1em-dcmachinesstructureworkingtypes
... A commutator consists of a set of copper segments which are insulated from each other. The number of segments is equal to the number of armature coils. Each segment is connected to an armature coil . Commutator is keyed to the shaft. ...
... A commutator consists of a set of copper segments which are insulated from each other. The number of segments is equal to the number of armature coils. Each segment is connected to an armature coil . Commutator is keyed to the shaft. ...
ALP20 and ALT20/21 Series, +85°C
... Apply the rated voltage to the capacitor at room temperature for a period of one hour, or until the leakage current has fallen to a steady value below the specified limit. During re-aging a maximum charging current of twice the specified leakage current or 5 mA (whichever is greater) is suggested. ...
... Apply the rated voltage to the capacitor at room temperature for a period of one hour, or until the leakage current has fallen to a steady value below the specified limit. During re-aging a maximum charging current of twice the specified leakage current or 5 mA (whichever is greater) is suggested. ...
MAX5911/MAX5912 -48V Simple Swapper Hot-Swap Switches General Description Features
... the safe insertion and removal of circuit cards into live backplanes or ports without causing problematic glitches on the negative power-supply rail. They also monitor various circuit parameters and disconnect the load if a fault condition occurs, alerting the host with a logic-level FAULT output. T ...
... the safe insertion and removal of circuit cards into live backplanes or ports without causing problematic glitches on the negative power-supply rail. They also monitor various circuit parameters and disconnect the load if a fault condition occurs, alerting the host with a logic-level FAULT output. T ...
Shunt capacitor banks increase capacity of distribution networks
... Internally fused capacitor units are made up of individual capacitor elements connected in appropriate series and parallel combinations to achieve the required voltage and reactive power output rating, and these elements each have individual fuses connected in series with them (Fig. 5). These fuses ...
... Internally fused capacitor units are made up of individual capacitor elements connected in appropriate series and parallel combinations to achieve the required voltage and reactive power output rating, and these elements each have individual fuses connected in series with them (Fig. 5). These fuses ...
PDF: 1.54MB
... (2) Temperature protection function of both DIP Ver.5 and DIP Ver.6 is selectable from two functions. (They have different model numbers.) One is conventional over temperature protection (OT), and the other is LVIC temperature output function (VOT). OT function shutdowns all N-side IGBTs automatical ...
... (2) Temperature protection function of both DIP Ver.5 and DIP Ver.6 is selectable from two functions. (They have different model numbers.) One is conventional over temperature protection (OT), and the other is LVIC temperature output function (VOT). OT function shutdowns all N-side IGBTs automatical ...
ZXTNS618MC
... 10. For a dual device surface mounted on 28mm x 28mm (8cm2) FR4 PCB with high coverage of single sided 2 oz copper, in still air conditions; the device is measured when operating in a steady-state condition. The heatsink is split in half with the exposed cathode and collector pads connected to each ...
... 10. For a dual device surface mounted on 28mm x 28mm (8cm2) FR4 PCB with high coverage of single sided 2 oz copper, in still air conditions; the device is measured when operating in a steady-state condition. The heatsink is split in half with the exposed cathode and collector pads connected to each ...
AN-9005 - Fairchild Semiconductor
... parasitic oscillation frequencies are in the range of several tens to hundreds of megahertz. The parasitic oscillation can cause gate-source breakdown, bad EMI, large switching losses, losing gate control, and can even lead to MOSFET failures. A ferrite bead is often used on MOSFET gate leads to pro ...
... parasitic oscillation frequencies are in the range of several tens to hundreds of megahertz. The parasitic oscillation can cause gate-source breakdown, bad EMI, large switching losses, losing gate control, and can even lead to MOSFET failures. A ferrite bead is often used on MOSFET gate leads to pro ...
Waves - The Student Room
... How does it work? Ultrasonic waves are partly _________ at the boundary as they pass from one _______ to another. The time taken for these reflections can be used to measure the _______ of the reflecting surface and this information is used to build up a __________ of the object. ...
... How does it work? Ultrasonic waves are partly _________ at the boundary as they pass from one _______ to another. The time taken for these reflections can be used to measure the _______ of the reflecting surface and this information is used to build up a __________ of the object. ...
PARALLEL UNIT-CONNECTED GENERATOR MODEL FOR THIRD
... 4.1 Validation of the Non-Fault Model In order to verify that the circuit models presented to sudy the phenomenon of interest are built correctly using SIMULINK, validation of the non-fault model is done by a comparison of results obtained from theoretical analysis and computer simulation of the mod ...
... 4.1 Validation of the Non-Fault Model In order to verify that the circuit models presented to sudy the phenomenon of interest are built correctly using SIMULINK, validation of the non-fault model is done by a comparison of results obtained from theoretical analysis and computer simulation of the mod ...
Single Pole IR
... How much short-circuit current will flow in a ground fault condition? The answer is dependent upon the location of the fault with respect to the transformer secondary. Referring to Figures 3 and 4, the ground fault current flows through one coil of the wye transformer secondary and through the phase ...
... How much short-circuit current will flow in a ground fault condition? The answer is dependent upon the location of the fault with respect to the transformer secondary. Referring to Figures 3 and 4, the ground fault current flows through one coil of the wye transformer secondary and through the phase ...
lecture1423723226
... The sign on a voltage of mutual inductance can be determined if the winding sense is shown on the circuit diagram, as in Fig. To simplify the problem of obtaining the correct sign, the coils are marked with dots at the terminals which are instantaneously of the same polarity. To assign the dots to a ...
