________________is employed with resistive transducers which require an external source of excitation?(a) dc bridge amplifier(b) ac coupled amplifier(c) carrier amplifier(d) differential amplifierI got this question in exam.This key question is from Single Channel Telemetry System topic in portion Biomedical Telemetry of Biomedical Instrumentation

________________is employed with resistive transducers which require a

1.	________________is employed with resistive transducers which require an external source of excitation?(a) dc bridge amplifier(b) ac coupled amplifier(c) carrier amplifier(d) differential amplifierI got this question in exam.This key question is from Single Channel Telemetry System topic in portion Biomedical Telemetry of Biomedical Instrumentation
Answer» The correct answer is (a) dc BRIDGE amplifier For explanation: Essentially, the amplifier comprises a stable dc EXCITATION source, a bridge balance and calibration unit, a high gain differential dc amplifier and a dc OUTPUT amplifier.DC bridge amplifiers are employed with resistive TRANSDUCERS which require an external source of excitation. They can be used as conventional dc high gain amplifiers and offer operating simplicity and high FREQUENCY response.

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