transformer protection
... current is very small and relay does not operate. Modified differential protection scheme is used to over come this. Two phase elements (PC and PA) and balancing resistor(BR) is connected in star and the earth relay(ER) is connected between the star point and neutral pilot wire. ...
... current is very small and relay does not operate. Modified differential protection scheme is used to over come this. Two phase elements (PC and PA) and balancing resistor(BR) is connected in star and the earth relay(ER) is connected between the star point and neutral pilot wire. ...
AG21195206
... www.ijera.com Vol. 2, Issue 1, Jan-Feb 2012, pp.195-206 constant off-time control. With a wide input and load range, both techniques have to operate with a wide switching frequency range, making it not easy to design resonant converters optimally. 2.Flyback Converter 2.1 Introduction Flyback convert ...
... www.ijera.com Vol. 2, Issue 1, Jan-Feb 2012, pp.195-206 constant off-time control. With a wide input and load range, both techniques have to operate with a wide switching frequency range, making it not easy to design resonant converters optimally. 2.Flyback Converter 2.1 Introduction Flyback convert ...
FT100-LV Auto Detuned Filter Cap Bank Technical Spec
... The Control permit selection of a target power factor, adjustable to any value between 0.90 lagging to leading P.F. Controls continuously sense the P.F. on circuits being and, when the power factor differs from the target setting with programmable switched time operation (close and open contactor). ...
... The Control permit selection of a target power factor, adjustable to any value between 0.90 lagging to leading P.F. Controls continuously sense the P.F. on circuits being and, when the power factor differs from the target setting with programmable switched time operation (close and open contactor). ...
Audio Circuits - Part 1 - Audio Engineering Society
... Longitudinal Currents ~h~ manner in which longitudinal voltage, T I = ,is determined by the loninduced currents are introduced in a gitudinal impedance to ground of the circuit under representative field con- input circuit of the amplifier. Recapitulating, the noise iEtroduced &tions is shown schema ...
... Longitudinal Currents ~h~ manner in which longitudinal voltage, T I = ,is determined by the loninduced currents are introduced in a gitudinal impedance to ground of the circuit under representative field con- input circuit of the amplifier. Recapitulating, the noise iEtroduced &tions is shown schema ...
MAX8822 Ultra-Efficient Negative Charge-Pump LED General Description
... and other handheld devices. By utilizing a proprietary negative 0.5x inverting charge pump and innovative independent low-dropout (LDO) adaptive current regulators, very high efficiency is achieved over the full 1-cell Li+ battery voltage range, even with large LED VF mismatch. The 1MHz fixed-freque ...
... and other handheld devices. By utilizing a proprietary negative 0.5x inverting charge pump and innovative independent low-dropout (LDO) adaptive current regulators, very high efficiency is achieved over the full 1-cell Li+ battery voltage range, even with large LED VF mismatch. The 1MHz fixed-freque ...
here
... The discussion above assumed that you had a circuit that output 12 volts for a high and 0 volts for low. Unfortunately standard TTL uses logic levels of about 3.5 volts and 0 volts. You could simply put the output of each gate through a comparator (as in the flash A/D lab), but the wiring gets messy ...
... The discussion above assumed that you had a circuit that output 12 volts for a high and 0 volts for low. Unfortunately standard TTL uses logic levels of about 3.5 volts and 0 volts. You could simply put the output of each gate through a comparator (as in the flash A/D lab), but the wiring gets messy ...
Preliminary Datasheet - MAP3702
... shutdown, the input supply current for the device is less than 1uA(max). Although the internal boost MOSFET does not switch in shutdown, there is still a DC current path between the input and the LEDs through the inductor and schottky diode. The minimum forward voltage of the LED array must exceed t ...
... shutdown, the input supply current for the device is less than 1uA(max). Although the internal boost MOSFET does not switch in shutdown, there is still a DC current path between the input and the LEDs through the inductor and schottky diode. The minimum forward voltage of the LED array must exceed t ...
Manual
... This apparatus allows students to easily create an electrical DC current by turning a hand crank. The two leads on the back of the apparatus allows for devices such as lamps or small motors to be attached to the apparatus. The back of the apparatus has brushes designed to collect direct current (DC) ...
... This apparatus allows students to easily create an electrical DC current by turning a hand crank. The two leads on the back of the apparatus allows for devices such as lamps or small motors to be attached to the apparatus. The back of the apparatus has brushes designed to collect direct current (DC) ...
STEVAL-ISA063V2
... converter based on STMicroelectronics’ STBB1APUR high efficiency single inductor dual mode buck-boost DC-DC converter. The device is fixed frequency and capable of providing output voltages ranging from 1.2 V to 5.5 V and input voltages from 2.0 V to 5.5 V. The STBB1-APUR can operate with input volt ...
