AD53500 英文数据手册DataSheet 下载
... output transistor Q49 creates a voltage drop across the 5 Ω resistor, which turns on PNP transistor Q48. Q48 diverts the rising-edge slew current, shutting down the current mirror and removing the output stage’s base drive. The VHDCPL pin should be bypassed to the positive supply with a 0.039 µF cap ...
... output transistor Q49 creates a voltage drop across the 5 Ω resistor, which turns on PNP transistor Q48. Q48 diverts the rising-edge slew current, shutting down the current mirror and removing the output stage’s base drive. The VHDCPL pin should be bypassed to the positive supply with a 0.039 µF cap ...
chapter1
... • ICs have made digital systems more reliable by reducing the number of external interconnection from one device to another. • ICs have reduced the amount of electrical power needed to perform a given function. • IC cannot handle very large currents or voltages because the heat generated in such sma ...
... • ICs have made digital systems more reliable by reducing the number of external interconnection from one device to another. • ICs have reduced the amount of electrical power needed to perform a given function. • IC cannot handle very large currents or voltages because the heat generated in such sma ...
Simple Circuits
... Electric current (I) is the movement of charge from one place to another due to difference in electric potential or voltage (V). The ability to restrict the flow of charge through an object is characterized by its resistance (R). If a voltage is applied across an object and the resulting current is ...
... Electric current (I) is the movement of charge from one place to another due to difference in electric potential or voltage (V). The ability to restrict the flow of charge through an object is characterized by its resistance (R). If a voltage is applied across an object and the resulting current is ...
FAN7930C Critical Conduction Mode PFC Controller
... current is generated from the COMP pin by the transconductance amplifier. The error amplifier output is compared with the internal sawtooth waveform to give proper turn-on time based on the controller. Figure 29. ...
... current is generated from the COMP pin by the transconductance amplifier. The error amplifier output is compared with the internal sawtooth waveform to give proper turn-on time based on the controller. Figure 29. ...
Lect18
... A. It is an A.C. voltage source. Output voltage appears at the terminals and is sinusoidal in time with an angular frequency w. Oscillating circuits have both AC voltage and current. ...
... A. It is an A.C. voltage source. Output voltage appears at the terminals and is sinusoidal in time with an angular frequency w. Oscillating circuits have both AC voltage and current. ...
Chapter 35 Electric Circuits
... • In a series circuit, the current can only take one path. • All the current flows through every part of the circuit. – Christmas Lights – if you remove one bulb and the whole strand goes out, then they were made in series. ...
... • In a series circuit, the current can only take one path. • All the current flows through every part of the circuit. – Christmas Lights – if you remove one bulb and the whole strand goes out, then they were made in series. ...
LTC3201 - 100mA Ultralow Noise Charge Pump LED Supply with
... stored on the output capacitor. The output capacitor also serves to form the dominant pole of the loop. To prevent ringing or instability, it is important for the output capacitor to maintain at least 0.47µF over all ambient and ...
... stored on the output capacitor. The output capacitor also serves to form the dominant pole of the loop. To prevent ringing or instability, it is important for the output capacitor to maintain at least 0.47µF over all ambient and ...
On-site Measurement of Load and No-load Losses of
... Abstract: - Present development and production of power transformers with lower losses in addition to replacement of outdated transformers assume regular measurement of losses in both load and no-load regime. These measurements are very demanding especially in the case of on-situ measurements. The c ...
... Abstract: - Present development and production of power transformers with lower losses in addition to replacement of outdated transformers assume regular measurement of losses in both load and no-load regime. These measurements are very demanding especially in the case of on-situ measurements. The c ...
BD6393FP
... This IC has a built in over current protection circuit as a provision against destruction when the motor outputs are shorted each other or Vcc-motor output or motor output-GND is shorted. This circuit latches the motor output to OPEN condition when the regulated threshold current flows for 4μs (Typ. ...
... This IC has a built in over current protection circuit as a provision against destruction when the motor outputs are shorted each other or Vcc-motor output or motor output-GND is shorted. This circuit latches the motor output to OPEN condition when the regulated threshold current flows for 4μs (Typ. ...
The Coin Detector Circuit - Asee peer logo
... II. Individual Stages of the Circuit A. The Coin Slot The design of the coin slot is in Figure 2 below. The material of this slot is non-metallic so that the value of the inductor on the slot is not affected. The U-shape slot provides a smooth passage for the coins to roll down the slope. A 33mH in ...
... II. Individual Stages of the Circuit A. The Coin Slot The design of the coin slot is in Figure 2 below. The material of this slot is non-metallic so that the value of the inductor on the slot is not affected. The U-shape slot provides a smooth passage for the coins to roll down the slope. A 33mH in ...
AN3410
... approximation (of the constant-power curve) should give equal voltage from the average line voltage and the average input current. The value of R22 is determined from the usual calculations (see ST’s excellent application note AN1059, reference 1). The average input current (in R22) can now be calcu ...
... approximation (of the constant-power curve) should give equal voltage from the average line voltage and the average input current. The value of R22 is determined from the usual calculations (see ST’s excellent application note AN1059, reference 1). The average input current (in R22) can now be calcu ...
Electrical Characteristics and Thermal Reliability of Stacked
... At equation (1), VBE (Q1PNP) and VBE (Q3NPN) are the emitter-base voltages of Q1, and Q3, respectively. VRn2 and VRp-drift are the voltage in Rn2 and Rp-drift, respectively. This is due to the free carriers that are injected from the emitter regions of the two BJTs. Therefore, the lateral dimension, ...
... At equation (1), VBE (Q1PNP) and VBE (Q3NPN) are the emitter-base voltages of Q1, and Q3, respectively. VRn2 and VRp-drift are the voltage in Rn2 and Rp-drift, respectively. This is due to the free carriers that are injected from the emitter regions of the two BJTs. Therefore, the lateral dimension, ...
LM1085 - Texas Instruments
... Overload recovery refers to regulator's ability to recover from a short circuited output. A key factor in the recovery process is the current limiting used to protect the output from drawing too much power. The current limiting circuit reduces the output current as the input to output differential i ...
... Overload recovery refers to regulator's ability to recover from a short circuited output. A key factor in the recovery process is the current limiting used to protect the output from drawing too much power. The current limiting circuit reduces the output current as the input to output differential i ...
COOLPRO CATHODIC CONVERTERTM
... anode and the structure. Ground bed resistance changes with many factors but the major one is ground moisture content. However at any two given times, if the setup and environment are completely unchanged, a given output voltage will produce the same output current. Struct/ref potential is related t ...
... anode and the structure. Ground bed resistance changes with many factors but the major one is ground moisture content. However at any two given times, if the setup and environment are completely unchanged, a given output voltage will produce the same output current. Struct/ref potential is related t ...
Power electronics
Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)