T6 Questions - Department of Electrical, Computer, and Energy
... What component is commonly used to change 120V AC house current to a lower AC voltage for other uses? ...
... What component is commonly used to change 120V AC house current to a lower AC voltage for other uses? ...
Logic Circuits
... such as quantities in mathematics? Here we create an analogy between something that can be stored and measured in an electrical/mechanical device and a mathematical value. For example, we can assign an equivalence between mathematical value and electrical charge. The extent to which we can operate o ...
... such as quantities in mathematics? Here we create an analogy between something that can be stored and measured in an electrical/mechanical device and a mathematical value. For example, we can assign an equivalence between mathematical value and electrical charge. The extent to which we can operate o ...
“When in Doubt, Lock it out!”
... • Never assume a system or component is de-energized – verify absence of voltage with an approved testing device ...
... • Never assume a system or component is de-energized – verify absence of voltage with an approved testing device ...
Optimal Single Resistor Damping of Input Filters
... blocking capacitor Cd of the R-Cd damping network. For this reason, R-Ld damping is often the preferred approach in highdensity dc-dc converters. When it is necessary to damp the input filter of a low-harmonic rectifier, R-Ld damping is also preferred; this avoids the rectifier peak detection induce ...
... blocking capacitor Cd of the R-Cd damping network. For this reason, R-Ld damping is often the preferred approach in highdensity dc-dc converters. When it is necessary to damp the input filter of a low-harmonic rectifier, R-Ld damping is also preferred; this avoids the rectifier peak detection induce ...
X01414271431
... high accuracy attainable. However, filters implemented in this technology tend to consume significant power and achieve processing speeds below those attainable using analog implementations. Thus, for low-cost, high-speed applications designers tend to favor analog filters. However, these filters su ...
... high accuracy attainable. However, filters implemented in this technology tend to consume significant power and achieve processing speeds below those attainable using analog implementations. Thus, for low-cost, high-speed applications designers tend to favor analog filters. However, these filters su ...
Automating the Screening of Microphonic Defects in Automotive
... quality department for operator training. For repeatability between samples, it was necessary to standardize their volume control settings prior to commencing the microphonic test. With a reference RF signal (f = 98 MHz, E’ = 40 dBuV, m = 22.5 kHz FM and AF = 1 kHz) connected to the radio’s aerial i ...
... quality department for operator training. For repeatability between samples, it was necessary to standardize their volume control settings prior to commencing the microphonic test. With a reference RF signal (f = 98 MHz, E’ = 40 dBuV, m = 22.5 kHz FM and AF = 1 kHz) connected to the radio’s aerial i ...
A CMOS Temperature-to-Frequency Converter With an Inaccuracy
... as the frequency-determining component of a feedback or relaxation oscillator [6]–[8], [13]. The frequency of the resulting electrothermal oscillator will then be a well-defined function of temperature, i.e., the oscillator is a temperature-to-frequency converter (TFC). Compared to an electrical osc ...
... as the frequency-determining component of a feedback or relaxation oscillator [6]–[8], [13]. The frequency of the resulting electrothermal oscillator will then be a well-defined function of temperature, i.e., the oscillator is a temperature-to-frequency converter (TFC). Compared to an electrical osc ...
Spectrum Analysers
... Terminology, resolution bandwidth The Resolution Band-Width filter or RBW filter is the bandpass filter in the IF path. It is the bandwidth of the RF ‘route’ before the detector (power measurement device). This filter determines the RF noise floor and how close two signals can be and still be resol ...
... Terminology, resolution bandwidth The Resolution Band-Width filter or RBW filter is the bandpass filter in the IF path. It is the bandwidth of the RF ‘route’ before the detector (power measurement device). This filter determines the RF noise floor and how close two signals can be and still be resol ...
FM Stereo Tuner by L Nelson-Jones - Keith
... The reference used when a.f.c. is not required is derived from a potentiometer across the supply. The values chosen give a voltage close to that obtained at pin 14 of [C2 (when there is either no signal or the signal is at centre frequency). The output level at pin 14 of [C2 stays fairly close to ar ...
... The reference used when a.f.c. is not required is derived from a potentiometer across the supply. The values chosen give a voltage close to that obtained at pin 14 of [C2 (when there is either no signal or the signal is at centre frequency). The output level at pin 14 of [C2 stays fairly close to ar ...
Theory 10: Measurement of Vibration
... RMS (Root Mean Square) Level: Provides the most useful description of vibration levels. The square root of the integrated time-averaged squared function is related to the vibration energy and hence the vibration's damage potential. The RMS value of a sine wave is 1/2 times the value of the peak lev ...
... RMS (Root Mean Square) Level: Provides the most useful description of vibration levels. The square root of the integrated time-averaged squared function is related to the vibration energy and hence the vibration's damage potential. The RMS value of a sine wave is 1/2 times the value of the peak lev ...
Circuit Symbols of Electronic Components
... and step down (decrease) AC voltages. Energy is transferred between the coils by the magnetic field in the core. There is no electrical connection between the coils. ...
