70 W HID lamp ballast based on the L6569, L6385E and L6562A
... Constant power control circuit In this solution, the voltage on pin 3 of U2 (L6562A) is fixed, therefore, during the warmup time, pin 2 of U2 is clamped at its upper threshold, so the input peak current detected by pin 4 is also fixed. Once the lamp power increases with the lamp voltage increase, pi ...
... Constant power control circuit In this solution, the voltage on pin 3 of U2 (L6562A) is fixed, therefore, during the warmup time, pin 2 of U2 is clamped at its upper threshold, so the input peak current detected by pin 4 is also fixed. Once the lamp power increases with the lamp voltage increase, pi ...
差分放大器系列AD8253 数据手册DataSheet 下载
... programmable gains that has gigaohm (GΩ) input impedance, low output noise, and low distortion, making it suitable for interfacing with sensors and driving high sample rate analog-todigital converters (ADCs). ...
... programmable gains that has gigaohm (GΩ) input impedance, low output noise, and low distortion, making it suitable for interfacing with sensors and driving high sample rate analog-todigital converters (ADCs). ...
Optocoupler, Phototriac Output, Zero Crossing, High dV/dt, Low
... In order to achieve control with certain inductive loads of power factors is less than 0.8, the rate of rise in voltage (dV/dt) must be limited by a series RC network placed in parallel with the power handling triac. The RC network is called snubber circuit. Note that the value of the capacitor incr ...
... In order to achieve control with certain inductive loads of power factors is less than 0.8, the rate of rise in voltage (dV/dt) must be limited by a series RC network placed in parallel with the power handling triac. The RC network is called snubber circuit. Note that the value of the capacitor incr ...
ETSO-C174
... (breakdown) of voltage of such separation devices will exceed three times the BEPU rated voltage. (p) The maximum output voltage ripple cannot exceed the limits stated in MILSTD-704F. Note this limit does not include the ripple already on the input line into the BEPU. (See Figure A-3 at the end of t ...
... (breakdown) of voltage of such separation devices will exceed three times the BEPU rated voltage. (p) The maximum output voltage ripple cannot exceed the limits stated in MILSTD-704F. Note this limit does not include the ripple already on the input line into the BEPU. (See Figure A-3 at the end of t ...
LM124/LM224/LM324/LM2902 Low Power Quad Operational
... The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V (at 25°C). The upper end of the common-mode voltage range is V+ − 1.5 V (at 25°C), but either or both inputs can go to 32 V without damage (26 V for LM2902-N), independent of the magn ...
... The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V (at 25°C). The upper end of the common-mode voltage range is V+ − 1.5 V (at 25°C), but either or both inputs can go to 32 V without damage (26 V for LM2902-N), independent of the magn ...
AS1341
... The AS1341 uses a proprietary current-limiting control scheme with operation up to 100% duty cycle. The DC-DC converter pulses as needed to maintain regulation, resulting in a variable switching frequency that increases with the load. This eliminates the high-supply currents associated with conventi ...
... The AS1341 uses a proprietary current-limiting control scheme with operation up to 100% duty cycle. The DC-DC converter pulses as needed to maintain regulation, resulting in a variable switching frequency that increases with the load. This eliminates the high-supply currents associated with conventi ...
MAX9989/MAX9990 +14dBm to +20dBm LO Buffers with ±1dB Variation General Description
... for the amplifiers are adjustable through off-chip resistors, allowing the output level to be precision set anywhere from +14dBm to +20dBm. The PLL output is preset to +3dBm (about 900mVP-P into 50Ω). Power levels are typically ±1dB over the full supply, input power, and temperature range. Precision ...
... for the amplifiers are adjustable through off-chip resistors, allowing the output level to be precision set anywhere from +14dBm to +20dBm. The PLL output is preset to +3dBm (about 900mVP-P into 50Ω). Power levels are typically ±1dB over the full supply, input power, and temperature range. Precision ...
S280-77-8
... transformers and has negligible effects on the Form 4C control. The input current is fed through another current transformer whose secondary is connected across a resistance to establish an ac voltage proportional to line current. This voltage is then full-wave rectified by a set of Schottky diodes ...
... transformers and has negligible effects on the Form 4C control. The input current is fed through another current transformer whose secondary is connected across a resistance to establish an ac voltage proportional to line current. This voltage is then full-wave rectified by a set of Schottky diodes ...
ADS901 数据资料 dataSheet 下载
... The easiest way to achieve the required reference voltages is to place the reference ladder of the ADS901 between the supply rails, as shown in Figure 5. Two additional resistors (RT, RB) are necessary to set the correct current through the ladder. However depending on the desired full-scale swing a ...
... The easiest way to achieve the required reference voltages is to place the reference ladder of the ADS901 between the supply rails, as shown in Figure 5. Two additional resistors (RT, RB) are necessary to set the correct current through the ladder. However depending on the desired full-scale swing a ...
