Howtosignalprocessing
The function of a video amplifier is to amplify a signal containing high-frequency components without introducing distortion.
- What is the basic function of an amplifier?
- What is log video amplifier?
- What is the importance of voltage amplifier?
- How does an isolation amplifier work?
What is the basic function of an amplifier?
An amplifier is an electronic device that increases the voltage, current, or power of a signal. Amplifiers are used in wireless communications and broadcasting, and in audio equipment of all kinds.
What is log video amplifier?
It is used to measure signals that are of high frequency and those that widely vary. It is used when rapid and precise tracking across the entire frequency band is required. In radar and EW systems, the amplifiers are used for finding direction and monitoring power.
What is the importance of voltage amplifier?
The purpose of a voltage amplifier is to make the amplitude of the output voltage waveform greater than that of the input voltage waveform (although the amplitude of the output current may be greater or smaller than that of the input current, this change is less important for the amplifier´s designed purpose).
How does an isolation amplifier work?
The isolation amplifier contains a voltage-to-frequency converter connected through a transformer to a frequency-to-voltage converter. The isolation between input and output is provided by the insulation on the transformer windings. An optically isolated amplifier modulates current through an LED optocoupler.
