Abstract
In the article the physical mechanism of optical radiation co-operation with semiconductor devices, technological route of making of MOS - phototransistor with bilateral illumination of channel has been considered. Also the optical transducer with frequency output based on the structure of the bipolar-field transistors with negative resistance and MOSFET with bilateral illumination of channel that is a photosensitive element has been considered. A mathematical model of the radio measuring optical transducer has been developed.