High Power Laser Diode Driver Based on Power Converter
... Referring to the block diagram (Fig. 1), the laser modulation is under control of an input TTL signal. This signal causes rapid switching of the switching array. When the laser is on, laser current flows through the diode. When the laser is off, only the pre-bias current flows through the diode, wit ...
... Referring to the block diagram (Fig. 1), the laser modulation is under control of an input TTL signal. This signal causes rapid switching of the switching array. When the laser is on, laser current flows through the diode. When the laser is off, only the pre-bias current flows through the diode, wit ...
Diapositive 1
... equivalent to the current Idc The simple average value of a (symmetrical) a.c. is equal to zero © David Hoult 2009 ...
... equivalent to the current Idc The simple average value of a (symmetrical) a.c. is equal to zero © David Hoult 2009 ...
1. Voltage Divider Bias
... Knowing the voltage across RE we can apply Ohm’s law to determine the current in the collector-emitter side of the circuit. Remember the current in the baseemitter circuit is much smaller, so much in fact we can for all practical purposes we say that IE approximately equals IC. IE ≈ IC ...
... Knowing the voltage across RE we can apply Ohm’s law to determine the current in the collector-emitter side of the circuit. Remember the current in the baseemitter circuit is much smaller, so much in fact we can for all practical purposes we say that IE approximately equals IC. IE ≈ IC ...
Electricity Gone Wild
... There are a bunch of track runners running around a track, they start out at a Gatorade stand gives them energy. This represents the battery. The track represents the wires. The runners represent electrons and their urge to finish the race and get more Gatorade represents the current. They burn all ...
... There are a bunch of track runners running around a track, they start out at a Gatorade stand gives them energy. This represents the battery. The track represents the wires. The runners represent electrons and their urge to finish the race and get more Gatorade represents the current. They burn all ...
MAX8633–MAX8636 Dual 300mA Pin-Programmable LDO Linear Regulators General Description
... The MAX8633–MAX8636 offer low-dropout (LDO) voltage and ultra-low-power regulation in a subminiaturized 2mm x 2mm µDFN package. The devices operate from a 2.7V to 5.5V supply and deliver up to 300mA from each output, with a typical dropout voltage of 90mV at 100mA load current. Each device is design ...
... The MAX8633–MAX8636 offer low-dropout (LDO) voltage and ultra-low-power regulation in a subminiaturized 2mm x 2mm µDFN package. The devices operate from a 2.7V to 5.5V supply and deliver up to 300mA from each output, with a typical dropout voltage of 90mV at 100mA load current. Each device is design ...
Application Note AN-6014 Green Current Mode PWM Controller FAN7602 1. Introduction www.fairchildsemi.com
... filter the input voltage ripple. If this filter is not enough, the LUVP function works unintentionally at lowest input voltage. The filter time constant is Rin1*Cin because Rin2 is much higher than Rin1 and a proper value for the time constant is about 10ms. Because Rin2 value must be high to reduce ...
... filter the input voltage ripple. If this filter is not enough, the LUVP function works unintentionally at lowest input voltage. The filter time constant is Rin1*Cin because Rin2 is much higher than Rin1 and a proper value for the time constant is about 10ms. Because Rin2 value must be high to reduce ...
isl8014 - ISL8014 - 4A Low Quiescent Current 1MHz High Efficiency
... The ISL8014 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 4A continuous output current from a 2.7V to 5.5V input supply. It uses a current control architecture to deliver very low duty cycle operation at high frequency with fast transient response and ...
... The ISL8014 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 4A continuous output current from a 2.7V to 5.5V input supply. It uses a current control architecture to deliver very low duty cycle operation at high frequency with fast transient response and ...
PNOZ X5 Data sheet
... PNOZ X5 Unit features ` Positive-guided relay outputs: – 2 safety contacts (N/O), instantaneous ` Connection options for: – E-STOP pushbutton – Safety gate limit switch – Reset button – Light barriers ` LED indicator for: – Switch status channel 1/2 – Supply voltage ` See order reference for unit ty ...
... PNOZ X5 Unit features ` Positive-guided relay outputs: – 2 safety contacts (N/O), instantaneous ` Connection options for: – E-STOP pushbutton – Safety gate limit switch – Reset button – Light barriers ` LED indicator for: – Switch status channel 1/2 – Supply voltage ` See order reference for unit ty ...
50-MHz Low-Distortion High-CMRR Rail-to-Rail I/O, Single-Supply Operational Amplifier OPA365-Q1 OPA2365-Q1 FEATURES
... The OPA365 may be used in applications where driving a capacitive load is required. As with all op amps, there may be specific instances where the OPA365 can become unstable, leading to oscillation. The particular op amp circuit configuration, layout, gain and output loading are some of the factors ...
... The OPA365 may be used in applications where driving a capacitive load is required. As with all op amps, there may be specific instances where the OPA365 can become unstable, leading to oscillation. The particular op amp circuit configuration, layout, gain and output loading are some of the factors ...
VCE Physics
... The Charge Carriers in a circuit obtain their energy from a power source or ____________ ______________. The amount of energy the charge carriers pick up depends upon the size of the potential difference difference through which they are forced to travel. Since energy transferred = work done, anothe ...
... The Charge Carriers in a circuit obtain their energy from a power source or ____________ ______________. The amount of energy the charge carriers pick up depends upon the size of the potential difference difference through which they are forced to travel. Since energy transferred = work done, anothe ...
Switching Regulator Fundamentals (Rev. A)
... PWM CONTROL Figure 11. Push-Pull Converter The converter operates by turning on each transistor on alternate cycles (the two transistors are never on at the same time). Transformer secondary current flows at the same time as primary current (when either of the switches is on). For example, when tran ...
... PWM CONTROL Figure 11. Push-Pull Converter The converter operates by turning on each transistor on alternate cycles (the two transistors are never on at the same time). Transformer secondary current flows at the same time as primary current (when either of the switches is on). For example, when tran ...
TPS6102x 96% Efficient Synchronous Boost Converters (Rev. A)
... Because the commonly used discrete Schottky rectifier is replaced with a low RDS(ON) PMOS switch, the power conversion efficiency reaches 96%. To avoid ground shift due to the high currents in the NMOS switch, two separate ground pins are used. The reference for all control functions is the GND pin. ...
... Because the commonly used discrete Schottky rectifier is replaced with a low RDS(ON) PMOS switch, the power conversion efficiency reaches 96%. To avoid ground shift due to the high currents in the NMOS switch, two separate ground pins are used. The reference for all control functions is the GND pin. ...
NCP1031POEEVB NCP1031 6.5 W POE DC-DC Converter Evaluation Board User's Manual
... regulator IC (U2). For a 5.0 W maximum output, the converter is configured as a discontinuous mode (DCM) flyback topology with the conventional TL431 and optocoupler voltage feedback scheme. Modifications to the transformer design and the control loop compensation network for continuous conduction m ...
... regulator IC (U2). For a 5.0 W maximum output, the converter is configured as a discontinuous mode (DCM) flyback topology with the conventional TL431 and optocoupler voltage feedback scheme. Modifications to the transformer design and the control loop compensation network for continuous conduction m ...
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.