Limiting amplifier for PSD photoelectric signal

A photoelectric signal and amplifier technology, applied in the field of amplification, can solve the problems of complex signal acquisition and amplification circuit, and achieve obvious novelty and practicability, excellent amplification performance, and good signal detection effect.

Inactive Publication Date: 2004-06-09
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this kind of signal acquisition and amplification circuit is usually more complicated.

Method used

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  • Limiting amplifier for PSD photoelectric signal
  • Limiting amplifier for PSD photoelectric signal

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Embodiment Construction

[0009] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0010] Such as figure 1 , shown in 2, the present invention is made up of operational amplifier F, the first ~ fifth resistance R1 ~ R5, the first ~ second electric capacity C1 ~ C5, wherein: described operational amplifier F negative input terminal (2 pins) and first electric capacity C1 , The second resistor R2 is connected to form the signal path of the operational amplifier F, and grounded through the first resistor R1, the input signal is the signal source; the output terminal OUT is pin 6; the second capacitor C2 and the third resistor R3 form the operational amplifier F amplification feedback The loop is connected to the feedback terminal of the operational amplifier F (pins 1 and 8), the fourth resistor R4 and the fifth resistor R5 are respectively connected to the positive input terminal of the operational amplifier F and the reference voltag...

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Abstract

This invention provides a PSD photoelectric signal ultimate amplifier composed of an operational amplifier, a first-fifth resistors and a first, second capacitors, among which, the negative end of the operational amplifier is connected with the first capacitor and second resistor to make up a signal channel to connect to the ground via the first resistor, the output end is 6 feets, the said second capacitor, and the third resistor make up the amplified feed back loop to be connected with the feed back end of it, the fourth and fifth resistors are connected with the positive input end and reference voltage end to regulate its stability.

Description

technical field [0001] The invention belongs to the amplification technology, in particular to a PSD photoelectric signal limit amplifier. Background technique [0002] In the prior art, typical voltage signal amplifiers generally perform linear (proportional) amplification. That is, the amplification of the input voltage signal is realized by setting the feedback resistor. Usually such an amplifier not only amplifies the signal, but also amplifies the noise signal. Therefore, it is impossible to make the magnification of the first-stage amplifier very large. In practical applications, there are many occasions limited by the use of devices (such as photoelectric conversion devices), and the obtained electrical signals are very weak and accompanied by various noises. Therefore, to collect effective signals with sufficient energy (amplitude), it is often necessary to modulate the signal source (such as a light source), and then use multi-stage amplification on the electrica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/00
Inventor 董再励王俊朱枫郝颖明欧锦军
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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