| 摘要 |
PURPOSE:To enable to easily detach a table top plate by a method wherein two wireless operating parts for temperature adjustment, which are provided on the table plate and on the Kotatu main body respectively, are made switchable. CONSTITUTION:When the Kotatu is used with the table detached, the contact of a change-over switch 25 is closed at the B side. Consequently, a resistor 28 connected to DC power source and a gate signal determined by a variable resistor 29 to be set by the operating part 44 equipped at the one side of the Kotatu main body are applied to the gate of a programmable unijunction transistor (PUT) 24. And yet serrated signals synchronized with AC power source are applied to the anode 12 of the PUT24. When said anode signal becomes higher level than the gate signal, the PUT24 conducts on one shot in order to energize a motor fan 41. Consequently, a semiconductor heater 42 generates the quantity of heat corresponding to te rotational frequency of the fan 41. |
