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Alternate Power DC-IN on the Euler Bus also with PI filter for batt operation
evilpete
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#14
12-19-2020, 09:53 PM
(07-29-2017, 05:44 PM)MarkHaysHarris777 Wrote:  


The pics above are a rework of the PI filter on my PineA64 desk board.  In this case the schematic has been modified to have two caps in parallel on either side of the inductor, which on this board was wound by hand.

The only change I would recommend is adding a couple "faster" ceramic capacitors given that electrolytic caps have high internal resistance (ESR value) and are considered "slow".

Also a flyback diode on the coil to protect against voltage spikes when unplugged.
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RE: Alternate Power DC-IN on the Euler Bus also with PI filter for batt operation - by evilpete - 12-19-2020, 09:53 PM

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