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Characterization of Acoustic Transients: Calibration and
Characterization of Acoustic Transients: Calibration and

... used, and microphone used. There is also some variation across individual transducers within a specific type of transducer. 5. Thus, to convert from b-p peSPL to p-p peSPL, or vice versa, one must have conversion values for all transducers used for AEP clinical efforts, and for all couplers (and pos ...
4-Channel Video Amplifier with 1-SD and 3-HD Sixth
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ISL8483E/85E
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... 3. Supply current specification is valid for loaded drivers when DE = 0V. 4. Applies to peak current. See “Typical Performance Curves” on page 10 for more information. 5. When testing the ISL8483E, keep RE = 0 to prevent the device from entering SHDN. 6. When testing the ISL8483E, the RE signal high ...
Suppression of transients across the tap windings of an auto
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BDTIC www.BDTIC.com/infineon Resonant LLC Converter: Operation and Design 250W 33Vin 400Vout Design Example
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AD628 High Common-Mode Voltage, Programmable Gain
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... low current, a MOSFET is usually the best choice (or you could use a smaller size PT IGBT). At high current, an IGBT is the best choice because conduction loss increases very modestly with increasing current, whereas the conduction loss of a power MOSFET is proportional to the current squared. At mo ...
TLN-712 User Guide 2.0 - The Tellun Corporation
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Transferring energy to a track bound vehicle
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... current in the line or lines of the segment has several advantages compared to the operation of the segment at constant voltage. One advantage is that the constant current may be a sinus function of time. This means that only a single frequency of electromagnetic waves is produced. Operating the seg ...
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... analog signal, or to interface the AD545 to a transformer by using switches SW2, SW3, SW4, and SW5. Putting the switches in the TXFM position connects the input and output of the AD545 to the transformer. If the switches are left in the input or output position, they allow the user to apply an analo ...
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... The ADuC832 is operated in single variable resolution PWM (Mode 1), in this mode the pulse length and the cycle time (period) are programmable in user code, allowing the resolution of the PWM to be variable. PWM1H/L sets the period of the output waveform. Reducing PWM1H/L reduces the resolution of t ...
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SC190 - Semtech

... The device has a thermal shutdown feature to protect the device if the junction temperature exceeds 150°C. In thermal shutdown the PWM drive is disabled tri-stating the LX output and the front-end LDO is disabled. The device will not be enabled again until the temperature reduces by 10°C. If during ...
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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.
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