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Chopper stabilized dc amplifiers are complex amplifiers having ________ amplifiers incorporated in the module.

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Chopper stabilized dc amplifiers are complex amplifiers having ________ amplifiers incorporated in the module.

(a) 1

(b) 2

(c) 3

(d) 4

The question was posed to me by my college director while I was bunking the class.

My doubt stems from Preamplifiers in portion Recording System of Biomedical Instrumentation

1 Answer

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The correct answer is (c) 3

Explanation: Chopper stabilized dc amplifiers are used for low level but preferably wideband applications such as oscilloscopes, tape recorders and light beam oscilloscope recorders. These are complex amplifiers having three amplifiers incorporated in the module. This includes an ac amplifier for signals above about 20 Hz, a dc chopper input amplifier for signals from about 20 Hz down to dc plus wideband feedback stabilized dc amplifier.

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