Flashlight with soft turn on control
    1.
    发明授权
    Flashlight with soft turn on control 失效
    手电筒带软启动控制

    公开(公告)号:US4855647A

    公开(公告)日:1989-08-08

    申请号:US38202

    申请日:1987-04-14

    IPC分类号: H05B39/02

    CPC分类号: H05B39/02

    摘要: A flashlight is provided with a special circuit for limiting the surge current through the flashlight bulb. The circuit includes a secondary incandescent filament used to energize a transistor gradually upon the activation of flashlight. The transistor in turn gradually energizes the main bulb.

    摘要翻译: 手电筒配有专用电路,用于限制通过手电筒灯泡的浪涌电流。 电路包括用于在手电筒激活时逐渐激励晶体管的次级白炽灯丝。 晶体管又逐渐激活主灯泡。