Velocity-dependent microphones
... wireless microphones (including impedances and output voltages) ...
... wireless microphones (including impedances and output voltages) ...
UCC3884 数据资料 dataSheet 下载
... An accurate programmable volt-second technique clamps the duty cycle. The duty cycle limit is inversely proportional to input voltage and a resistor divider network is used to program the proportionality constant. At a given input voltage and constant load, under closed loop control, the operating d ...
... An accurate programmable volt-second technique clamps the duty cycle. The duty cycle limit is inversely proportional to input voltage and a resistor divider network is used to program the proportionality constant. At a given input voltage and constant load, under closed loop control, the operating d ...
BDTIC TDA 7255V ASK/FSK single-channel Transceiver for the
... More and more consumer products are shrinking and engineers are working hard to reduce PCB area and costs wherever possible. ...
... More and more consumer products are shrinking and engineers are working hard to reduce PCB area and costs wherever possible. ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... however, does not take into account internal noise, which may be of concern in the high-Q stages, where any noise component falling under the resonance peak may be amplified significantly. So, to minimize noise, high-Q stages should go first in the cascade. In general, the optimum ordering depends o ...
... however, does not take into account internal noise, which may be of concern in the high-Q stages, where any noise component falling under the resonance peak may be amplified significantly. So, to minimize noise, high-Q stages should go first in the cascade. In general, the optimum ordering depends o ...
t..... _ Rhapsodx Sound Engineering Training Syllabus PART ONE
... most basic sound reinforcement system possible, consisting simply of two transducers and an amplifier. The term transducer refers to any device which changes one kind of energy to another. A microphone will change sound waves (acoustical energy) into an equivalent audio signal (electrical energy); a ...
... most basic sound reinforcement system possible, consisting simply of two transducers and an amplifier. The term transducer refers to any device which changes one kind of energy to another. A microphone will change sound waves (acoustical energy) into an equivalent audio signal (electrical energy); a ...
balanced modulator
... Low-Level AM: PIN Diode Modulator Variable attenuator circuits using PIN diodes produce AM at VHF, UHF, and microwave frequencies. PIN diodes are special type silicon junction diodes designed for use at frequencies above 100 MHz. When PIN diodes are forward-biased, they operate as variable res ...
... Low-Level AM: PIN Diode Modulator Variable attenuator circuits using PIN diodes produce AM at VHF, UHF, and microwave frequencies. PIN diodes are special type silicon junction diodes designed for use at frequencies above 100 MHz. When PIN diodes are forward-biased, they operate as variable res ...
New Interpretation of Resonance - International Journal of Pure and
... In the simplest case, when continuous sinusoidal oscillations constantly affect the electric circuit from the outside, the term “resonance frequency” is used instead of the above-mentioned “zeroes” and “poles” and processes taking place at these frequencies are referred to, respectively, as resonanc ...
... In the simplest case, when continuous sinusoidal oscillations constantly affect the electric circuit from the outside, the term “resonance frequency” is used instead of the above-mentioned “zeroes” and “poles” and processes taking place at these frequencies are referred to, respectively, as resonanc ...
WMS 450 Wireless Microphone System
... The AKG WMS 450 is your best choice for any application calling for a solution that is more flexible than a simple plug-and-play system yet easy to set up and operate. The WMS 450 provides cost-efficient, high-performance solutions for situations where several radio mics will be used simultaneously, ...
... The AKG WMS 450 is your best choice for any application calling for a solution that is more flexible than a simple plug-and-play system yet easy to set up and operate. The WMS 450 provides cost-efficient, high-performance solutions for situations where several radio mics will be used simultaneously, ...
Experiment 1: Index of refraction
... As with resistors, the nominal capacitance of a capacitor is often quite different from its actual capacitance. We can use the result in equation 4 to measure the capacitance of an unknown capacitor. First, set your DMM to the 20 volt DC range and measure its internal resistance as in the previous l ...
... As with resistors, the nominal capacitance of a capacitor is often quite different from its actual capacitance. We can use the result in equation 4 to measure the capacitance of an unknown capacitor. First, set your DMM to the 20 volt DC range and measure its internal resistance as in the previous l ...
Photoelectrics Amplifier Type S142A..
... Specifications are subject to change without notice (01.10.2015) ...
... Specifications are subject to change without notice (01.10.2015) ...
PHOTOELECTRIC BEAM SENSOR
... photoelectric beam is designed to meet the highest standards of quality and reliability for photoelectric beam intrusion detection. Unique twin beams are synchronized to work together to reinforce the range and stability in severe weather conditions. The system has a rotary optical system for easy i ...
... photoelectric beam is designed to meet the highest standards of quality and reliability for photoelectric beam intrusion detection. Unique twin beams are synchronized to work together to reinforce the range and stability in severe weather conditions. The system has a rotary optical system for easy i ...
Introduction to DSP
... • It processes input signal digitally. • In a simple language processing of input signal means modifying the signal as per requirement. • It consists of lowpass, highpass, and bandpass digital filtering, or other algorithms for different applications. • DS processor is a special type of digital com ...
