Method for shortening response time of logarithmic measuring app

Details Method for shortening response time of logarithmic measuring app Method for shortening response time of logarithmic measuring app

1978-01-18

1980-10-14

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

307230, H01J 3928, G06G 712

Patent

active

042283558

ABSTRACT:
A resistor of a specific resistance value is inserted between a signal line for transmitting ionization chamber current and a logarithmic amplifier. The specific resistance value is selected to be a proper value so that the value of a negative feedback capacitance of the logarithmic amplifier can be made zero or extremely small without instability phenomena such as an overshoot, ringing or oscillation. Accordingly, it is possible that the response time of a logarithmic measuring apparatus is extremely reduced in a small input-current region.

REFERENCES:
patent: 2818504 (1957-12-01), De Shong, Jr.
patent: 3448289 (1969-06-01), Harris
K. Franz et al., "The Stabilization of Pulse Amplitudes in Amplifiers with Negative Feedback", Nuclear Instruments and Methods, vol. 27, pp. 125-128, 1964.
G. C. Willems, "Network Table for Easier Control-System Design", Electronic Design, vol. 11, #17, Aug. 16, 1963.

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