SIGNAL ADDER Russian patent published in 1998 - IPC

FIELD: radio engineering, television, and radio services. SUBSTANCE: signal adder has low- and high-frequency filters 1 and 2 whose inputs are connected, respectively, to low- and high-frequency connectors 3 and 5 and outputs, to common connector 4. Each filter 1,2 incorporates, respectively, three windings 6,7,8 and 9,10,11 made of two stranded conductors and insulation. First conductors of windings 6,7,8 of filter 1 are interconnected in series. Starting lead of conductor of winding 6 is open and connected to central conductor of connector 3. Finishing lead of first conductor of winding 8 is connected to central conductor of connector 4. Starting leads of second conductors of windings 6,7 are open and connected to screen of connector 3. Starting lead of second conductor of winding 8 is connected to screen of connector 4 and its finishing lead is open. In filter 2, starting lead of first conductor of winding 9 is open and its finishing lead is connected to central conductor of connector 4. Starting and finishing leads of first conductor of winding 10 are connected, respectively, to screens of connectors 4 and 5. Starting lead of first conductor of winding 11 is connected to central conductor of connector 5 and its finishing lead, to screen of connector 5. Second conductors of windings 9,10,11 are interconnected in series; starting lead of conductor of winding 9 is connected to screen of connector 4 and finishing lead of second conductor of winding 11 is open. EFFECT: improved design. 1 dwg