clamping pulses

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• Clamp, clamping — A&V The circuit or process that restores the dc component of a signal. A video clamp circuit, usually triggered by horizontal synchronizing pulses, re establishes a fixed dc reference level for the video signal. Some clamp circuits clamp sync tip …   Audio and video glossary

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• Optical amplifier — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… …   Wikipedia