The graph was generated using a negative pulse applied to VCC, starting at 0.5V above the actual reset threshold and ending below it by the magnitude indicated (Reset Threshold Overdrive). The graph indicates the maximum pulse width a negative VCC transient ...
... STM6315 will NOT generate a reset pulse). The graph was generated using a negative pulse applied to VCC, starting at 0.5V above the actual reset threshold and ending below it by the magnitude indicated (Reset Threshold Overdrive). The graph indicates the maximum pulse width a negative VCC transient ...
Application Note No. 065 Schottky Diodes for Clipping, Clamping and
... A concern in many electronic systems is the presence of impulses of noise or “voltage spikes” on data or signal lines. These undesired transient signals can originate from within or outside of a given system, and if severe enough, can cause permanent damage to system components such as microprocesso ...
... A concern in many electronic systems is the presence of impulses of noise or “voltage spikes” on data or signal lines. These undesired transient signals can originate from within or outside of a given system, and if severe enough, can cause permanent damage to system components such as microprocesso ...
Rebuilt and Modified Altec 1567A: A Technical
... working one and a single working #44 lamp (half the number required). Lamp type is not specified in the schematic or manual, so I used two #47s, which run cooler than #44s. The unit had four model 4722 input transformers and one model 15095 output transformer. The shield can on three of them seemed ...
... working one and a single working #44 lamp (half the number required). Lamp type is not specified in the schematic or manual, so I used two #47s, which run cooler than #44s. The unit had four model 4722 input transformers and one model 15095 output transformer. The shield can on three of them seemed ...
TLV431 Description Pin Assignments
... Figure 3. High Current Shunt Regulator It may at times be required to shunt-regulate more current than the 15mA that the TLV431 is capable of. Figure 3 shows how this can be done using transistor Q1 to amplify the TLV431’s current. Care needs to be taken that the power dissipation and/or SOA require ...
... Figure 3. High Current Shunt Regulator It may at times be required to shunt-regulate more current than the 15mA that the TLV431 is capable of. Figure 3 shows how this can be done using transistor Q1 to amplify the TLV431’s current. Care needs to be taken that the power dissipation and/or SOA require ...
new triacs: is the snubber circuit necessary?
... improvement of the triac immunity against transients in the off state ; compensation of latching current at turn on (not dealt in this paper). Switching on and voltage perturbations can provoke overvoltages and fast voltage variations across the triac : this one could break over when the overvoltage ...
... improvement of the triac immunity against transients in the off state ; compensation of latching current at turn on (not dealt in this paper). Switching on and voltage perturbations can provoke overvoltages and fast voltage variations across the triac : this one could break over when the overvoltage ...
S280-104-1
... power factor on a per-phase basis, and power (real, reactive, apparent) on a per phase or total basis. Symmetrical components for both voltage and current are displayed along with kilowatt-hours for energy metering. Harmonics from the 2nd to the 15th harmonic are also included. The front panel LCD d ...
... power factor on a per-phase basis, and power (real, reactive, apparent) on a per phase or total basis. Symmetrical components for both voltage and current are displayed along with kilowatt-hours for energy metering. Harmonics from the 2nd to the 15th harmonic are also included. The front panel LCD d ...
Medium Voltage Motor Insulation System
... because of the superior dielectric properties. Based on the voltage of the motor the appropriate number of layers is applied. Taping machines are used to optimize the quality of half-lap layering. This tape also contains an epoxy catalyst that coagulates the resin during the VPI process to eliminate ...
... because of the superior dielectric properties. Based on the voltage of the motor the appropriate number of layers is applied. Taping machines are used to optimize the quality of half-lap layering. This tape also contains an epoxy catalyst that coagulates the resin during the VPI process to eliminate ...
Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX... ADC12030, ADC12038 ADC12H034,
... Chip Select input pin. When a logic low is applied to this pin, the rising edge of SCLK shifts the data on DI into the address register. This low also brings DO out of TRI-STATE. With CS low the falling edge of SCLK shifts the data resulting from the previous ADC conversion out at the DO output, wit ...
... Chip Select input pin. When a logic low is applied to this pin, the rising edge of SCLK shifts the data on DI into the address register. This low also brings DO out of TRI-STATE. With CS low the falling edge of SCLK shifts the data resulting from the previous ADC conversion out at the DO output, wit ...
p-Channel JFET
... As VGS becomes more negative: • the JFET will pinch-off at a lower voltage (Vp). • ID decreases (ID < IDSS) even though VDS is increased. • Eventually ID will reach 0A. VGS at this point is called Vp or VGS(off). • Also note that at high levels of VDS the JFET reaches a breakdown situation. ID will ...
... As VGS becomes more negative: • the JFET will pinch-off at a lower voltage (Vp). • ID decreases (ID < IDSS) even though VDS is increased. • Eventually ID will reach 0A. VGS at this point is called Vp or VGS(off). • Also note that at high levels of VDS the JFET reaches a breakdown situation. ID will ...
R-series - Dynamic Controls
... The term ‘programming’ used in this manual refers to adjusting parameters and configuring options to suit an application. ‘Programming’ does not change or alter any software within the controller and is performed using a controlled programming tool available only to authorised personnel. The product ...
... The term ‘programming’ used in this manual refers to adjusting parameters and configuring options to suit an application. ‘Programming’ does not change or alter any software within the controller and is performed using a controlled programming tool available only to authorised personnel. The product ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.