Power Quality Issues, Disturbance Sources, Financial Impacts
... 1996 Version of the IT Industry Tolerance Curves (update from original CBEMA curve). The vertical axis is percent of nominal voltage. "Well-designed" equipment should be able to tolerate any power event that lies in the shaded area. Note that the curve includes sags, swells, and transient overvoltag ...
... 1996 Version of the IT Industry Tolerance Curves (update from original CBEMA curve). The vertical axis is percent of nominal voltage. "Well-designed" equipment should be able to tolerate any power event that lies in the shaded area. Note that the curve includes sags, swells, and transient overvoltag ...
Aalborg Universitet
... central secondary control Communication has a predominant role in providing the infrastructure that enables data to be exchange among the different elements of the MG. This importance increases when distributed control approach is used for the secondary level of the MGs hierarchical control. In this ...
... central secondary control Communication has a predominant role in providing the infrastructure that enables data to be exchange among the different elements of the MG. This importance increases when distributed control approach is used for the secondary level of the MGs hierarchical control. In this ...
Novel Three-Phase CM/DM Conducted Emission Separator
... of parasitic elements on the noise separation is investigated based on the circuit shown in Fig. 5. There, the transformer has been replaced by an equivalent circuit, which accounts for the leakage (Lσ ) and magnetizing (LM ) inductances, as well as for the parasitic capacitances (C1 . . . C6 ) [23] ...
... of parasitic elements on the noise separation is investigated based on the circuit shown in Fig. 5. There, the transformer has been replaced by an equivalent circuit, which accounts for the leakage (Lσ ) and magnetizing (LM ) inductances, as well as for the parasitic capacitances (C1 . . . C6 ) [23] ...
Sample June Exam for Pilot course
... The total energy, or ‘mass energy’ is given by Etot = γmoc² which is also Etot = EK + moc² Thus the EK = Etot – moc² = 1.21moc² – moc² = 0.21moc² = 0.21 x 8.2 x 10-14 = 1.72 x 10-14 J Q.4 Ans: 1.7 x 108 m/s As Etot = γmoc², from the fact that the total energy is 21% more (that is 1.21 times) we can ...
... The total energy, or ‘mass energy’ is given by Etot = γmoc² which is also Etot = EK + moc² Thus the EK = Etot – moc² = 1.21moc² – moc² = 0.21moc² = 0.21 x 8.2 x 10-14 = 1.72 x 10-14 J Q.4 Ans: 1.7 x 108 m/s As Etot = γmoc², from the fact that the total energy is 21% more (that is 1.21 times) we can ...
Common Power System Model Minimum Data Requirements
... junctions. Actual modeling in CIM implementation is subject to the CIM restrictions/flexibility and interoperability conventions. - Since different systems use different assumptions on the identification of devices neither name nor number were selected as the primary identification. The requirement ...
... junctions. Actual modeling in CIM implementation is subject to the CIM restrictions/flexibility and interoperability conventions. - Since different systems use different assumptions on the identification of devices neither name nor number were selected as the primary identification. The requirement ...
CAT IV or CAT III?
... Fast (impulsive) transients We all know how dangerous a stroke of lightning can be for electrical equipment. Transients caused by lightning are a normal phenomenon on outside conductors. Very high voltage transients can occur – even up to several 10,000 volts! Note that most lightning transients are ...
... Fast (impulsive) transients We all know how dangerous a stroke of lightning can be for electrical equipment. Transients caused by lightning are a normal phenomenon on outside conductors. Very high voltage transients can occur – even up to several 10,000 volts! Note that most lightning transients are ...
NRF Series Circuit Protectors - Flexi
... manually turning OFF, make sure that the current is not applied (under no-load condition). ...
... manually turning OFF, make sure that the current is not applied (under no-load condition). ...
Switched Mode Converters (4 Quadrants)
... Topologies: Switching + Switching Type 2 (Discussion) Advantages • Fully reversible with energy sent back to mains (thyristor bridge to be added) • High frequency power converter (low volume and high dynamic performance) • High bandwidth • Good AC mains perturbation rejection • No distortion of the ...
... Topologies: Switching + Switching Type 2 (Discussion) Advantages • Fully reversible with energy sent back to mains (thyristor bridge to be added) • High frequency power converter (low volume and high dynamic performance) • High bandwidth • Good AC mains perturbation rejection • No distortion of the ...
A.V.R. - Leroy Somer
... All servicing or repair operations performed on the AVR should be undertaken by personnel trained in the commissioning, servicing and maintenance of electrical and mechanical components. ...
... All servicing or repair operations performed on the AVR should be undertaken by personnel trained in the commissioning, servicing and maintenance of electrical and mechanical components. ...
MAN. LRX 2.150/2/250/2.50 ingle
... In case LRx amplifiers are used in extremely difficult conditions (very low loads) or in installations where space is too narrow and their heat sink cooling is not enough, they can be employed together with CLK2 cooling system (optional). It is a system made of two units to apply onto the amplifier ...
... In case LRx amplifiers are used in extremely difficult conditions (very low loads) or in installations where space is too narrow and their heat sink cooling is not enough, they can be employed together with CLK2 cooling system (optional). It is a system made of two units to apply onto the amplifier ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.