| 摘要 |
The coils (19) are provided on a tubular section (5) of a coil former (3) at least one of these coils being separated from the next coil through the fact that the second of said coils is provided on an electrically insulating foil (41) wound around the first coil. Each of these two coils (19) is located in a winding space (27), which extends on both sides of the centre of the tubular section (5) in the axial direction to limits (37) located at a predetermined distance from the ends thereof, whilst the foil (41) extends in the axial direction to beyond those limits. In order to ensure an adequate insulation between the leads (17) of consecutive coils (19) and in order to enable subsequent thereto a simple check whether a coil (19) is indeed wholly contained within the prescribed winding space (27), the foil (41) extends in the axial direction substantially to the ends of the tubular section (5) and the foil is transparent and has visually observable marks (43) at the location of the limits (37) of the winding space (27). |
