线性电源绕开CEC要求的方法
大家能否讨论一下: 线性电源绕开CEC要求的方法.譬如,次级采用双绕组, 能有效避开CEC要求吗?
引用:
These Standards apply to each single-voltage external AC to DC, or AC to AC power supply
that meets the following conditions:
1. is designed to convert line voltage AC input into lower voltage DC or AC output;
2. is able to convert to only one DC or AC output voltage at a time;
3. is sold with, or intended to be used with, a separate end-use product that
constitutes the primary load;
4. is contained within a separate physical enclosure from the end-use product;
5. is connected to the end-use product via a removable or hard-wired male/female
electrical connection, cable, cord, or other wiring;
6. does not have batteries or battery packs that physically attach directly (including
those that are removable) to the power supply unit;
7. does not have a battery chemistry or type selector switch and an indicator light;
or, does not have a battery chemistry or type selector switch and a state of
charge meter;
8. has a nameplate output power less than or equal to 250 watts. 这句话不是说只有一路电源输出,而是一次只是变换一个直流或交流电压,类似于一次电源的意思.
比如你用线性变压器把AC220变成AC30,再经过稳压电路或又DC-DC变换器变成12V就不是标准适用的电源,虽然你可能最终输出只有一个电压.
我个人的理解. 这个地方颇有争议,
我做MEPS认证时,和Testing&Certification Australia的工程师沟通时,他们也没有办法确定; 我无法理解二楼的话.
引用:"比如你用线性变压器把AC220变成AC30,再经过稳压电路或又DC-DC变换器变成12V就不是标准适用的电源,虽然你可能最终输出只有一个电压."
如此的经过线性电源得到的DC电压是否都不适用此标准呢? 如只经过简单的整流.
有高人可以解答吗/
谢谢! 正如楼主说的2.条，CEC只针对单组输出，如果楼主做双绕组是可以不用做的。
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