Question

Which of the following amplifier is commonly used for providing protection against leakage currents?

(a) Isolation amplifiers

(b) Instrumentational amplifiers

(c) Inverting amplifiers

(d) Differential amplifiers

The question was posed to me in unit test.

This key question is from Single Channel Telemetry System topic in division Biomedical Telemetry of Biomedical Instrumentation

Answer 1

Right option is (a) Isolation amplifiers

For explanation I would say: Isolation amplifiers are commonly used for providing protection against leakage currents. They break the ohmic continuity of electric signals between the input and output of the amplifier. The isolation includes different supply voltage sources and different grounds on each side of the isolation barrier.