| 摘要 |
The circuit breaker (2) is connected to a power supply (1), its output is connected to a power source (12) of electronics and to the electrically controlled switch (3) of the line voltage, which is connected to the input of the AC autotransformer (4). The output of the AC autotransformer (4) is connected to the input of the two-way bridge rectifier (5), where in its output is connected to the coil (7) through the negative temperature coefficient thermistor. The input of the electrically controlled switch (3) of the line voltage is connected to the output of the circuit (8) of the delay circuit switching, whose input is connected to the comparator (15). There is a temperature sensor (16) of the coil (7) connected to the input of the comparator (15) and the output of the sensor (13) of the magnetic induction of the coil (7) is connected to the circuit (14) of the signal normalization, the output of which is connected to the input of the analog-to-digital converter (11). Output of the analog-to-digital converter (11) is connected to the microprocessor (10), the output of which is connected to the display (9). There is a power source (12) of electronics, which is connected to the display (9), the microprocessor (10), the analog-to-digital converter (11), the circuit (14) of the signal normalization, the sensor (13) of the magnetic induction of the coil (7), the temperature sensor (16) of the coil (7), the comparator (15) and the circuit (8) of the delay circuit switching. |
