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31. The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.
32. Amplifiers for photoconductive, photodiode and photovoltaic cells are shown in Figures 14, 15,16 respectively.
33. Data - collection card and photodiode - monitoring circuit are the main components of the fault inspection system.
34. Here, we study three topics: the silicon light emission, the silicon photodiode, the transimpedance and limiting amplifiers.
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35. The simulation results show that the optical coupling efficiency is determined by fiber position, the lens design of the photodiode chips, and the shape of the light source.
36. Siemens' MR-PET prototype is dedicated to the brain and the PET scanner uses a next-generation Avalanche Photodiode Detector (APD) technology.
37. The emphasis is laid on the influence of the parameters of the active devices(PIN photodiode, MESFET) on the circuit noise, transmission bandwidth and reception sensitivity of the preamplifier.
38. The complete model and graphic method make the analysis and calculation of the photodiode detectors very convenient, and have extensive sense.
39. APC uses the photodiode inside LD and compares its testing current with setting value to form a closed loop negative feedback.
40. A overview of the basic structure, operating principle and properties for a new single-photon photo-detector, called vacuum avalanche photodiode (VAPD), is presented too.
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