g******u
发帖数: 3060 | 1 抱歉，原来发在英文论坛上的，就直接转贴了。
I built a power-factor-corrected battery charger using Fairchild's
FAN7529 PFC chip and Onsemi's UC2843 constant frequency PWM chip. Basically
it's a boost converter driven by FAN7529 followed by 2843 chip driven
flyback.
It worked fine on my bench for hours. But the customer made a test on a
very deeply discharged battery set (somehow discharged to 8V for 24V
batteries, near dead ones to me) and they said something was not ideal.
When I re-test the returned unit, |
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