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NIR-10 - scootworks
NIR-10 - scootworks

... frequencies of white noise and similar noise types. This provides a second means of noise reduction for the user. With CW signals, if a CW tone can be separated with the receiver filter, it can be further peaked and noise-reduced using the PEAK function. The PEAK mode is made operational in either B ...
Grounding and Bonding
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L14-sb-SDS-STATE
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... is built; starting with basic elements as building blocks. • Why study hardware design? • Understand capabilities and limitations of hardware in general and processors in particular. • What processors can do fast and what they can’t do fast (avoid slow things if you want your code to run fast!) • Ba ...
Speaker Re-foaming (Surround Replacement)
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... coil correctly aligned in the gap—the optimal area in the permanent magnetic field where the coil is designed to sit. The most common reason to replace the speaker surround is damage. If a speaker surround is partially torn it may provide inadequate or asymmetric spring force, which can cause dimini ...
MIDI Resource SystemTM
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Display Message on Notice Board using GSM
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... Single Ended to Differential Input Stage Figure 1 shows the basic setup for a Single-Ended (SE) to Differential (Diff) input stage used with the TPA32xx amplifier. In this use case, the amplifier is configured for BTL output and requires “Input_A” and “Input_B” to be driven differentially. A pair of ...
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Avoid generating capacity losses in aging hydropower plants
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45EMD Portable Calibrator
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... levels with an X10 to provide 0001 to 9999 mV or pC at the two separate output jacks. The battery used provides more than 6 hours of operation before recharge is needed. The 45EMD Portable Calibrator is a straight forward instrument with selfexplanatory controls. The operation of each control is giv ...
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Public address system



A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium. The term is also used for systems which may additionally have a mixing console, and amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person giving a speech or distributing the sound throughout a venue or building.Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements.Sound reinforcement systems and PA systems may use some similar components, but with differing application, although the distinction between the two is not clear-cut. Sound reinforcement systems are for live music or performance, whereas PA systems are primarily for reproduction of speech. In Britain any PA system is sometimes colloquially referred to as a Tannoy, after the company of that name now owned by TC Electronic Group, which supplied a great many of the PA systems used previously in Britain.
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