Switched-capacitor power electronics circuits
... ratio, he or she can use n capacitors instead of two in each subcircuit, which results in Vo ≈ Vi / n, if the losses are neglected. A similar step-up converter can be designed by charging each group of capacitors in parallel from the input voltage in each of the odd topologies, while discharging the ...
... ratio, he or she can use n capacitors instead of two in each subcircuit, which results in Vo ≈ Vi / n, if the losses are neglected. A similar step-up converter can be designed by charging each group of capacitors in parallel from the input voltage in each of the odd topologies, while discharging the ...
Telecommunications Earthing Training
... The selection of appropriate surge protection devices can be simplified if there was a basic understanding of key yardsticks, that can be used to size up a surge protection device and core technologies could be understood. This training will provide this understanding. a) Introducing the concepts of ...
... The selection of appropriate surge protection devices can be simplified if there was a basic understanding of key yardsticks, that can be used to size up a surge protection device and core technologies could be understood. This training will provide this understanding. a) Introducing the concepts of ...
RMS Voltage For a driving voltage of the form or a current of the form
... across an inductor leads the current by 90 degrees”? ...
... across an inductor leads the current by 90 degrees”? ...
AP8800A Description Pin Assignments
... This rising current produces a voltage ramp across RSET. The internal circuit of the AP8800A senses the voltage across RSET and applies a proportional voltage to the input of the internal comparator. When this voltage reaches an internally set upper threshold, the internal switch is turned off. The ...
... This rising current produces a voltage ramp across RSET. The internal circuit of the AP8800A senses the voltage across RSET and applies a proportional voltage to the input of the internal comparator. When this voltage reaches an internally set upper threshold, the internal switch is turned off. The ...
Development of “NeoCapacitor,” a High-Voltage Functional
... the use of conductive polymer in the cathode layer. Conductive polymer has higher electrical conductivity than the previously used manganese dioxide material and allows the equivalent series resistance (ESR) to be reduced significantly. At NEC TOKIN, we have been developing products by setting their ...
... the use of conductive polymer in the cathode layer. Conductive polymer has higher electrical conductivity than the previously used manganese dioxide material and allows the equivalent series resistance (ESR) to be reduced significantly. At NEC TOKIN, we have been developing products by setting their ...
Physics 2511 Laboratory Manual
... not touch or turn on the laboratory equipment until it has been explained by the professor and permission has been granted to get started. The equipment for the labs are set up for you in advance, so resist the urge to play with the equipment when you arrive, as you may hurt yourself or others, or d ...
... not touch or turn on the laboratory equipment until it has been explained by the professor and permission has been granted to get started. The equipment for the labs are set up for you in advance, so resist the urge to play with the equipment when you arrive, as you may hurt yourself or others, or d ...
Electric Current and Circuits
... Engineers and designers of electrical circuits use special symbols that show the components and connections in a circuit. A drawing made with these symbols is called a circuit diagram. Follow these rules when you draw circuit ...
... Engineers and designers of electrical circuits use special symbols that show the components and connections in a circuit. A drawing made with these symbols is called a circuit diagram. Follow these rules when you draw circuit ...
FSB117H / FSB127H / FSB147H mWSaver™ Fairchild Power Switch (FPS™)
... minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while still meeting IEC61010-1 safety requirement. mWSaver™ Green Mode gradually decreases switching frequency as load decreases to minimize switching losses. A new proprietary asynchronous jitter decreases EMI emi ...
... minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while still meeting IEC61010-1 safety requirement. mWSaver™ Green Mode gradually decreases switching frequency as load decreases to minimize switching losses. A new proprietary asynchronous jitter decreases EMI emi ...
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... current. The steady state condition is reached in an infinitely short time. Although the magnitude of the current does not exceed the steady-state values, the thyristors have an upper limit of di/ dt values that they can withstand during the firing process. Here, di/ dt is infinite, and the thyristo ...
... current. The steady state condition is reached in an infinitely short time. Although the magnitude of the current does not exceed the steady-state values, the thyristors have an upper limit of di/ dt values that they can withstand during the firing process. Here, di/ dt is infinite, and the thyristo ...
ECE1250_Cards_Guide
... User specifies voltage source value and Thevenin resistance value. Can represent any linear circuit. Representing all the circuitry (i.e., cards) preceding another card may be conceptually useful. For example, using the two Thevenin equivalent cards as inputs to the Op-Amp card ...
... User specifies voltage source value and Thevenin resistance value. Can represent any linear circuit. Representing all the circuitry (i.e., cards) preceding another card may be conceptually useful. For example, using the two Thevenin equivalent cards as inputs to the Op-Amp card ...
EC6401-EC II -CAT2 SET2
... (ii) A Class C tuned amplifier has R = 6 kΩ and the tank circuit is required to have Q = 80. Calculate the values of L and C of the tank circuit. Assume Vcc = 20V, resonant frequency = 5 MHz and worst case power dissipation = 20 mW. ...
... (ii) A Class C tuned amplifier has R = 6 kΩ and the tank circuit is required to have Q = 80. Calculate the values of L and C of the tank circuit. Assume Vcc = 20V, resonant frequency = 5 MHz and worst case power dissipation = 20 mW. ...
Magnetize
... A wet cell contains two connected plates made of different metals or metal compounds in a conducting solution. Most car batteries have a series of six cells, each containing lead and lead oxide in a sulfuric acid solution. ...
... A wet cell contains two connected plates made of different metals or metal compounds in a conducting solution. Most car batteries have a series of six cells, each containing lead and lead oxide in a sulfuric acid solution. ...
Guide to Individual Circuit System Design Method Cards
... User specifies voltage source value and Thevenin resistance value. Can represent any linear circuit. Representing all the circuitry (i.e., cards) preceding another card may be conceptually useful. For example, using the two Thevenin equivalent cards as inputs to the Op-Amp card ...
... User specifies voltage source value and Thevenin resistance value. Can represent any linear circuit. Representing all the circuitry (i.e., cards) preceding another card may be conceptually useful. For example, using the two Thevenin equivalent cards as inputs to the Op-Amp card ...
NCP102MBGEVB NCP102 4 W Motherboard Evaluation Board User's Manual
... has a Vth of 2.0 V, an RqJA of 71.4°C/W and an RqJC of 3°C/W. Using RqJA and the maximum ambient temperature a TJ of 178°C is calculated. That is slightly higher than the maximum junction temperature of the device and exceeds the derating factor. As RqJA provided in the NTD40N03 datasheet is for a s ...
... has a Vth of 2.0 V, an RqJA of 71.4°C/W and an RqJC of 3°C/W. Using RqJA and the maximum ambient temperature a TJ of 178°C is calculated. That is slightly higher than the maximum junction temperature of the device and exceeds the derating factor. As RqJA provided in the NTD40N03 datasheet is for a s ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.