本文作者被赋予做一台真正低成本的扫频音调产生器(swept frequency tone generator)，只使用一些简单的运算放大器，且没有一个零件是单一来源…他成功了，且这台扫频音调产生器在产线被生产了500台。 我需要做一台真正低成本的扫频音调产生器(swept frequency tone ...

I needed to make a really low-cost swept frequency tone generator using just some spare op-amp sections and no parts that were sole source. Fortunately, the sweep requirements weren't terribly ...

[Eric Wasatonic] had a box of SWB2433 transistors that he had very little information about. In order to discover their properties, he fired up his curve tracer to compare these transistors with more ...