| 摘要 |
The invention relates to a heat protection circuit comprising a first bipolar transistor (T1) whose emitter terminal (E) is connected to a terminal (2) for a reference potential whose collector terminal (C) is connected to a first power source (J1) and whose base terminal is connected to the tap (P) of a voltage divider (R1, R2) which is connected by a first terminal (K1) to the terminal (2) of the reference potential. A temperature-controlled switching signal (SS) can be picked off the collector terminal (C), wherein a second bipolar transistor (T2) is provided and whose emitter terminal (E) is connected to the terminal (2) for a reference potential, whose collector terminal (C) is connected to a second power supply (J2) and whose base terminal (B) is connected to a second terminal (K2) of the voltage divider (R1, R2). |
