| 摘要 |
A system is disclosed in which a source and detector of radiation are positioned to sense a physical property, the detector generating electrical pulses proportional to the energy of the source impinging thereupon. The circuitry of the system amplifies and shapes the pulses, converts them into an analog D.C. signal with A.C. components proportional to the frequency of the pulses, and amplifies the D.C. through A.C. and operational amplifiers to cancel the A.C. component and produce a pure analog D.C. output signal.
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