... The sign on a voltage of mutual inductance can be determined if the winding sense is shown on the circuit diagram, as in Fig. To simplify the problem of obtaining the correct sign, the coils are marked with dots at the terminals which are instantaneously of the same polarity. To assign the dots to a ...
Subthreshold Logical Effort: A Systematic Framework for Optimal
... Due to the robust nature of static CMOS logic, circuits in this technology family can operate with supply voltages below the transistor threshold voltage (Vth), while consuming orders of magnitude less power than in the normal strong-inversion region. The operating frequency of subthreshold logic is ...
... Due to the robust nature of static CMOS logic, circuits in this technology family can operate with supply voltages below the transistor threshold voltage (Vth), while consuming orders of magnitude less power than in the normal strong-inversion region. The operating frequency of subthreshold logic is ...
LTC3406/LTC3406-1.5/LTC3406-1.8
... OPERATIO (Refer to Functional Diagram) When the output is shorted to ground, the frequency of the oscillator is reduced to about 210kHz, 1/7 the nominal frequency. This frequency foldback ensures that the inductor current has more time to decay, thereby preventing runaway. The oscillator’s frequency ...
... OPERATIO (Refer to Functional Diagram) When the output is shorted to ground, the frequency of the oscillator is reduced to about 210kHz, 1/7 the nominal frequency. This frequency foldback ensures that the inductor current has more time to decay, thereby preventing runaway. The oscillator’s frequency ...
X WRITE REGULATED POWER SUPLY
... cated in FIGURE 1. The transistors are selectively actu ated by means of negative pulses applied to their bases. The transistors 38, 40, 42 and 44 are selectively actuated to write information into the memory, and the transistors 39, di, d3 and 45 are operated to read information stored therein. The ...
... cated in FIGURE 1. The transistors are selectively actu ated by means of negative pulses applied to their bases. The transistors 38, 40, 42 and 44 are selectively actuated to write information into the memory, and the transistors 39, di, d3 and 45 are operated to read information stored therein. The ...
Self-adjusting Quasi-static Electric
... Abstract—The US Army Research Laboratory (ARL) “Smart D-dot” sensor is a flat unattended ground sensor (UGS) that measures quasi-static ambient electric fields. The frontend transducer is composed of two conducting sheets/plates. The 31.6x31.6 cm top plate acts as the signal collector and current so ...
... Abstract—The US Army Research Laboratory (ARL) “Smart D-dot” sensor is a flat unattended ground sensor (UGS) that measures quasi-static ambient electric fields. The frontend transducer is composed of two conducting sheets/plates. The 31.6x31.6 cm top plate acts as the signal collector and current so ...
AAT3608 数据资料DataSheet下载
... package, making it ideal for portable space-constrained systems. The single-input linear charger powers up from an adapter or a USB port. The adapter charge current is programmable with an external resistor or pin selectable between 100mA and 500mA when connected to a USB port. The device integrates ...
... package, making it ideal for portable space-constrained systems. The single-input linear charger powers up from an adapter or a USB port. The adapter charge current is programmable with an external resistor or pin selectable between 100mA and 500mA when connected to a USB port. The device integrates ...
PDF: 1.73MB
... favorable for larger mass production. Power chips, drive and protection circuits are integrated in the module, which make it easy for AC100-240V class low power motor inverter control. This series is developed as a succession model of current Mini DIPIPM Ver.3 (5~20A/600V) and Ver.4 series (20,30A/6 ...
... favorable for larger mass production. Power chips, drive and protection circuits are integrated in the module, which make it easy for AC100-240V class low power motor inverter control. This series is developed as a succession model of current Mini DIPIPM Ver.3 (5~20A/600V) and Ver.4 series (20,30A/6 ...
LTC3406/LTC3406-1.5/LTC3406-1.8
... OPERATIO (Refer to Functional Diagram) When the output is shorted to ground, the frequency of the oscillator is reduced to about 210kHz, 1/7 the nominal frequency. This frequency foldback ensures that the inductor current has more time to decay, thereby preventing runaway. The oscillator’s frequency ...
... OPERATIO (Refer to Functional Diagram) When the output is shorted to ground, the frequency of the oscillator is reduced to about 210kHz, 1/7 the nominal frequency. This frequency foldback ensures that the inductor current has more time to decay, thereby preventing runaway. The oscillator’s frequency ...
PDF Version
... in Figure 8 was used. An advantage of this device was the sensitivity for harmonics because it trips on the mean value of the products of voltage and current. A torque was produced A definite time reverse power relay, type WCG, produced only in case of equal fundamental or harmonic. by GEC in 1988 i ...
... in Figure 8 was used. An advantage of this device was the sensitivity for harmonics because it trips on the mean value of the products of voltage and current. A torque was produced A definite time reverse power relay, type WCG, produced only in case of equal fundamental or harmonic. by GEC in 1988 i ...
Magnetics Design 4 - Power Transformer Design
... dimensional limits for creepage and insulation thickness which can waste a high percentage of window area, especially in a small transformer. A bobbin also reduces the area available for windings. Triple insulated wire satisfies the insulation thickness requirement and eliminates the creepage requir ...
... dimensional limits for creepage and insulation thickness which can waste a high percentage of window area, especially in a small transformer. A bobbin also reduces the area available for windings. Triple insulated wire satisfies the insulation thickness requirement and eliminates the creepage requir ...
Current source
A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.