Communication on two power supply channels
A Communication System includes a first power supply channel including a first impedance and a second impedance, and configured to transfer electrical power from a first power source to a first load. The first power supply channel is configured to electrically couple to the first power source via a first common mode choke. The communication system also includes a second power supply channel comprising a third impedance and a fourth impedance, and configured to transfer electrical power from a second power source to a second load. The second power supply channel is configured to electrically couple to the second power source via a second common mode choke. The communication system further includes a first transceiver comprising a first output pin electrically coupled to the first power supply channel and a second output pin electrically coupled to the second power supply channel at a first end of the communication system.
1. A communication system comprising:
a first power supply channel comprising a first impedance and a second impedance, the first power supply channel being configured to transfer electrical power from a first power source to a first load, wherein the first power supply channel is configured to electrically couple to the first power source via a first common mode choke;
a second power supply channel comprising a third impedance and a fourth impedance, the second power supply channel being configured to transfer electrical power from a second power source to a second load, wherein the second power supply channel is configured to electrically couple to the second power source via a second common mode choke; and
a first transceiver comprising a first output pin electrically coupled to the first power supply channel and a second output pin electrically coupled to the second power supply channel at a first end of the communication system, the first transceiver being configured to generate a differential signal comprising a first signal and a second signal, wherein the first signal is transmitted to the first power supply channel via the first output pin, and the second signal is transmitted to the second power supply channel via the second output pin, and wherein the first output pin is electrically coupled to the first impedance via a first capacitor and to the second impedance via a second capacitor, and wherein the second output pin is electrically coupled to the third impedance via a third capacitor and to the fourth impedance via a fourth capacitor.
2. The communication system of claim 1 , wherein the first capacitor attenuates a component of an electrical signal transmitted to the first transceiver.
3. The communication system of claim 1 , wherein the first impedance and the first capacitor are coupled to a first choke pin of the first common mode choke, and wherein the second impedance and the second capacitor are coupled to a second choke pin of the first common mode choke.
4. The communication system of claim 3 , wherein the first choke pin of the first common mode choke is configured to receive a first portion of the first signal via the first capacitor, and the second choke pin of the first common mode is configured to receive a second portion of the first signal via the second capacitor; and
wherein the first common mode choke is configured to prevent transmission of the first signal to the first power source.
5. The communication system of claim 1 , wherein the third impedance and the third capacitor are coupled to a third choke pin of the second common mode choke, and wherein the fourth impedance and the fourth capacitor are coupled to a fourth choke pin of the second common mode choke.
6. The communication system of claim 1 , wherein the first load is coupled to the first power supply channel via a third common mode choke.
7. The communication system of claim 6 , wherein the second load is coupled to the second power supply channel via a fourth common mode choke.
8. The communication system of claim 7 , further comprising a second transceiver comprising a first input pin electrically coupled to the first power supply channel and a second input pin electrically coupled to the second power supply channel at a second end of the communication system, the second transceiver configured to receive at least a portion of the first signal transmitted over the first power supply channel and at least a portion of the second signal transmitted over the second power supply channel.
9. The communication system of claim 8 , wherein the first input pin is electrically coupled to the first impedance and the second impedance via a fifth capacitor and a sixth capacitor, respectively, and wherein the second input pin is electrically coupled to the third impedance and the fourth impedance via a seventh capacitor and an eight capacitor, respectively.
10. The communication system of claim 9 , wherein the first impedance and the fifth capacitor are coupled to a fifth choke pin of the third common mode choke, and wherein the second impedance and the sixth capacitor are coupled to a sixth choke pin of the third common mode choke.
11. The communication system of claim 9 , wherein the third impedance and the seventh capacitor are coupled to a seventh choke pin of the fourth common mode choke, and wherein the fourth impedance and an eighth capacitor are coupled to an eight choke pin of the fourth common mode choke.
12. The communication system of claim 8 , wherein the first transceiver is configured to generate the differential signal based on an input signal generated by a first device electrically coupled to a third input pin of the first transceiver.
13. The communication system of claim 12 , wherein the second transceiver is configured to generate an output signal representative of the input signal based on the at least the portion of the first signal transmitted over the first power supply channel and the at least the portion of the second signal transmitted over the second power supply channel.
14. The communication system of claim 13 , wherein the input signal and the output signal comprise a control signal configured to control an operation of a second device electrically coupled to a third output pin of the second transceiver.
15. The communication system of claim 14 , wherein the first load comprises an X-ray source and the second load comprises a microcontroller configured to control the operation of the X-ray source.
16. The communication system of claim 15 , wherein the first device is a computing device and the second device is a USB camera configured to view the operation of the X-ray source.
17. The communication system of claim 12 , wherein the input signal is proportional to a difference between the first signal and the second signal.
18. The communication system of claim 1 , wherein the second common mode choke comprises a second pair of load pins configured to electrically couple to the second power source.
19. The communication system of claim 1 , wherein the first power supply channel is a transmission line.
20. The communication system of claim 1 wherein the first common mode choke comprises a first pair of load pins configured to electrically couple to the first power source.