H - Electricity – 01 – F
Patent
H - Electricity
01
F
336/60
H01F 27/30 (2006.01) H01F 5/06 (2006.01) H01F 27/00 (2006.01) H01F 27/32 (2006.01)
Patent
CA 1228131
8 ABSTRACT: "Transformer comprising coaxial coils". 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 center of the tubular section (5) in the axial direction to limits (37) located at a pre- determined 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).
482244
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
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