| 摘要 |
<p>In a glow element with a glow tube (30) closed at the outer end, in which there at least two series-connected resistors (10, 11), whereby one of the at least two resistors being conductively connected by one end to the closed end of the glow tube and the opposite end of the series-connected resistors being connected to an internal pole (9) projecting into the glow tube from the other end thereof, in order to permit an external wiring of part of the resistors in the glow element, the internal pole (9) has a tubular construction and at least one electrical conductor (8) is passed through the internal pole and is connected to a junction (12) of the at least two resistors (10, 11). Furthermore, the at least two resistors comprise a heating resistor (11) electrically connected to the closed end (14) of the glow tube (30) and a variable resistor (10) with a positive temperature coefficient electrically connected between the internal pole (9) and the heating resistor (11), and wherein a further variable resistor (R3) with a positive temperature coefficient is arranged externally of the glow element and is electrically connected to the electric conductor (8) parallel to the variable resistor (10) of the series-connected resistors.</p> |
