| 摘要 |
The inductance of each toroid coil is calculated so that it is the same as that of others in the same pair, and together the resistance corresp. to the AC current period count is sufficiently strong even to protect against strong current for diodes or switches in the event of short-circuiting. Since the winding of the toroid coil passes one turn around the core, the two must be positioned with like magnet poles towards each other. If a bar is drawn through holes in both and electrically connected in a screening appts. casing at both ends, if the number of windings of the coils are equal, a connection to the bar between the coils can be used for measuring the interference arising on both leads in the connection. - Where the rectifier is used to drive an electronic ringer with ringing AC in a telephone, the central outlet from the bar can supply signals to a subscriber meter built into a telephone. A measurement instrument can be used to measure EMP (interference from thunderstorms or atom bombs) via the central bar outlet. |