... • It processes input signal digitally. • In a simple language processing of input signal means modifying the signal as per requirement. • It consists of lowpass, highpass, and bandpass digital filtering, or other algorithms for different applications. • DS processor is a special type of digital com ...
application note uc3842/3/4/5 provides low-cost current
... where current-mode control has eliminated the inductor pole. Large-signal dynamic response is then greatly improved due to the absence of Ci. Current limiting is greatly simplified with current-mode control. Pulse-by-pulse limiting is, of course, inherent in the control scheme. Furthermore, an upper ...
... where current-mode control has eliminated the inductor pole. Large-signal dynamic response is then greatly improved due to the absence of Ci. Current limiting is greatly simplified with current-mode control. Pulse-by-pulse limiting is, of course, inherent in the control scheme. Furthermore, an upper ...
TR41.9.2-03-05-017-ADSLSignalPower
... conditioned to transmit at its highest signal power level and line rate without a sustained connection to companion equipment. The method of testing with a companion device is impractical for ADSL equipment since the companion (ATU-C) equipment may present excessively high signal levels at frequenci ...
... conditioned to transmit at its highest signal power level and line rate without a sustained connection to companion equipment. The method of testing with a companion device is impractical for ADSL equipment since the companion (ATU-C) equipment may present excessively high signal levels at frequenci ...
SiGe W-CDMA Transmitter for Mobile Terminal Application , Member, IEEE Victoria Pereira
... generate 90 out-of-phase quadrature IF carrier (380-MHz) signals. Asymmetrical latches are used to construct a very lownoise-floor (i.e., 160 dBm/Hz) divide-by-four, as shown in Fig. 4. Since the divide-by-four has a feedback path and asymmetrical current latches, this aids in increasing driving lev ...
... generate 90 out-of-phase quadrature IF carrier (380-MHz) signals. Asymmetrical latches are used to construct a very lownoise-floor (i.e., 160 dBm/Hz) divide-by-four, as shown in Fig. 4. Since the divide-by-four has a feedback path and asymmetrical current latches, this aids in increasing driving lev ...
ELEC 360: Signals and Systems - Department of Engineering and
... Line Spectra of x(t) in the Exponential Form • The line spectra for the exponential form has negative frequencies because of the mathematical nature of the complex exponent. x(t ) ... | D 2 | e j 2 e j 20t | D1 | e j1 e j0t D0 | D1 | e j1 e j0t | D2 | e j 2 e j 20t .. ...
... Line Spectra of x(t) in the Exponential Form • The line spectra for the exponential form has negative frequencies because of the mathematical nature of the complex exponent. x(t ) ... | D 2 | e j 2 e j 20t | D1 | e j1 e j0t D0 | D1 | e j1 e j0t | D2 | e j 2 e j 20t .. ...
Radar (Radio Detection And Ranging) Principle
... H(f) = frequency-response function of IF amplifier (filter) fo = frequency of the maximum response (usually at midband) Noise bandwidth is the bandwidth of the equivalent rectangular filter with the same noise power output with the one with H(f) Half-Power Bandwidth: separation between two points wi ...
... H(f) = frequency-response function of IF amplifier (filter) fo = frequency of the maximum response (usually at midband) Noise bandwidth is the bandwidth of the equivalent rectangular filter with the same noise power output with the one with H(f) Half-Power Bandwidth: separation between two points wi ...
Wavelet and Mathematical Morophology as the De
... distorted by noise sources. This greatly reduces the ability to identify PD sources in HV transformer windings. Therefore, denoising methods in PD analysis are very important. In recent years, several noise reduction techniques have been proposed for application in PD analysis. The common tyypes of ...
... distorted by noise sources. This greatly reduces the ability to identify PD sources in HV transformer windings. Therefore, denoising methods in PD analysis are very important. In recent years, several noise reduction techniques have been proposed for application in PD analysis. The common tyypes of ...
Wireless Optical MIDI Data Transfer
... In order to accomplish our goal of eliminating the need for a bench voltage supply, it was necessary to find a way to supply the voltage from a simple wall outlet. To do this, different methods were used for the receiver and sender circuits. For the sender circuit, an AC adapter that supplied a 12 V ...
... In order to accomplish our goal of eliminating the need for a bench voltage supply, it was necessary to find a way to supply the voltage from a simple wall outlet. To do this, different methods were used for the receiver and sender circuits. For the sender circuit, an AC adapter that supplied a 12 V ...
the self-bias pll in standard cmos
... aimed to generate clock for integrated power meter. The chip is supposed to have reference oscillator of 32.768 kHz and PLL should generate fixed output frequency of 4.19 MHz. Therefore the tracking bandwidth property of PLL is not important. Since PLL must be integrated on-chip, the main problem fo ...
... aimed to generate clock for integrated power meter. The chip is supposed to have reference oscillator of 32.768 kHz and PLL should generate fixed output frequency of 4.19 MHz. Therefore the tracking bandwidth property of PLL is not important. Since PLL must be integrated on-chip, the main problem fo ...
Heterodyne
Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.