| 摘要 |
<p>PURPOSE:To improve comfortability and to economize in energy, by setting an operation start time of the device and operating the device at a high graduation for a constant time after the operation start so that the temperature is automatically at a set graduation after the constant time. CONSTITUTION:When the inverted input voltage of a voltage comparator CP is a constant value to warm a temperature sensitive material PTH, the collector potential of a transistor (TR) Q1 is lowered; and when the noninverted input potential becomes lower than the inverted input potential, a TRQ3 is turned off, and an energizing current is not flowed to a relay coil RC to stop heating of a heater H. When the temperature sensitive material PTH is cooled, the noninverted input potential of the voltage comparator CP becomes higher than the inverted input potential, and the TRQ3 is turned on, and the energizing current is flowed to the relay coil RC, and power is supplied to the heater H to start heating again.</p> |
