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热词
    • 3. 发明授权
    • Dimmer apparatus
    • 调光装置
    • US4788474A
    • 1988-11-29
    • US936243
    • 1986-12-01
    • Sadao KokubuKoji TakizawaTakao SakakibaraMakoto Okada
    • Sadao KokubuKoji TakizawaTakao SakakibaraMakoto Okada
    • B60Q11/00H05B37/00
    • B60Q11/00
    • An improved dimmer apparatus which can protect an output power transistor for a lamp of a load when the lamp is short-circuited and which can eliminate manual operation for restarting the apparatus after recovery of the short-circuiting of the lamp. The apparatus comprises a detecting circuit which detects short-circuiting of the lamp to turn the transistor off. After lapse of a predetermined interval of time given by a timer circuit, the transistor is turned on to detect whether or not the lamp is still short-circuited. If the lamp is still short-circuited, the transistor is again turned off and then a same sequence of operations will be repeated until it is detected that the short-circuiting of the lamp has been recovered and thus a normal operation of the apparatus is restarted.
    • 一种改进的调光装置,其可以在灯短路时保护用于负载灯的输出功率晶体管,并且可以消除在恢复灯的短路之后重新启动装置的手动操作。 该装置包括一个检测电路,该检测电路检测灯的短路以使晶体管截止。 在经过定时器电路给定的预定时间间隔之后,晶体管被接通以检测灯是否仍然短路。 如果灯仍然短路,则晶体管再次断开,然后将重复相同的操作顺序,直到检测到灯的短路已经恢复,从而重新启动设备的正常操作 。