... converter based on STMicroelectronics’ STBB1APUR high efficiency single inductor dual mode buck-boost DC-DC converter. The device is fixed frequency and capable of providing output voltages ranging from 1.2 V to 5.5 V and input voltages from 2.0 V to 5.5 V. The STBB1-APUR can operate with input volt ...
08c_Picture_This
... that the applied voltages are correct that the circuit is not powered that the circuit is grounded that the circuit is operating at the frequency ...
... that the applied voltages are correct that the circuit is not powered that the circuit is grounded that the circuit is operating at the frequency ...
Ch 17 Electromagnetic Induction
... (ii) The current sensor is used to monitor the current induced in the long wire. (iii)The respective current-time graphs for upward and downward motions are shown on the computer. (d) Result and conclusion: Fig. 17.7(b)(c) (p. 147) A current flows through the wire if its ends are connected to a clos ...
... (ii) The current sensor is used to monitor the current induced in the long wire. (iii)The respective current-time graphs for upward and downward motions are shown on the computer. (d) Result and conclusion: Fig. 17.7(b)(c) (p. 147) A current flows through the wire if its ends are connected to a clos ...
NSEQ-2 Twin Topology Stereo Parametric Equalizer
... Never, under any circumstances, remove the top cover. Refer to a qualified electronics technician any and all servicing, tube replacement, and other operations which require the top cover to be removed. Congratulations on your purchase of the Millennia Media NSEQ-2 with Twin Topology. The NSEQ-2 is ...
... Never, under any circumstances, remove the top cover. Refer to a qualified electronics technician any and all servicing, tube replacement, and other operations which require the top cover to be removed. Congratulations on your purchase of the Millennia Media NSEQ-2 with Twin Topology. The NSEQ-2 is ...
multi channel hipot tester model 19020 series
... to14kV peak-peak) and cause the fixture to be damaged and erroneous judgment. Chroma 19020 synchronizes the output signal so there is no high voltage difference on the adjacent two ends that not only can extend the life of production equipment but also reduce the occurrence of misjudgment. ...
... to14kV peak-peak) and cause the fixture to be damaged and erroneous judgment. Chroma 19020 synchronizes the output signal so there is no high voltage difference on the adjacent two ends that not only can extend the life of production equipment but also reduce the occurrence of misjudgment. ...
More about LED
... Luminous intensity of LED depends on the current flowing through it. Typical LED requires minimum 20 mA current to give sufficient brightness. Some semiconductor material is affected by temperature. High power Red and Orange LEDs suffer light loss at high temperature. The light output and viewing an ...
... Luminous intensity of LED depends on the current flowing through it. Typical LED requires minimum 20 mA current to give sufficient brightness. Some semiconductor material is affected by temperature. High power Red and Orange LEDs suffer light loss at high temperature. The light output and viewing an ...
Maintaining Voltage-Current Phase Relationships in Power Quality
... transformer correction (ITC) corrects for error in the individual voltage and current circuits in real time. This produces the same benefit to power and energy calculations as the power transformer correction method but with the advantage of also correcting the individual voltage and current reading ...
... transformer correction (ITC) corrects for error in the individual voltage and current circuits in real time. This produces the same benefit to power and energy calculations as the power transformer correction method but with the advantage of also correcting the individual voltage and current reading ...
National Electrical Code
... performed the reconditioning. • New--110.26 (A)(4)—Working space—Limited access-will allow exceptions in ceilings and crawl spaces where compliance is not ...
... performed the reconditioning. • New--110.26 (A)(4)—Working space—Limited access-will allow exceptions in ceilings and crawl spaces where compliance is not ...
ANSI_ SCTE 46 2002R2007
... Use a DVM (item #7) in series with the DC output or the electronic load ammeter (item #4) may also be used. If the power supply being tested has multiple DC voltage outputs adjust each DC output to the specified maximum output load current. Readjust the input AC voltage if it has changed. 4.1.3. Usi ...
... Use a DVM (item #7) in series with the DC output or the electronic load ammeter (item #4) may also be used. If the power supply being tested has multiple DC voltage outputs adjust each DC output to the specified maximum output load current. Readjust the input AC voltage if it has changed. 4.1.3. Usi ...
−48-V ATCA Module Hot Swap Using the TPS2393 Application Note Jim Bird
... requires 4.1 A at −48 V. That same load requires 6.25 A at −32 V. Since I2R losses rise with the square of the current the potential for overstressing power elements on the board is quite real. All current carrying components would have to be sized for the 34% increase in nominal current. A second r ...
... requires 4.1 A at −48 V. That same load requires 6.25 A at −32 V. Since I2R losses rise with the square of the current the potential for overstressing power elements on the board is quite real. All current carrying components would have to be sized for the 34% increase in nominal current. A second r ...
Alternating current
Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).