# US 5,705,922 A · Terminator with voltage regulator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,705,922 A - Document ID: US5705922A - Status: Granted - Kind: A - Application number: 08/413,303 - Filed: 1995-03-30 - Granted: 1998-01-06 - Earliest claimed: 1995-03-30 - Assignees: The Whitaker Corporation - Inventors: Jason VanDyke - Web page: https://patentgrep.com/patent/US5705922A ## CPC - H04L 25/0298: {Arrangement for terminating transmission lines} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A line terminator (1) having a circuit board (8) with at least three circuits, and including a voltage regulator (2) combined with a voltage divider circuit and a noise reduction circuit path (17). The noise reduction circuit path (17) is coupled to two spaced apart high frequency capacitors (28a,28b), and the noise reduction path is apportioned to extend equally between the pair of spaced apart capacitors (28a,29b) and generally circumscribe the remaining circuits of the circuit board (8). ## Claims ### Claim 1 A line terminator comprising: a circuit board having at least three circuits and being provided with a voltage regulator combined with a voltage divider circuit and a noise reduction circuit having a circuit path generally circumscribing remaining circuits of the circuit board and coupled to two spaced apart high frequency capacitors, and the path length is apportioned to extend equally between the pair of spaced apart high frequency capacitors, whereby high frequency noise and voltage spikes are shunted to ground. ### Claim 2 (depends on 1) A line terminator as recited in claim 1 wherein, the circuit path circumscribes the voltage divider circuit. ### Claim 3 (depends on 1) A line terminator as recited in claim 1, and further comprising: a conductive shield on the bottom surface of the circuit board provided with a conductive grid. ### Claim 4 (depends on 1) A line terminator as recited in claim 1 wherein, the circuit path of the noise reduction circuit is referenced to V-out of the voltage regulator, and the pair of spaced apart capacitors are connected between the circuit path and ground. ### Claim 5 (depends on 1) A line terminator as recited in claim 1 and further comprising: a ground electrical path bridging between opposite sides of the circuit path, and the capacitors being connected between the ground electrical path and respective opposite sides of the circuit path. ### Claim 6 (depends on 1) A line terminator as recited in claim 1, and further comprising a low frequency capacitor for shunting low frequency noise to ground. ### Claim 7 (depends on 1) A line terminator as recited in claim 1, and further comprising a low frequency capacitor for shunting low frequency noise to ground. ### Claim 8 A line terminator comprising: a voltage regulator, and a voltage divider circuit on a circuit board having at least three circuits, both said voltage regulator and said voltage divider circuit being coupled to a circuit path supplying input voltage from the voltage regulator, wherein the circuit path extends on the circuit board generally circumscribing remaining circuits of the circuit board and is apportioned to extend equally between a pair of spaced apart high frequency capacitors, and the high frequency capacitors are connected between the circuit path and ground, whereby high frequency noise and voltage spikes are shunted to ground. ### Claim 9 (depends on 8) A line terminator as recited in claim 8 wherein, the circuit path circumscribes the voltage divider circuit. ### Claim 10 (depends on 8) A line terminator as recited in claim 8 wherein, the circuit path circumscribes the voltage regulator. ### Claim 11 (depends on 8) A line terminator as recited in claim 8 wherein, the circuit path of the noise reduction circuit is referenced to V-out of the voltage regulator, and the pair of spaced apart capacitors are connected between the circuit path and ground. ### Claim 12 (depends on 8) A line terminator as recited in claim 8 wherein, the circuit path of the noise reduction circuit is referenced to V-out of the voltage regulator, and the pair of spaced apart capacitors are connected between the circuit path and ground. ### Claim 13 (depends on 8) A line terminator as recited in claim 8 and further comprising: an electrical connector, electrical contacts in the electrical connector connected to respective plating lined holes through a circuit board, multiple resistors in the voltage divider circuit, the resistors being connected between V-out of the voltage regulator respective plating lined holes through the circuit board, and a conductive shield on a bottom surface of the circuit board provided with a conductive grid. ### Claim 14 (depends on 8) A line terminator as recited in claim 8 and further comprising: a ground electrical path bridging between opposite sides of the circuit path, and the capacitors being connected between the ground electrical path and respective opposite sides of the circuit path. ### Claim 15 An assembly of a circuit board and an electrical connector, comprising: a circuit board having at least three circuits and being provided with a voltage regulator combined with a voltage divider circuit and a noise reduction circuit having a circuit path generally circumscribing remaining circuits of the circuit board and coupled to two spaced apart high frequency capacitors, and the path length is apportioned to extend between the pair of spaced apart high frequency capacitors; and an electrical connector on the circuit board, electrical contacts in the electrical connector connected to respective plating lined holes through the circuit board, multiple resistors in the voltage divider circuit, the resistors being connected between V-out of the voltage regulator and respective plating lined holes through the circuit board, whereby high frequency noise and voltage spikes are shunted to ground. ### Claim 16 (depends on 15) An assembly as set forth in claim 15, and further comprising a low frequency capacitor for shunting low frequency noise to ground. ### Claim 17 (depends on 15) A line terminator as recited in claim 15 wherein, the circuit path circumscribes the plating lined holes through the circuit board. ### Claim 18 (depends on 17) A line terminator as recited in claim 17 wherein, the circuit path of the noise reduction circuit is referenced to V-out of the voltage regulator, and the pair of spaced apart capacitors are connected between the circuit path and ground. ### Claim 19 An assembly of a circuit board and an electrical connector, comprising: a voltage regulator, and a voltage divider circuit on a circuit board having at least three circuits, both said voltage regulator and said voltage divider circuit being coupled to a circuit path supplying voltage from the voltage regulator, wherein the circuit path extends on the circuit board generally circumscribing remaining circuits of the circuit board and is apportioned to extend equally between a pair of spaced apart high frequency capacitors, and the high frequency capacitors are connected between the circuit path and ground; and an electrical connector, electrical contacts in the electrical connector connected to respective plating lined holes through the circuit board, multiple resistors in the voltage divider circuit, the resistors being connected between V-out of the voltage regulator and respective plating lined holes through the circuit board, whereby high frequency noise and voltage spikes are shunted to ground. ### Claim 20 (depends on 19) An assembly as set forth in claim 19, and further comprising a low frequency capacitor for shunting low frequency noise to ground. ### Claim 21 (depends on 19) A line terminator as recited in claim 19 wherein, the circuit path circumscribes the plating lined holes through the circuit board.