Results 1 - 15 of about 1407 sawaal for "voltage"
well, Zener diode is used as a voltage regulatory device because the voltage across the zener diode in reverse bias is constant after reaching certain value i.e. breakdown voltage. Normal diodes distorts at htis breakdown voltage but the zener still runs after this voltage and keeps the voltageacross the diode constant even the supply voltage increses....zener diod is used as a voltage regulator
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Computers & Technology by Nawraj at 11:25 PM on June 27, 2008
at less than 20 watts can be said to be electronic and devices above 20 watts are electrical devices.A further classification of such devices is on the basis of operating voltage i.e devices with low operating voltages are electronic and those with high operating voltages are electrical.a device that accomplishes its purpose electronicallyanswering machine - an electronic device that answers the telephone
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Computers & Technology by ajeet at 5:48 AM on June 21, 2008
.pMOS: positively doped silicon, rich in holes the DUAL of electrons.For electrical reasons, it turns out that pMOS transistors are great at transmitting a logic 1 voltage without signal loss, but the same cannot be said about logic 0 voltages. Having 0 V at one side of a conducting pMOS transistor yields a voltage at the other side somewhat higher than 0 V. NMOS transistors have a -complementary problem
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Computers & Technology by Nawraj at 11:29 PM on June 27, 2008
.Unlike an Ethernet hub, a MAU consists of physical or electronic relays which keep each station in a loopback state until a voltage is sent from the station to the MAU. Since this voltage does not affect data communications, it is referred to as a phantomvoltage. Once this phantom voltage is received by the MAU, a relay is activated that inserts the token ring station onto the ring.MAUs are connected together with Ring
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Computers & Technology by Mohd Farooq at 3:59 PM on June 25, 2008
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This consists of increasing the CPU frequency multiplier and then adjusting its power voltage. This way, the pulses of the clock will be a little stronger and there is no possibility of losing them operating. Another output terminal 14 of the power supply 10 is connected to a UGATE pin and a PHASE pin of the PWM controller 30. The output terminal 14 transmits a voltage V1 to the PWM controller 30
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Computers & Technology by yikes bikers at 4:30 AM on May 07, 2008
well, Switching off time of a bipolar transistor is improved. When the bipolar transistor is driven to a saturation condition, the collector voltage does not go up rapidly when it is switched off again, because once the collector voltage is much less than the base voltage, reverse injection occurs, so the collector voltage can not follow the base voltage until the reverse injected electrons
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Computers & Technology by Nawraj at 9:24 PM on June 26, 2008
into regulated DC voltages required for electronic equipment.Depending on the mode of operation of power semiconductors PSU can be linear or switching SMPS. What is SMPS? SMPS stands for switch mode power supply and capacitors. By varying duty cycle, frequency or a relative phase of these transitions average value of output voltage or current is controlled . The frequency range of an SMPS is from 20 kHz to several MHz
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Computers & Technology by sahil khan at 9:26 PM on May 05, 2008
of dielectric loss angle for high voltage insulation apparatus can eliminate the effect of harmonics of testing voltage, reduce leakage resistance and capacitance and ease high resolution. Moreover, determination of the reference voltages for orthogonal decomposition and the dynamical characteristics of the bridge are presented....Well active AC is used for the measurement of dielectric loss of a capacitor....well, An active
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Computers & Technology by Nawraj at 8:24 AM on June 26, 2008
Threshold voltage is determined by the amount of charge in the depletion region. How? Consider an NMOS device. Lets say the source and substrate are grounded and hence have no potential difference because it is depleted. So the gate voltage must first equal this negative charge before it can start attracting electrons from the source/drain to form the channel.For more visit :http
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Computers & Technology by Nawraj at 8:53 PM on June 26, 2008
continuous to flow after the zero transition of the AC voltage until the inductance has been completely discharged.The time profile of the DC voltage is made up of positive and negative instantaneous values. On account of the resistive load, the positive voltage/timesection is larger than the corresponding negative section. The direct current decreases constantly as the gate angle increases. The time integral
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Computers & Technology by vikas tomar at 7:57 PM on July 26, 2008
is the power of the passband. Because power is proportional to the square of voltage, the voltage signal is of the passband voltage at the corner frequency. Hence, the corner frequency is also known as the 3 d. Because power is proportional to the square of voltage, the voltage signal is of the passband voltage at the corner frequency. Hence, the corner frequency is also known as the 3 dB point because is close
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Computers & Technology by Nawraj at 11:28 PM on June 27, 2008
Hi A typical application of a power supply is to convert utility AC voltage into regulated DC voltages required for electronic equipment. Nowadays in most power sources the energy flow is controlled transformer. SMPS, in addition to being lighter and more efficient, afford better regulation of voltages. Theyre a bit harder to work on, but the benefits far outweigh that little inconvenience. FYI, they can
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Computers & Technology by Venendra at 9:25 PM on October 13, 2008
contains two columns, one for ground, one for a supply voltage. But A bus strip usually contains two columns..., one for ground, one for a supply voltage. But some breadboards only provide a single-column power distributions bus strip on each long side. Typically the column intended for a supply voltage is marked in red, while the column for ground is marked in blue or black. Some manufacturers connect all
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Computers & Technology by Anju Singh at 12:17 PM on June 05, 2008
A negative voltage is determined by how the circuit reacts to either hole flow, or electron flow. A hole is an absense of an electron, a "home" for an electron of sorts, and it has a positive potential. An electron has a negative potential. They are drawn to each other.A negative voltage means the electrons are going the other way to the way your voltmeter things they should go, turn you
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Computers & Technology by Renjith at 5:00 PM on April 28, 2008
. By controlling the AC frequency with a variable frequency drive, you control speed. A proper voltage to frequency ratio V/HZ must be supplied. For most industrial motors manufactured in the US this ratio is 460 volts to 60HZ or 7.6:1. I.E.: to achieve 10 speed, you should supply 10 frequency or 6 HZ. To properly apply electric power at 6HZ the output voltage of the variable frequency drive must be 45.6 volts 6HZ
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Computers & Technology by archita at 3:18 AM on June 30, 2008
