| 摘要 |
1,085,627. Electric, analogue calculating. BECKMAN INSTRUMENTS Inc. Sept. 27, 1965 [Oct. 28, 1964 (2)], No. 40984/65. Heading G4G. A circuit for integrating separately a series of multiplexed data signals derived, e.g. from a flame photometer utilizing multiple rotary interchangeable filters analysing corresponding multiple spectral lines, comprises an input resistor 10, an amplifier 11, and an output 13 with plural storage capacitors 15, 16, 17 corresponding to the successive data signals connected from output to input over switches 19, 20, 21 sequentially operated one at a time in synchronism therewith, e.g. by magnetic operation from the rotary filter. Upon termination of the integration cycle the stored integrated values are readable at the ouput by closing switches 19, 20, 21 independently in sequence, or by closing manually or automatically operated parallel switches such as 22. The capacitors are dischargeable by automatically or manually-operated shunt switches such as 23. Stray capacitance such as 24 is compensated by connecting an inversion amplifier 25 in series with capacitance 26 from output to input; the product of the gain of amplifier 11 and stray capacitance 24 being equal to the product of the gain of amplifier 25 and capacitance 26. The device is applicable to signals derived from other sources. |
