2330 Level 2 Electrotechnical Technology
... department at the address below or by telephoning +44 (0)20 7294 2850 or faxing +44 (0)20 7294 ...
... department at the address below or by telephoning +44 (0)20 7294 2850 or faxing +44 (0)20 7294 ...
DC Circuits MC
... the normal way, you devise a circuit that places them in series across normal household voltage. If each one is an incandescent bulb of fixed resistance, which statement about these bulbs is correct? A) Both bulbs glow with the same brightness, but less than their normal brightness. B) The 50-W bulb ...
... the normal way, you devise a circuit that places them in series across normal household voltage. If each one is an incandescent bulb of fixed resistance, which statement about these bulbs is correct? A) Both bulbs glow with the same brightness, but less than their normal brightness. B) The 50-W bulb ...
V. Optimization of welding transformer
... B. Determination of air gap length The determination of air gap length consists of two steps which are repeated until they do not give an adequate result. The magnetic shunt is now filling the whole space between the primary and secondary windings. The used excitation is same as in the previous case ...
... B. Determination of air gap length The determination of air gap length consists of two steps which are repeated until they do not give an adequate result. The magnetic shunt is now filling the whole space between the primary and secondary windings. The used excitation is same as in the previous case ...
Experiment 3
... drop across a load resistor and measuring the current flowing through it, one was able to calculate the apparent power dissipated by the resistor (S=VI). Since the load was a pure resistance, the apparent power, S, was equal to the real power, P. Mathematically, one would say that P = VI cos . The ...
... drop across a load resistor and measuring the current flowing through it, one was able to calculate the apparent power dissipated by the resistor (S=VI). Since the load was a pure resistance, the apparent power, S, was equal to the real power, P. Mathematically, one would say that P = VI cos . The ...
FAN6754A Highly Integrated Green- Mode PWM Controller Brownout and V
... condition, the output GATE drive is turned off after a small delay, tPD. This delay introduces an additional current proportional to tPD • VIN / LP. Since the delay is nearly constant regardless of the input voltage VIN, higher input voltage results in a larger additional current and the output powe ...
... condition, the output GATE drive is turned off after a small delay, tPD. This delay introduces an additional current proportional to tPD • VIN / LP. Since the delay is nearly constant regardless of the input voltage VIN, higher input voltage results in a larger additional current and the output powe ...
AN10361 Philips BISS loadswitch solutions and the SOT666 BISS loadswitch demo board
... best fitting transistor for the application. To limit the higher number of components the use of resistor-equipped transistors (RETs, PDTC-, PDTD-series) is recommended. These are standard transistors with built-in resistors making external resistors R1 and R2 obsolete. If the current to be switched ...
... best fitting transistor for the application. To limit the higher number of components the use of resistor-equipped transistors (RETs, PDTC-, PDTD-series) is recommended. These are standard transistors with built-in resistors making external resistors R1 and R2 obsolete. If the current to be switched ...
V rms
... drop across a load resistor and measuring the current flowing through it, one was able to calculate the apparent power dissipated by the resistor (S=VI). Since the load was a pure resistance, the apparent power, S, was equal to the real power, P. Mathematically, one would say that P = VI cos . The ...
... drop across a load resistor and measuring the current flowing through it, one was able to calculate the apparent power dissipated by the resistor (S=VI). Since the load was a pure resistance, the apparent power, S, was equal to the real power, P. Mathematically, one would say that P = VI cos . The ...
FlexMod™ LVD Low Voltage Disconnect
... off due to low battery voltage, the loads will toggle on. After 15 minutes, the LVD will resume monitoring battery voltage. If during the 15 minute period the battery voltage rises above the upper limit for ten seconds, the 15 minute delay is exited and the LVD resumes monitoring battery voltage. ...
... off due to low battery voltage, the loads will toggle on. After 15 minutes, the LVD will resume monitoring battery voltage. If during the 15 minute period the battery voltage rises above the upper limit for ten seconds, the 15 minute delay is exited and the LVD resumes monitoring battery voltage. ...
B. Active Filters Topologies
... and transient distortions in the line voltage such as harmonics, flicker, swells, sags and voltage asymmetries. With the significant development of power electronics technology, especially static power converters (well known as non-linear loads), voltage harmonics resulting from current harmonics pr ...
... and transient distortions in the line voltage such as harmonics, flicker, swells, sags and voltage asymmetries. With the significant development of power electronics technology, especially static power converters (well known as non-linear loads), voltage harmonics resulting from current harmonics pr ...
Cree XLamp LED Electrical Overstress Application Note
... Unlike many other LEDs on the market, most XLamp LEDs are capable of withstanding application of reverse voltage equal to the forward voltage of the device. In other words, if the LED load is connected with reverse polarity to a power supply with an output voltage less than or equal to the forward v ...
