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Bolometer Power Meter
CALORIMETERS

Neets Module 21-Test Methods and Practices
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3-20 Figure 3-17.—Power meter. Basically, the power meter circuit consists of two bridges; each bridge includes one of the thermistor elements as a bridge arm. The bridges are made self-balancing through the use of feedback loops. Positive or regenerative feedback is used in feedback loop 1; degenerative (negative) feedback is used in feedback






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