Digital current multichannel parallel quick current pre-discharging system

Abstract

The invention belongs to the technical field of a multi-channel pulse amplitude analyzer, and particularly relates to a digital current multichannel parallel quick current pre-discharging system. Thesystem is mainly composed of a power supply part circuit and a current pulse signal amplifying circuit part. The power supply part comprises two symmetric parts, wherein the two symmetric parts are composed of a positive power supply input and a negative power supply input. The positive power supply input and the negative power supply input are connected with a pi-type LC filter circuit, and are connected with an electronic filter circuit. The positive power supply input and the negative power supply input are respectively connected with a positive power supply chip and a negative power supplychip. The positive power supply chip and the negative power supply chip are connected with operation amplifier power supply decoupling circuits. The two operation amplifier power supply decoupling circuits are connected with the current pulse signal amplifying circuit part. The system supplies lossless readout and amplification of an original fast current signal of a photoelectric converter in the system. On the condition of an ultrahigh-speed current signal, signal amplification is realized, and furthermore the time characteristic and the amplitude characteristic of the original time are wholly kept, thereby laying a basic for time spectrum measurement for digital current multiple channels.

Description

technical field [0001] The invention belongs to the technical field of multi-channel pulse amplitude analyzers, in particular to a parallel fast current pre-amplification system with multiple digital current channels. Background technique [0002] Multi-channel pulse amplitude analyzer is the most commonly used instrument in nuclear spectrum measurement and nuclear radiation field measurement. In recent years, thanks to the rapid development of large-scale integrated circuits and hardware-programmable digital devices, multi-channel pulse amplitude analyzers have also developed from traditional analog pulse amplitude analyzers to digital multi-channel pulse amplitude analyzers with stronger performance and richer functions. [0003] Compared with the traditional analog multi-channel pulse amplitude analyzer, the digital multi-channel pulse amplitude analyzer has the characteristics of strong filter shaping ability, and it can synthesize the best filter according to the charac...

AI Technical Summary

Problems solved by technology

However, it is difficult for traditional preamplifier circuits to retain complete time information and pulse amplitude information during signal amplification.

Images