During the design of pulse transformer used in IGBT solid switch, there are problems of output-consistence and insulation to be resolved.

为了设计IGBT固体开关的脉冲变压器，需要解决输出一致性和绝缘问题。

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Heighway Pinball's solution is to introduce inductive switch technology: solid state sensors beneath the playfield, well out of the way of flying steel balls, which are triggered when a ball passes by without any physical contact.

BBC: Flipping heck: Is pinball about to stage a recovery?

With a mechanical keyboard, on the other hand, each key press triggers an actual on-off switch a feeling as solid as flicking on the lights.

WSJ: Keys That Really Click

As this is being written, massive outages in its service are spreading throughout the network, whose rock-solid reliability kept many IT leaders from being willing to make a switch.

FORBES: Is It Too Late To Fix Research In Motion?