如何在闸流晶体管生产工艺上制造合格的氧化层

在闸流晶体管制造工艺中,在镓扩散后通过氧化的方法形成二氧化硅保护层,做磷扩散的掩蔽膜,对该掩蔽膜的要求有一定的厚度和致密度,需要在理论上进行分析,工艺上进行控制及测量,并在出现质量问题后进行有效分析和解决。

稳定低功耗CMOS延时电路

文章提出一种稳定的低功耗 CMOS 延时电路结构。在 CMOS 闸流晶体管概念的基础上,延时值可以通过控制电流在很大的范围内变化。相比较于传统的 RC 延时电路以及基于倒向器的延时电路,这种结构对电源和温度变化的敏感度更小,更稳定。

Study on Heat Dissipater for High-Power Thyristors in Explosion-Proof Shell

A new type water-cooled heat dissipater for multiple high-power thyristors in explosion-proof shell used in coal mine was designed, and then, the numerical computation of the three-dimensional steady-state temperature distributions under different working conditions for cooling core was conducted in order to understand in detail the heat transfer performance. Based on the computation results, the temperature differences and the maximum heat transfer rates were given. These results of the study on the heat dissipater lay a basis for optimising its structure design and guiding its operation.