Review for Exam2 -Sample Questions - UMD Physics
... 5. Apple is advertising its new 3 megapixel display iPad as having a “retinal display”, i.e., the screen contains 3 x 106 dots that show color and is claimed to have as high a density of display pixels as your retina has detector pixels (cones). Let’s see how good this statement is by estimating the ...
... 5. Apple is advertising its new 3 megapixel display iPad as having a “retinal display”, i.e., the screen contains 3 x 106 dots that show color and is claimed to have as high a density of display pixels as your retina has detector pixels (cones). Let’s see how good this statement is by estimating the ...
MAX4772/MAX4773 200mA/500mA Selectable Current
... The MAX4772/MAX4773 feature a fault output (FLAG). Whenever an overcurrent condition is encountered, the MAX4772 latches FLAG low and turns the switch off. The MAX4773 latches FLAG low and keeps it low until the overcurrent conditon is removed. During this time, the switch cycles on and off in the a ...
... The MAX4772/MAX4773 feature a fault output (FLAG). Whenever an overcurrent condition is encountered, the MAX4772 latches FLAG low and turns the switch off. The MAX4773 latches FLAG low and keeps it low until the overcurrent conditon is removed. During this time, the switch cycles on and off in the a ...
Boost converter with combined control loop for a stand
... loop and ensure stability of the converter under all the operating conditions, the PV panel is also linearized at the current and voltage source regions by using (2) and (3). B. Boost converter modeling In this section state-space average modeling [10] of boost converter is performed. The model incl ...
... loop and ensure stability of the converter under all the operating conditions, the PV panel is also linearized at the current and voltage source regions by using (2) and (3). B. Boost converter modeling In this section state-space average modeling [10] of boost converter is performed. The model incl ...
SIOV metal oxide varistors, Selection procedure
... If semiconductor devices like diodes, thyristors and triacs are paralleled with SIOVs for protection, they may do with lower reverse-voltage strength. This leads to a marked cost reduction and can be the factor that really makes a circuit competitive. ...
... If semiconductor devices like diodes, thyristors and triacs are paralleled with SIOVs for protection, they may do with lower reverse-voltage strength. This leads to a marked cost reduction and can be the factor that really makes a circuit competitive. ...
Mesh Analysis - No-IP
... I1 = 1 A I2 = 1 A I3 = 0 A NOTE: Remember, currents flowing in opposite directions are subtracted. ...
... I1 = 1 A I2 = 1 A I3 = 0 A NOTE: Remember, currents flowing in opposite directions are subtracted. ...
Slide
... terms of cost and chip area, are therefore avoided whenever possible. For amplifier circuits, the BJT transistors operate in active region. ...
... terms of cost and chip area, are therefore avoided whenever possible. For amplifier circuits, the BJT transistors operate in active region. ...
capacitor
... Since capacitors do not pass dc, they are used for dc blocking and ac coupling. For power line decoupling, capacitors are connected between the dc supply and ground, to suppress unwanted voltage spikes that occur on the dc supply voltage due to fast switching. Capacitors are used to bypass an ac vol ...
... Since capacitors do not pass dc, they are used for dc blocking and ac coupling. For power line decoupling, capacitors are connected between the dc supply and ground, to suppress unwanted voltage spikes that occur on the dc supply voltage due to fast switching. Capacitors are used to bypass an ac vol ...
MAX3966 LED Driver with Programmable Prebias Voltage General Description
... amplified by the output stages, which are implemented with NPN current mirrors. LED package lead inductance causes ringing and overshoot, which can be compensated with an RC filter network. The MAX3966 includes 35Ω and 12pF of internal compensation. The compensation network can be optimized by addin ...
... amplified by the output stages, which are implemented with NPN current mirrors. LED package lead inductance causes ringing and overshoot, which can be compensated with an RC filter network. The MAX3966 includes 35Ω and 12pF of internal compensation. The compensation network can be optimized by addin ...
UCC2813-0-Q1 数据资料 dataSheet 下载
... † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to ...
... † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to ...
GE Model RR-7 Lighting Relays are mechanical latching
... GE Model RR-7 Lighting Relays are mechanical latching-type units requiring only momentary 24 VAC switch circuit pulses to open or close line voltage circuits. All GE low voltage relays may be used to full-rated capacity for tungsten filament, ballast, or resistive loads. • SPECIFICATIONS General inf ...
... GE Model RR-7 Lighting Relays are mechanical latching-type units requiring only momentary 24 VAC switch circuit pulses to open or close line voltage circuits. All GE low voltage relays may be used to full-rated capacity for tungsten filament, ballast, or resistive loads. • SPECIFICATIONS General inf ...
MAX16838 Integrated, 2-Channel, High-Brightness LED Driver with High-Voltage Boost and SEPIC Controller
... features an adaptive output-voltage adjustment scheme that minimizes the power dissipation in the LED current sink paths. The MAX16838 can be combined with the MAX15054 to achieve a buck-boost LED driver with two integrated current sinks. The channel current is adjustable from 20mA to 150mA using an ...
... features an adaptive output-voltage adjustment scheme that minimizes the power dissipation in the LED current sink paths. The MAX16838 can be combined with the MAX15054 to achieve a buck-boost LED driver with two integrated current sinks. The channel current is adjustable from 20mA to 150mA using an ...
TRIAC
TRIAC, from triode for alternating current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor.TRIACs are a subset of thyristors and are closely related to silicon controlled rectifiers (SCR). However, unlike SCRs, which are unidirectional devices (that is, they can conduct current only in one direction), TRIACs are bidirectional and so allow current in either direction. Another difference from SCRs is that TRIAC current can be enabled by either a positive or negative current applied to its gate electrode, whereas SCRs can be triggered only by positive current into the gate. To create a triggering current, a positive or negative voltage has to be applied to the gate with respect to the MT1 terminal (otherwise known as A1).Once triggered, the device continues to conduct until the current drops below a certain threshold called the holding current.The bidirectionality makes TRIACs very convenient switches for alternating-current (AC) circuits, also allowing them to control very large power flows with milliampere-scale gate currents. In addition, applying a trigger pulse at a controlled phase angle in an AC cycle allows control of the percentage of current that flows through the TRIAC to the load (phase control), which is commonly used, for example, in controlling the speed of low-power induction motors, in dimming lamps, and in controlling AC heating resistors.