G+_James Scouten Posted June 22, 2016 Share Posted June 22, 2016 Would this item work a USB phone charger for my car My current 1 is a little inconvenient and puts out about 2-3 db of noise on my Ham radio when in use I was wondering if this could replace it and wouldn't be ruined by using it with a car battery. https://www.amazon.com/dp/B008ZNWOYY/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=4UI8UOGGPPSX&coliid=I18CEI9EZMR7JT https://www.amazon.com/dp/B008ZNWOYY/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=4UI8UOGGPPSX&coliid=I18CEI9EZMR7JT Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 22, 2016 Share Posted June 22, 2016 You'd probably be happier with a linear over switched mode. Would be noticeably 'quieter'. I've noticed more noise once my cell was fully charged. While charging its rather quiet. Might be the freewheeling of the power with no load. Link to comment Share on other sites More sharing options...
G+_James Scouten Posted June 22, 2016 Author Share Posted June 22, 2016 I looked for a linear power supply and the cheapest 1 I found was right at $100 and it wanted 120v AC input not 12ish volt car current my main question is the car battery wouldn't over power the input side of this UBEC. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 22, 2016 Share Posted June 22, 2016 No, its stated good to 6S (22V). Car batteries hover around the 4S (14.8V) Your car is at 13.8 when running. Making a linear isn't all that tough. There are some 3A and 5A linear regulators in T-03 packages. Link to comment Share on other sites More sharing options...
G+_Jason Marsh Posted June 23, 2016 Share Posted June 23, 2016 UBEC or AnyVolt will do fine. I think either one could still give some noise, but you should be able to minimize it with chokes. My Honda S2000 induced awful noise on CB. I choked the power leads and it helped a bunch. I soon moved the radio to the TrailBlazer though, because a little barbie car with a CB? Come on! Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 23, 2016 Share Posted June 23, 2016 CB = Chicken Band. :P James Scouten your noise in the 2m/440 or down in HF? Link to comment Share on other sites More sharing options...
G+_James Scouten Posted June 24, 2016 Author Share Posted June 24, 2016 Eddie Foy Link to comment Share on other sites More sharing options...
G+_James Scouten Posted June 24, 2016 Author Share Posted June 24, 2016 No noticeable noise but FM is usually immune to that kind of noise the noise comes in on HF but it doesn't start under no load only when I charge Link to comment Share on other sites More sharing options...
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