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 Post subject: Power Supply question
PostPosted: June 7th, 2020, 8:09 am 
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Joined: January 15th, 2015, 7:19 am
Posts: 1204
Location: Baltimore MD
Let’s say you start off with a pi network cap-inductor-cap. I understand if you drop the first cap you have a choke loaded ps but to get the same voltage out as with the pi network you have to increase the volts in.
Why?


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PostPosted: June 7th, 2020, 9:22 am 
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Joined: May 21st, 2017, 11:34 am
Posts: 17
Capacitors try to maintain a constant voltage. That means that a large enough capacitor will charge up to the peak of the transformer output, which is ~1.414 x transformer secondary voltage.

Inductors try to maintain a constant current. That means that a large enough inductor will cause the subsequent capacitors to charge to the average of the AC sine wave voltage, which is ~0.9 x transformer secondary voltage.


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PostPosted: June 7th, 2020, 10:32 am 
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Joined: January 15th, 2015, 7:19 am
Posts: 1204
Location: Baltimore MD
wow that was simple
thanks


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