MAX1801 Digital Camera Step-Up Slave DC-DC Controller General Description
... where fOSC and tFALL are the oscillator frequency (in Hz) and the fall time (typically 100ns), respectively. At 100kHz, the adjustable maximum duty-cycle range is typically 28% to 92% (see Maximum Duty Cycle vs. VDCON in the Typical Operating Characteristics). The maximum duty cycle typically defaul ...
... where fOSC and tFALL are the oscillator frequency (in Hz) and the fall time (typically 100ns), respectively. At 100kHz, the adjustable maximum duty-cycle range is typically 28% to 92% (see Maximum Duty Cycle vs. VDCON in the Typical Operating Characteristics). The maximum duty cycle typically defaul ...
Forward converter Switched mode power supply (SMPS)
... widely used for low to medium power conversion applications. Figure 1 shows the schematic of the basic offline forward converter using FPS, which also serves as the reference circuit for the design procedure described in this paper. Because the MOSFET and PWM controller together with various additio ...
... widely used for low to medium power conversion applications. Figure 1 shows the schematic of the basic offline forward converter using FPS, which also serves as the reference circuit for the design procedure described in this paper. Because the MOSFET and PWM controller together with various additio ...
+ R - Purdue Physics
... If electrons were bound – we would need to apply some field to free some of them in order for current to flow. Metals do not behave like this! Semiconductors: n depends exponentially on E q nu ...
... If electrons were bound – we would need to apply some field to free some of them in order for current to flow. Metals do not behave like this! Semiconductors: n depends exponentially on E q nu ...
13 DelcoXSVolt
... can increase certain electrical component performance, but excessively high voltage can be damaging. Refer to the component owner’s manual or contact the manufacturer to determine the maximum voltage for safe operation of all aftermarket electrical components. For all original equipment components, ...
... can increase certain electrical component performance, but excessively high voltage can be damaging. Refer to the component owner’s manual or contact the manufacturer to determine the maximum voltage for safe operation of all aftermarket electrical components. For all original equipment components, ...
ID2 Intelligent 2 Wire Fire Detection
... developed by Zeta Alarm Systems and shares the same platform as our largest, most powerful system. ...
... developed by Zeta Alarm Systems and shares the same platform as our largest, most powerful system. ...
Understanding AC Power Measurements
... For the special case of a pure sinusoidal waveform, the average voltage is equivalent to the RMS value divided by a factor of 1.11. As long as the signal to be measured is sinusoidal, this ratio can be used to calculate the RMS value by performing an average voltage measurement. For non-sinusoidal s ...
... For the special case of a pure sinusoidal waveform, the average voltage is equivalent to the RMS value divided by a factor of 1.11. As long as the signal to be measured is sinusoidal, this ratio can be used to calculate the RMS value by performing an average voltage measurement. For non-sinusoidal s ...
Electricity Ch. 17 Sect. 3
... a circuit? 〉 Electrical devices can be connected as a series circuit so that the voltage is divided among the devices. They can also be connected as a parallel circuit so that the voltage is the same across each device. • series circuit: a circuit in which the parts are joined one after another such ...
... a circuit? 〉 Electrical devices can be connected as a series circuit so that the voltage is divided among the devices. They can also be connected as a parallel circuit so that the voltage is the same across each device. • series circuit: a circuit in which the parts are joined one after another such ...
Voltage Rating
... temperature rise is trivial and has no harmful effect on the circuit components. (It is important that protective devices do not react to them.) Continuous overloads can result from defective motors (such as worn motor bearings), overloaded equipment, or too many loads on one circuit. Such sustained ...
... temperature rise is trivial and has no harmful effect on the circuit components. (It is important that protective devices do not react to them.) Continuous overloads can result from defective motors (such as worn motor bearings), overloaded equipment, or too many loads on one circuit. Such sustained ...
Introduction to Meters and Voltage Measurement
... analog scales in A Guide to Lab Equipment and Laboratory Measurements at the front of this manual. 6. a. Zero your VOM as described above, then connect both it and a DMM to the power supply as in Figure 1-7. b. Using the VOM to measure the voltage, carefully set the power supply to 2 V. (Don’t look ...
... analog scales in A Guide to Lab Equipment and Laboratory Measurements at the front of this manual. 6. a. Zero your VOM as described above, then connect both it and a DMM to the power supply as in Figure 1-7. b. Using the VOM to measure the voltage, carefully set the power supply to 2 V. (Don’t look ...
the Note
... resistors in series is added, the total potential difference in a circuit is found (V1 + V2 = VT). For that reason resistors in series are said to be potential difference dividers. The potential difference across a set of resistors connected in parallel is the same. However, the current in the vario ...
