| 摘要 |
A circuit arrangement for a light signal receiver for receiving and recognising light signals which are transmitted in pulses and on which ambient light is superimposed in a parasitic manner with an undefinable intensity contains a two-pole light sensor and a separate current-voltage converter (N1, N2) for direct current for each terminal of the light sensor (1), in which each terminal is connected to an identical signal input of a current-voltage converter (N1, N2) which have the same transmission behaviour, are connected as amplifying filters and are negative feedback connected in d.c. array and frequency-dependently via the input to which the terminal of the light sensor (1) is connected so strongly that the d.c. voltage across the terminals of the light sensor (1) is constant, regardless of the intensity of the parasitic light and the outputs of the current-voltage converter are a.c. connected to an input of a differential amplifier (N3). |
