About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 67. Chapters: Twisted pair, Virtual circuit, Costas loop, Phase-locked loop, Demodulation, Interchange circuit, Common-mode interference, Carrier wave, Communications-electronics, Four-wire circuit, Reference noise, Loading coil, Transponder, Frequency frogging, Phantom circuit, Simplex circuit, Private line, Long-haul communications, Interposition trunk, Ringdown, Balanced line, Filtered symmetric differential phase-shift keying, Toll switching trunk, Automatic sounding, Circuit restoration, Facsimile converter, Multiple homing, Conditioning equipment, Loopback, Frequency synthesizer, Moscow-Washington hotline, Variable-frequency oscillator, Echo cancellation, Current loop, Balanced circuit, Duplex, Leased line, Differential signaling, International telecommunications routes, Frequency multiplier, Trunking, Carrier recovery, Frequency mixer, Luftwaffe radio equipment of World War II, Dual-modulus prescaler, Transposition, Envelope detector, Orthomode transducer, Via Net Loss, Product detector, ADSL loop extender, Link, Echo suppressor, Beat frequency oscillator, Multi-link trunking, Loop around, Foster-Seeley discriminator, Simplex communication, Coupling, Single-ended signalling, Two-wire circuit, Return channel, Automatic frequency control, Frequency drift, Quad Digital Audio Processor, Fax demodulator, Foreign exchange service, Milliwatt test, Subharmonic mixer, High Speed Voice and Data Link, Low IF receiver, Tie line, Dedicated line, Long line, Channel bank, Point of appearance, Off Premise Extension, Channelized. Excerpt: A phase-locked loop or phase lock loop (PLL) is a control system that tries to generate an output signal whose phase is related to the phase of the input "reference" signal. It is an electronic circuit consisting of a variable frequency oscillator and a phase detector. This circuit compares the phase of t...
