Alternating Current - An alternating current (AC) is an electrical current where the magnitude and direction of the current varies cyclically, as opposed to direct current, where the direction of the current stays constan. Used PA-5. t. The usual waveform of an AC power circuit is a sine wave, as this results in the most efficient transmission of energy. However in certain applications different waveforms are used, su. Used PA-5. ch as triangular or square waves.
Used generically, AC refers to the form in which electricity is delivered to businesses and residences. However, audio and radio signals carried on electrical wire ar
Headsets and Beltpacks - Headsets are simply headphones with an attached mic, usually a noise canceling condenser mic, used for communicating with other crew members during a show or production. Beltpacks provide power to the. Used PA-5. headset and allow it to be used remotely. . Used PA-5. ...
Audio - Audio is the science and art of recording or reproducing sound through mechanical or electronic means. The field includes many disciplines, such as electrical engineering, acoustics, and music with de. Used PA-5. sign, installation and operation of sound recording and reproduction equipment as the focus. . Used PA-5. ...
Analog to Digital Converter - In electronics, an analog-to-digital converter (abbreviated ADC, A/D, or A to D) is a device that converts continuous signals to discrete digital numbers. Typically, an ADC converts a voltage to a di. Used PA-5. gital number. The digital to analog converter or DAC performs the reverse operation. . Used PA-5.
Active - A active circuit works with an external power supply and usually at low power. A passive circuit operates directly on a signal using the power coming from the surrounding circuitry.
This is the . Used PA-5. reason why an active crossover is, for the most part, placed before amps, containing integrated circuits (and line level signal processing). On the other hand a passive crossover is pla. Used PA-5. ced after amplifiers where power levels are much larger . ...