... resistors in series is added, the total potential difference in a circuit is found (V1 + V2 = VT). For that reason resistors in series are said to be potential difference dividers. The potential difference across a set of resistors connected in parallel is the same. However, the current in the vario ...
Homework 2
... (24 points) We’ve seen in class that the ideal voltmeter looks like an open circuit, and that the ideal ammeter looks like a short circuit, so as not to affect the circuit it’s measuring. However, in real life—the world in which engineers operate—voltmeters and ammeters aren’t ideal. Voltmeters take ...
... (24 points) We’ve seen in class that the ideal voltmeter looks like an open circuit, and that the ideal ammeter looks like a short circuit, so as not to affect the circuit it’s measuring. However, in real life—the world in which engineers operate—voltmeters and ammeters aren’t ideal. Voltmeters take ...
Exercise 3 Analyses of Parameters and Characteristics of MOS
... name of the variable in box DC voltage. The same variable name you should type in ADE, menu Variables Edit as well. 2) DC analysis In ADE go to Analyses Choose dc. Check Vds as a source and set its range to be from 0 to 2.5V. For the simulation we need the transistor’s drain current Id. In ord ...
... name of the variable in box DC voltage. The same variable name you should type in ADE, menu Variables Edit as well. 2) DC analysis In ADE go to Analyses Choose dc. Check Vds as a source and set its range to be from 0 to 2.5V. For the simulation we need the transistor’s drain current Id. In ord ...
功率变换
... IEC 61000-3-2 standards set regulations to limit the harmonics injected into the AC line by any equipment drawing more than 75 W of input power for class D equipment (TV sets, PC monitors, desktop PCs) and 25 W for class C equipment (lighting). A front-end Power Factor Controller is then required in ...
... IEC 61000-3-2 standards set regulations to limit the harmonics injected into the AC line by any equipment drawing more than 75 W of input power for class D equipment (TV sets, PC monitors, desktop PCs) and 25 W for class C equipment (lighting). A front-end Power Factor Controller is then required in ...
AD22057 数据手册DataSheet 下载
... a power transistor that is either cut off or saturated by a pulse at its base; the duty-cycle of the pulse determines the average current. This current is sensed in a small resistor. The average differential voltage across this resistor is typically 100 mV, although its peak value will be higher by ...
... a power transistor that is either cut off or saturated by a pulse at its base; the duty-cycle of the pulse determines the average current. This current is sensed in a small resistor. The average differential voltage across this resistor is typically 100 mV, although its peak value will be higher by ...
TT11 Circuit Breakers Name How Circuit Breakers Work by Tom
... In building wiring, the hot wire and the neutral wire never touch directly. The charge running through the circuit always passes through an appliance, which acts as a resistor. In this way, the electrical resistance in appliances limits how much charge can flow through a circuit (with a constant vol ...
... In building wiring, the hot wire and the neutral wire never touch directly. The charge running through the circuit always passes through an appliance, which acts as a resistor. In this way, the electrical resistance in appliances limits how much charge can flow through a circuit (with a constant vol ...
Electrical Safety
... If an electrical appliance or tool falls into a sink or tub of water, the item will short and trip the circuit breaker This may not happen because the sink or tub may be non-conductive and therefore not part of the loop to ground ...
... If an electrical appliance or tool falls into a sink or tub of water, the item will short and trip the circuit breaker This may not happen because the sink or tub may be non-conductive and therefore not part of the loop to ground ...
MAX4080/MAX4081 76V, High-Side, Current-Sense Amplifiers with Voltage Output General Description
... need for a separate polarity output. The MAX4081 requires an external reference to set the zero-current output level (VSENSE = 0V). The charging current is represented by an output voltage from VREF to VCC, while discharge current is given from VREF to GND. For maximum versatility, the 76V input vol ...
... need for a separate polarity output. The MAX4081 requires an external reference to set the zero-current output level (VSENSE = 0V). The charging current is represented by an output voltage from VREF to VCC, while discharge current is given from VREF to GND. For maximum versatility, the 76V input vol ...
Chapter 33
... 1. (a) Why does a capacitor act as a short circuit at high frequencies? (b) Why does a capacitor act as an open circuit at low frequencies? 2. (a) Explain how the mnemonic “ELI the ICE man” can be used to recall whether current leads voltage or voltage leads current in RLC circuits. Note that E repr ...
... 1. (a) Why does a capacitor act as a short circuit at high frequencies? (b) Why does a capacitor act as an open circuit at low frequencies? 2. (a) Explain how the mnemonic “ELI the ICE man” can be used to recall whether current leads voltage or voltage leads current in RLC circuits. Note that E repr ...
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.