Question
Download Solution PDFA buffer is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Buffer:
- A Buffer is an op-amp circuit whose output voltage straight away follows the input voltage. i.e. output voltage equivalent to the input voltage.
- The Op-amp circuit does not provide any amplification thus, its voltage gain is unity.
- The voltage follower is used as a buffer amplifier, isolation amplifier, unity gain amplifier as the output follows the input.
- The voltage follower provides no alternation or amplification but only buffering.
Non-Inverting Buffer:
1. The buffer is a single-input device that has a gain of 1and provides the input at the output.
2. It has value for impedance matching and for isolation of the input and output.
Inverting Buffer:
1. The inverting buffer is a single-input device that produces the state opposite the input.
2. If the input is high, the output is low and vice versa.
Hence option (2) is the correct answer.
Characteristics:
- High input impedance
- Low output impedance
- Current Gain & power gain high
- Voltage gain unity
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