arator is restricted to the O-to-6 volt range supplied by a dc amplifier (see “Integrated Low-Level DC Differential Amplifier,” Chapter 3). The ladder adder in the circuit is a predsion voltage divider supplied by a highly regulated voltage source and programed by transistor switches. It can… … Figube 54. — A/B converter for me in reentry telemetry system. The comparator is a difference amplifier. Its primary function is to determine if the voltage supplied by the ladder adder is greater than an unknown voltage representing analog data from the dc ampli¬ fier. If the ladder-adder voltage…
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