Earthing Transformer
... The neutral of a system may be grounded through a resistance, reactance or directly. Generally, the neutrals of source transformers or generators with star connected windings are grounded. Grounding the neutral reduces the magnitude of transient voltages, improves protection against lightning, prote ...
... The neutral of a system may be grounded through a resistance, reactance or directly. Generally, the neutrals of source transformers or generators with star connected windings are grounded. Grounding the neutral reduces the magnitude of transient voltages, improves protection against lightning, prote ...
student`s book - Macmillan Education South Africa
... • Explain the frequency selectivity characteristic of RC series circuits (low- and high-pass circuits). • Explain the effects of faulty components in RC circuits. ...
... • Explain the frequency selectivity characteristic of RC series circuits (low- and high-pass circuits). • Explain the effects of faulty components in RC circuits. ...
execution of at89s52 microcontroller based single
... In the capacitor –start-and –run IM the starting winding and capacitor are permanently connected in the circuit. These motors are also known as permanent-spilt capacitor motors. It has a comparatively low starting torque which is about 50 to 100 percent of the rated torque. The two-value capacitors ...
... In the capacitor –start-and –run IM the starting winding and capacitor are permanently connected in the circuit. These motors are also known as permanent-spilt capacitor motors. It has a comparatively low starting torque which is about 50 to 100 percent of the rated torque. The two-value capacitors ...
What are the 555 timer applications?
... The 555 timer is one of the most remarkable integrated circuits ever developed. It comes in a single or dual package and even low power cmos versions exist - ICM7555. Common part numbers are LM555, NE555, LM556, NE556. The 555 timer consists of two voltage comparators, a bi-stable flip flop, a disch ...
... The 555 timer is one of the most remarkable integrated circuits ever developed. It comes in a single or dual package and even low power cmos versions exist - ICM7555. Common part numbers are LM555, NE555, LM556, NE556. The 555 timer consists of two voltage comparators, a bi-stable flip flop, a disch ...
SFP Series EOLS-BI1603-29X 34X 36X Series
... 4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use ...
... 4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use ...
TSS521 Meter-Bus Transceiver
... Figure 4. Single Mode Bus Load At a bus fault the shut down time of VDD (toff) in which data storage can be performed depends on the system current IVDD and the value of capacitor CSTC. See Figure 5, which shows a correlation between the shutdown of the bus voltage VBUS and VDD_off and toff for dime ...
... Figure 4. Single Mode Bus Load At a bus fault the shut down time of VDD (toff) in which data storage can be performed depends on the system current IVDD and the value of capacitor CSTC. See Figure 5, which shows a correlation between the shutdown of the bus voltage VBUS and VDD_off and toff for dime ...
High-Frequency Voltage-to-Frequency Converter
... Using the Enable input, several VFCs’ outputs can be connected to a single output line. All disabled VFCs will have a high output impedance; one active VFC can then transmit on the output line. Since the disabled VFCs are not oscillating, they cannot interfere or lock with the operating VFC. Locking ...
... Using the Enable input, several VFCs’ outputs can be connected to a single output line. All disabled VFCs will have a high output impedance; one active VFC can then transmit on the output line. Since the disabled VFCs are not oscillating, they cannot interfere or lock with the operating VFC. Locking ...
When the output voltage increases
... Diode Ratings with Capacitor Filter The size of the capacitor increases the current drawn through the diodes— the larger the capacitance, the greater the amount of current. Peak Current vs. Capacitance: ...
... Diode Ratings with Capacitor Filter The size of the capacitor increases the current drawn through the diodes— the larger the capacitance, the greater the amount of current. Peak Current vs. Capacitance: ...
amrita sai institute of science and technology
... alternator. In a d.c. generator, the armature winding is placed on the rotor and field poles are placed on the stationary part of the machine. But no commutator is required in alternator, it is usually more convenient to place the field winding on the rotating part and armature winding on the statio ...
... alternator. In a d.c. generator, the armature winding is placed on the rotor and field poles are placed on the stationary part of the machine. But no commutator is required in alternator, it is usually more convenient to place the field winding on the rotating part and armature winding on the statio ...
What do resistors do?
... (IF ) which is due to leakage. As VF continues to increase, IF remains very low and almost constant but eventually a point is reached where IF increases rapidly and VF drops to a low value. – The VF value required to trigger this sudden change is referred to as the Forward Breakover Voltage (Vp). Wh ...
... (IF ) which is due to leakage. As VF continues to increase, IF remains very low and almost constant but eventually a point is reached where IF increases rapidly and VF drops to a low value. – The VF value required to trigger this sudden change is referred to as the Forward Breakover Voltage (Vp). Wh ...
Lab 8: Frequency Response and Passive Filters
... Fig. 5 shows the Bode plot of the magnitude and phase of the low-pass filter of Fig. 1. At low frequencies, the value of HdB is close to 0 dB and it is represented by a straight line with zero gradient. At the cut off frequency HdB drops to 3 dB, and at frequencies much larger than the cutoff freq ...
... Fig. 5 shows the Bode plot of the magnitude and phase of the low-pass filter of Fig. 1. At low frequencies, the value of HdB is close to 0 dB and it is represented by a straight line with zero gradient. At the cut off frequency HdB drops to 3 dB, and at frequencies much larger than the cutoff freq ...
FAN6751MR Highly-Integrated Green-Mode PWM Controller FA N
... linearly decrease the switching frequency at light-load conditions. To avoid acoustic-noise problems, the minimum PWM frequency is set above 18KHz. This green-mode function enables the power supply to meet international power conservation requirements. With the internal high-voltage startup circuitr ...
... linearly decrease the switching frequency at light-load conditions. To avoid acoustic-noise problems, the minimum PWM frequency is set above 18KHz. This green-mode function enables the power supply to meet international power conservation requirements. With the internal high-voltage startup circuitr ...
Universal input voltage power supply for ESBT based breaker and
... some instability if the filter capacitance is too small. The reason for this is as follows: energy transferred from the primary to the secondary side is small if the output pulse is prematurely terminated during the switching cycle. If this happens for several pulses, the feedback loop increases the ...
... some instability if the filter capacitance is too small. The reason for this is as follows: energy transferred from the primary to the secondary side is small if the output pulse is prematurely terminated during the switching cycle. If this happens for several pulses, the feedback loop increases the ...
Capacitive Sensing for MEMS Motion Tracking
... Bradley Bio MEMS Project Main purpose is to analyze plant samples for medical applications Chip can be targeted with a specific receptor, such that a plant bonding with the chip alerts us of possible biomedical applications of that plant ...
... Bradley Bio MEMS Project Main purpose is to analyze plant samples for medical applications Chip can be targeted with a specific receptor, such that a plant bonding with the chip alerts us of possible biomedical applications of that plant ...
Blackstart of An Induction Motor in An Autonomous Microgrid
... A. V/F Plant Model Vector control methodology is used to control voltage and frequency of VSC [7]–[9]. A schematic controller design of VSC at an autonomous microgrid is shown in Fig. 1. The concept of vector control depends on transferring symmetrical signals from three-phase time domain into two-p ...
... A. V/F Plant Model Vector control methodology is used to control voltage and frequency of VSC [7]–[9]. A schematic controller design of VSC at an autonomous microgrid is shown in Fig. 1. The concept of vector control depends on transferring symmetrical signals from three-phase time domain into two-p ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""