Video Amplifier Block Diagram. The circuit has been tested at 4 7 mhz this low level stage requires a single 5v dc supply. The figure below shows the block diagram of an amplifier.

Sonifex Rb Vhda8 3g Hd Sd Sdi 1 Input 8 Output Video Distribution Amplifier
Sonifex Rb Vhda8 3g Hd Sd Sdi 1 Input 8 Output Video Distribution Amplifier from www.sonifex.co.uk

A video amplifier is fundamentally an rc coupled amplifier that uses high gain transistors. It offers fixed gains of 100 and 400 without external components and adjustable gains from 400 to 0 with one external resistor. The circuitry involved inside the amplifier raises the amplitude of the signal up to the desired level and then further transmits it to the receiver.

Block diagram of amplifier.

The advantage of fixed gain is that the amplifier can be more easily designed to meet the requirements of stability and b w. It offers fixed gains of 100 and 400 without external components and adjustable gains from 400 to 0 with one external resistor. Ezed channel 23 701 views. The circuit has been tested at 4 7 mhz this low level stage requires a single 5v dc supply.