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Another PSU design question- CLC filters

Hi guys

I got the info I was looking for last time, and I have downloaded and played around with the Duncan Amps Power Supply Designer program. I have one more question though, and it has to do with C-L-C filters (which I can't simulate in the Duncan program).

Now I have seen that for a straight C-filter, the voltage on the secondaries increase by a ratio of 1.414, and for an L-C filter, it decreases by a ratio of 1.414 (ignoring for the moment losses due to the bridge rectifier). What happens though if you use a C-L-C filter? From one design I saw it seems that the V-out = V-secondaries. Is this correct?

IOW, for V-secondaries of say 20V, a C-filter will give a V-out of 28.3V, and an L-C filter will give a V-out of 14.14V. If so, will a C-L-C filter give a V-out of 20V?

Thanks for the help :-)

Enjoy,
Deon


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Topic - Another PSU design question- CLC filters - Deon C 17:28:15 12/10/02 (3)


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