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Old 14-01-2018, 20:42   #16
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Join Date: Sep 2007
Location: Queensland, Australia
Boat: None at present--between vessels. Ex Piver Loadstar 12.5 metres
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Re: Electrically quiet 12 VDC power supply
You might need a rotary inverter. Essentially an elecrtric motor driving a dc generator with capacitor stabilization of the commutator ripple.
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Old 15-01-2018, 00:50   #17
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Re: Electrically quiet 12 VDC power supply
For a few dollars you can quantify the results...

https://www.rtl-sdr.com/spektrum-new...yzer-software/
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Old 15-01-2018, 05:55   #18
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Location: Tarpon Springs fl
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Re: Electrically quiet 12 VDC power supply
I second the IOTA charger , They just work and mostly half the size of others.
I have one aboard .
Morgan 384 Brewer designed Morgan built
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