The design of the filter circuit, starting current check circuit and switching surge absorption-protection circuit in an auxiliary circuit of PFC is analyzed.

对功率因数校正器辅助电路中的滤波电路设计、起动电流抑制电路的设计和开关的浪涌吸收保护电路的设计进行了分析。

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Froman talked about how the current background check system was broken, noting that an "instant check" in Colorado can actually take about 10 days.

CNN: Gun debate: Where is the middle ground?

Most current STD check-ups for women involve taking a swab from high inside the vagina, which is not only an unpleasant experience for the patient, but an unreliable method of testing.

BBC: pipette and samples

However, NRA chief executive Wayne LaPierre told the panel that the current background check system doesn't work, so expanding it would only create an unmanageable government bureaucracy instead of reducing gun crime.

CNN: Obama still backs new gun ban; top senator less certain