... Unlike many other LEDs on the market, most XLamp LEDs are capable of withstanding application of reverse voltage equal to the forward voltage of the device. In other words, if the LED load is connected with reverse polarity to a power supply with an output voltage less than or equal to the forward v ...
BDTIC P F C - D C M I... T D A 4 8 6 2 / T D...
... given cycle. The multiplier output and the current sense threshold are internally clamped at 1.3 V. So the gate drive MOSFET is protected against critical operating, as they occur during start up. To prevent the input from negative pulses a special protection circuitry is implemented. Switch-on curr ...
... given cycle. The multiplier output and the current sense threshold are internally clamped at 1.3 V. So the gate drive MOSFET is protected against critical operating, as they occur during start up. To prevent the input from negative pulses a special protection circuitry is implemented. Switch-on curr ...
AND8125/D Evaluating the Power Capability of NCP101X
... auxiliary winding option. 5. “I have a converter that already runs at 130 kHz with an auxiliary winding!”: In that case, no option, provided that power budget is compatible… 6. “I need the smallest possible size”: If the frequency increase does not help to pass more power, it certainly provides a s ...
... auxiliary winding option. 5. “I have a converter that already runs at 130 kHz with an auxiliary winding!”: In that case, no option, provided that power budget is compatible… 6. “I need the smallest possible size”: If the frequency increase does not help to pass more power, it certainly provides a s ...
PDF
... 2.1 GCVI AC/DC converter 2.1.1 Gradationally controlled voltage inverter (GCVI) Figure 2 shows a schematic circuit diagram of the GCVI AC/DC converter. This circuit is configured with a general AC/DC step-up converter being connected to a GCVI circuit, which consists of series-connected inverter uni ...
... 2.1 GCVI AC/DC converter 2.1.1 Gradationally controlled voltage inverter (GCVI) Figure 2 shows a schematic circuit diagram of the GCVI AC/DC converter. This circuit is configured with a general AC/DC step-up converter being connected to a GCVI circuit, which consists of series-connected inverter uni ...
K046016266
... The breaker block implements a circuit breaker where the opening and closing times can be controlled either from an external Simulink signal (external control mode), or from an internal control timer (internal control mode). The arc extinction process is simulated by opening the breaker device when ...
... The breaker block implements a circuit breaker where the opening and closing times can be controlled either from an external Simulink signal (external control mode), or from an internal control timer (internal control mode). The arc extinction process is simulated by opening the breaker device when ...
Spark Plugs Do Tell A Story! Spark Plugs
... maximum value. The time element is determined by the resistance of the coil winding or the length of time the distributor contacts are closed. The current does not reach the maximum because the contacts remain closed for such a short time, and more so at higher engine speeds. When the breaker points ...
... maximum value. The time element is determined by the resistance of the coil winding or the length of time the distributor contacts are closed. The current does not reach the maximum because the contacts remain closed for such a short time, and more so at higher engine speeds. When the breaker points ...
1,6,7,14,20,25,28,29,31,34,36,37,40,54,57,64
... Solve: Kirchhoff’s junction law tells us that the current flowing through the 2.0 Ω resistance in the middle branch is I1 + I2 = 3.0 A. We can therefore determine I1 by applying Kirchhoff’s loop law to the left loop. Starting clockwise from the lower left corner, +9.0 V – I1(3.0 Ω) – (3.0 A)(2.0 Ω) ...
... Solve: Kirchhoff’s junction law tells us that the current flowing through the 2.0 Ω resistance in the middle branch is I1 + I2 = 3.0 A. We can therefore determine I1 by applying Kirchhoff’s loop law to the left loop. Starting clockwise from the lower left corner, +9.0 V – I1(3.0 Ω) – (3.0 A)(2.0 Ω) ...
ACDSee HP Version print job
... reference condition in the supply. A resistive load, balanced and linear is considered as the ideal reference load. A reference voltage applied to an ideal reference load will generate sinusoidal and balanced currents, in phase with voltages. Anything which produces a no conformity respect to these ...
... reference condition in the supply. A resistive load, balanced and linear is considered as the ideal reference load. A reference voltage applied to an ideal reference load will generate sinusoidal and balanced currents, in phase with voltages. Anything which produces a no conformity respect to these ...
PowerPad III Model 8333 Memory partitioned for trend
... • Create and store a complete library of configurations that can be uploaded as needed • Zoom in and out and pan through sections of the graph to analyze the data • Download, display and analyze recorded data • Display waveforms, trend graphs, harmonic spectrums, text summaries, transients, eve ...
... • Create and store a complete library of configurations that can be uploaded as needed • Zoom in and out and pan through sections of the graph to analyze the data • Download, display and analyze recorded data • Display waveforms, trend graphs, harmonic spectrums, text summaries, transients, eve ...
Electrical ballast
An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.