JPS6464698A - Control unit in clothing dryer - Google Patents

Abstract

PURPOSE: To sound a finishing buzzer without providing a contact only for a buzzer at a time switch by providing the controller with a timer circuit and a buzzer starting operation with the output signal of a blowing detection means. CONSTITUTION: At the time of a drying process, since the contact T2 of a time switch 2 is turned on and a transistor 9 is turned off and the transistor 10 is turned off, the level of the output 11 of a blowing process detecting circuit 6 becomes a low level. Next, at the time of a blowing process, since the contact T2 of the switch 2 is turned off and the transistor 9 of a blowing process detecting circuit 6 is turned on and the transistor 10 is turned on, the level of the output 11 becomes a high level. Concerning 8, when an input 12 at the timer circuit 8 is turned from a low level to a high level, a timer 14 and a timer 15 are operated. Both of the outputs of a timer 14 and a timer 15 operate. Between times t1 and t2 , both of the outputs of the timer 14 and the timer 15 come to a high level, the output 11 of an AND circuit 16 comes to a high level and a transistor 17 is turned on to sound the buzzer 5.