BUS MODEM FOR CONSTRUCTION AND INDUSTRIAL ELECTRICAL SYSTEMS Russian patent published in 2010 - IPC H04B3/54 

FIELD: electricity.

SUBSTANCE: bus modem for construction and industrial electrical systems includes module (100) which contains a pair of input pins (1, 2) intended for connection to bus, and a pair of output pins (9, 10) intended for connection to electrical circuit of device which shall be connected to bus. In addition, module (100) includes voltage control circuit (3) capable of receiving voltage from the above bus and controlling the voltage (V_ASB) on capacitor (C1) connected to terminals of the above output pins (9, 10), and transfer control circuit (5) capable of controlling electronic switch (7) which controls the current limit circuit (8) capable of restricting the current on bus during transfer of signals from bus to the devices connected to the bus, and vice versa.

EFFECT: improving reliability and enlarging functional capabilities.

16 cl, 9 dwg