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答 除了额定功率之外，还有一个数据，叫 过载保护 ，英文叫 OPP。 答 主动式PFC输入电压可以从90V到270V 功率因数高于0.99，并具有低损耗和高可靠等优点 可用作辅助电源，而不再需要辅助电源变压器 输出DC电压纹波很小，因此采用主动式PFC的电源不需要采用很大容量的滤波电容。 答 开关电路的原理是由开关管和PWM Pulse Width Modulation 控制芯片构成振荡电路，产生高频脉冲。 答 300V直流电通过辅助电源开关管成为脉冲电流，通过辅助电源变压器输出二组交流电压，一路经整流、三端稳压器稳压，输出 5VSB，加到主板上作为待机电压 另一路经整流滤波，输出辅助20V电源，供给PWM等芯片工作。 答 被动式PFC一般采用电感补偿方法，通过使交流输入的基波电流与电压之间相位差减小来提高功率因数，被动式PFC的功率因数不是很高，只能达到0.7 0.8，并且发热量比较大。 答 PFC Power Factor Correction 即 功率因数校正 ，主要用来表征电子产品对电能的利用效率。 粤ICP备14000098号 www.miitbeian.gov.cn.
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Jul 24, 2015. Jul 20, 2015. Changes to Pulmonary Function Testing. Jul 08, 2015. The 2015 Pan Am/Parapan Am Games. Apr 30, 2015. Gamma-Dynacare Medical Laboratories Announces Rebranding to Dynacare. Find a specimen collection lab. Find a Patient Services Centre. Preparing for my test. Aug 28, 2014. The Enhanced Gamma-Dynacare Food Intolerance Report. What makes the Gamma-Dynacare Food Intolerance Test even better is the web-based personalized report that your healthcare provider . Jun 13, 2014.
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Gamma-Dynacare Medical Laboratories
Jul 24, 2015. Jul 20, 2015. Changes to Pulmonary Function Testing. Jul 08, 2015. The 2015 Pan Am/Parapan Am Games. Apr 30, 2015. Gamma-Dynacare Medical Laboratories Announces Rebranding to Dynacare. Find a specimen collection lab. Find a Patient Services Centre. Preparing for my test. Aug 28, 2014. The Enhanced Gamma-Dynacare Food Intolerance Report. What makes the Gamma-Dynacare Food Intolerance Test even better is the web-based personalized report that your healthcare provider . Jun 13, 2014.
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GDML Interactive
GDML is an Australian based innovative technology company. GDML specialises in improving traditional business models and opening new markets by thinking about things differently and refining business processes through the application of technology. GDML's core values focus on disruptive thinking, agile development methodology and lean business processes. HOW WE ADD VALUE. Data as a Commodity. We're not here for ping-pong tables or talking about pie in the sky ideas, we're here to build long-term, commerc...
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Simulation Project - GDML
Geometry Description Markup Language (GDML). GDML 3 1 6 released, Updated User's Manual, release 2.7. GDML 3 1 5 released. GDML 3 1 4 released, Updated User's Manual, release 2.6. GDML 3 1 3 released. GDML 3 1 2 released, Updated User's Manual, release 2.5. GDML 3 1 1 released, Updated User's Manual, release 2.4. GDML 3 1 0 released, Updated User's Manual, release 2.3. GDML 3 0 1 released, Updated User's Manual, release 2.2. Updated User's Manual, release 2.1. GDML 3 0 0 released. Bug tracking and support.
