| 摘要 |
FIELD: physics. ^ SUBSTANCE: multichannel fibre-optic system for synchronous launching of recorders has at least one channel, a transmitting 1 and a receiving 3 unit, connected to each other by an optical fibre 2 and a recorder 4. The receiving unit 3 has an opto-electric converter 5 whose power input is connected to the first leads of a first 6 and a second 7 resistor, and the first output is connected to the second lead of the second 7 resistor and through a first 8 capacitor to the input for external launch of the recorder 4; the second output of the opto-electric converter 5 is connected to the first 9 common bus, which is connected to first leads of a second 10 capacitor and a stabilitron 11, whose second leads are connected to the second lead of the first 6 resistor and through a third resistor 12 to the first 13 power bus; the optical input of the opto-electric converter 5 is the input of the receiving unit 3; the transmitting unit 1 has series-connected first 14 and second 15 level converters, the input of the first 14 of which is the input of the transmitting unit 1; the output of the second 15 level converter is connected to bases of the first 16 and second 17 bipolar transistors with n-p-n and p-n-p conductivity, respectively, the collector of the first 16 of which is connected to the second 18 power bus and through a third 19 capacitor is connected to the second 20 common bus which is connected to the collector of the second 17 transistor; emitters of the first 16 and second 17 transistors are combined and are connected through a fourth 21 resistor to the base of the third 22 transistor whose collector is connected to the first leads of the fifth 23 and sixth 24 resistors, the second lead of the fifth 23 resistor is connected to the third 25 power bus and through the fourth 26 capacitor to the second 20 common bus, which is connected to the emitter of the third 22 transistor; the second lead of the sixth 24 resistor is connected through the seventh 27 resistor to the anode of the electro-optic converter 28, whose cathode is connected to the second 20 power bus. ^ EFFECT: galvanic isolation of all recorders from each other and from the launching system, saving a large number of measurement channels. ^ 2 dwg |