... and step down (decrease) AC voltages. Energy is transferred between the coils by the magnetic field in the core. There is no electrical connection between the coils. ...
A.C. Chow and D.J. Perreault, “Active EMI Filters for Automotive Motor Drives,” 2002 IEEE Workshop on Power Electronics in Transportation , Auburn Hills, MI, October 2002, pp. 127-134.
... ulse-width modulated (PWM) motor drives are becoming widely used in automotive applications due to their high performance and efficiency. One drawback of such drives is that they generate ripple. Stringent EMI specifications limit the maximum amount of ripple allowed. Therefore, PWM converters requi ...
... ulse-width modulated (PWM) motor drives are becoming widely used in automotive applications due to their high performance and efficiency. One drawback of such drives is that they generate ripple. Stringent EMI specifications limit the maximum amount of ripple allowed. Therefore, PWM converters requi ...
Aalborg Universitet
... which ensuring a smaller physical size. An LLCL -based gridconnected converter has almost the same frequency-response characteristic as that with the traditional LCL-filter within half of the switching frequency range. The resonance frequencies of the LLCL-filters based grid-connected converters are ...
... which ensuring a smaller physical size. An LLCL -based gridconnected converter has almost the same frequency-response characteristic as that with the traditional LCL-filter within half of the switching frequency range. The resonance frequencies of the LLCL-filters based grid-connected converters are ...
Schematic Diagrams - Oregon State EECS
... A schematic diagram is a concise, symbolic description of an electrical circuit. It specifies the elements that make up an electrical circuit and how they are connected. Schematic diagrams form one of the basic languages of electrical engineering. On a schematic, there may be many parts which are id ...
... A schematic diagram is a concise, symbolic description of an electrical circuit. It specifies the elements that make up an electrical circuit and how they are connected. Schematic diagrams form one of the basic languages of electrical engineering. On a schematic, there may be many parts which are id ...
Design of AC Filter for HVDC Transmission Project
... Filter tuning point is proposed to be DT11/24、DT13/36, which is different from the double tuned filter type configuration(DT11/13、DT24/36) in the early DC projects. The largest characteristic harmonics (11 th, 13th) can be filtered out separately. Besides, the stress of filter elements and the effec ...
... Filter tuning point is proposed to be DT11/24、DT13/36, which is different from the double tuned filter type configuration(DT11/13、DT24/36) in the early DC projects. The largest characteristic harmonics (11 th, 13th) can be filtered out separately. Besides, the stress of filter elements and the effec ...
Unit 2 Signals
... Sometimes a filter is assumed to be ideal for the sake of simplifying the analysis of a system. The ideal low-pass filter for example, passes all frequencies up to its cut-off frequency and completely rejects all frequencies above this frequency. ...
... Sometimes a filter is assumed to be ideal for the sake of simplifying the analysis of a system. The ideal low-pass filter for example, passes all frequencies up to its cut-off frequency and completely rejects all frequencies above this frequency. ...
Mechanical filter
A mechanical filter is a signal processing filter usually used in place of an electronic filter at radio frequencies. Its purpose is the same as that of a normal electronic filter: to pass a range of signal frequencies, but to block others. The filter acts on mechanical vibrations which are the analogue of the electrical signal. At the input and output of the filter, transducers convert the electrical signal into, and then back from, these mechanical vibrations.The components of a mechanical filter are all directly analogous to the various elements found in electrical circuits. The mechanical elements obey mathematical functions which are identical to their corresponding electrical elements. This makes it possible to apply electrical network analysis and filter design methods to mechanical filters. Electrical theory has developed a large library of mathematical forms that produce useful filter frequency responses and the mechanical filter designer is able to make direct use of these. It is only necessary to set the mechanical components to appropriate values to produce a filter with an identical response to the electrical counterpart.Steel and nickel–iron alloys are common materials for mechanical filter components; nickel is sometimes used for the input and output couplings. Resonators in the filter made from these materials need to be machined to precisely adjust their resonance frequency before final assembly.While the meaning of mechanical filter in this article is one that is used in an electromechanical role, it is possible to use a mechanical design to filter mechanical vibrations or sound waves (which are also essentially mechanical) directly. For example, filtering of audio frequency response in the design of loudspeaker cabinets can be achieved with mechanical components. In the electrical application, in addition to mechanical components which correspond to their electrical counterparts, transducers are needed to convert between the mechanical and electrical domains. A representative selection of the wide variety of component forms and topologies for mechanical filters are presented in this article.The theory of mechanical filters was first applied to improving the mechanical parts of phonographs in the 1920s. By the 1950s mechanical filters were being manufactured as self-contained components for applications in radio transmitters and high-end receivers. The high ""quality factor"", Q, that mechanical resonators can attain, far higher than that of an all-electrical LC circuit, made possible the construction of mechanical filters with excellent selectivity. Good selectivity, being important in radio receivers, made such filters highly attractive. Contemporary researchers are working on microelectromechanical filters, the mechanical devices corresponding to electronic integrated circuits.