Question

A vertical amplifier for a CRO can be designed for _____.
1. High gain
2. Different gain
3. Low gain
4. Constant gain

Answer 1

Correct Answer - Option 4 : Constant gain

Explanation:

• The vertical amplifier is the principal factor in determining the sensitivity and bandwidth of an oscilloscope.
• An amplifier at some cost may be obtained with a certain gain-bandwidth product which is the product of the voltage gain of the amplifier and bandwidth.
• Voltage gain may be sacrificed in favor of greater bandwidth or vice versa without significantly affecting the cost of the amplifier.
• If the gain-bandwidth product increases, the cost of the amplifier will increase.
• So, the gain-bandwidth product should be constant for the effective cost of the amplifier.
• The vertical amplifier able to reproduce faithfully low-amplitude, high-frequency signals with fast rise times.