Electronics (Mike Jaroch)
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FORWARD AGCThe type of AGC that causes an amplifier to be driven towards saturation [17]. | ||
FORWARD BIASAn external voltage that is applied to a PN junction in the conducting direction so that the junction offers only minimum resistance to the flow of current. Conduction is accomplished by majority current carriers (holes in P-type material; electrons in N-type material) [7] [13] [14]. | ||
FORWARD RESISTANCEThe smaller resistance value observed when you are checking the resistance of a semiconductor [16]. | ||
FOSTER-SEELEY DISCRIMINATORA circuit that uses a double-tuned RF transformer to convert frequency variations in the received FM signal to amplitude variations. Also known as a phase-shift discriminator [12]. | ||
FOUR-ELEMENT ARRAYAn antenna array with three parasitic elements and one driven element [10]. | ||
FRAMINGThe process of synchronizing a facsimile receiver to a transmitter. This allows proper picture reproduction [17]. | ||
FREE CHARGESThose electrons that can be moved by an externally applied voltage [7]. | ||
FREE-SPACE LOSSThe loss of energy of radio waves caused by the spreading of the wavefront as it travels from the transmitter [10]. | ||
FREQUENCY(1) The number of complete cycles per second existing in any form of wave motion, such as the number of cycles per second of an alternating current [2] [10]. (2) The rate at which the vector that generates a sine wave rotates [12]. | ||