phantom circuit การใช้

• Isolation between the phantom circuit and the side circuits relies on accurate balance of the line and transformers.
• At the turn of the century as telephone lines became available, it became popular to add telegraph onto telephone lines with an earth return phantom circuit.
• However, " bunched pairs " can also refer to the straightforward connection of two lines in parallel which is not a phantom circuit and will not reduce the loading.
• It is theoretically possible to create a phantom circuit from two other phantom circuits and so on up in a pyramid with a maximum 2n-1 circuits being derived from n original circuits.
• It is theoretically possible to create a phantom circuit from two other phantom circuits and so on up in a pyramid with a maximum 2n-1 circuits being derived from n original circuits.