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ACCELERATOR / AVERAGER CIRCUIT CONTROLS THE RESPONSE TIME OF THERMOPILES

E. Smeu1,*

Affiliation

  1. University “Politehnica” of Bucharest, Physics Dept., Spl. Indepententei 313, Bucharest 060042, Romania

Abstract

Thermal methods for laser radiometry are today the most used. Unfortunately, they are slow. Fortunately, this draw-back can, in some cases, be overcome electronically. The paper presents a detailed way to do this for thermopiles. The response analysis is performed for two circuit versions. Experimental data are presented for a medium-power thermopile, followed by one of the circuits. The system is part of the first Romanian digital powermeter for lasers (third version)..

Keywords

Response of the thermopile, Response time, PID controller, Circuit tuning.

Submitted at: March 12, 2004
Accepted at: Dec. 6, 2004

Citation

E. Smeu, ACCELERATOR / AVERAGER CIRCUIT CONTROLS THE RESPONSE TIME OF THERMOPILES, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 4, pp. 1225-1231 (2004)