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聋人由于听觉失去作用,在一天的工作之后,第二天早上常常不能从睡眠中按时醒过来.即便使用闹钟或者收音机,有时也不能把聋人唤醒,耽误了上班时间.这里介绍的聋人告警器就能使聋人从沉睡中苏醒过来.告警器是由一个时钟(闹钟),加上一个由电子线路控制的直流马达振动器构成的.直流马达放在聋人的枕头下面,通过马达振动使聋人醒过来.这种电路是很简单的.当闹钟的削铃敲响时,这种新式结构的触点、每秒钟以10次或20次的速率接通或断开电路.当触点被接通时,一种短暂的正脉冲传送到“达林顿对排列”构
Deaf due to hearing loss, after a day of work, the next morning often can not wake up from sleep, even using the alarm clock or radio, and sometimes can not wake up the deaf, delayed working hours. Alarms, which wake the deaf from sleeping, consist of a clock (alarm clock) plus a DC motor vibrator controlled by an electronic circuit.The DC motor is placed under the pillow of the deaf by a motor Vibrations wake up the deaf, a circuit that is simple: When the alarm bears a ring, this new structured contact turns the circuit on or off at 10 or 20 times per second. When the contact is turned on, a brief positive pulse is sent to the “Darlington Arrangement”