[TowerTalk] zero RFI float charger for 12V battery

[Wes]

Maybe Jameco:

https://www.jameco.com/shop/StoreCatalogDrillDownView?langId=-1&storeId=10001&catalogId=10001&position=1&refineType=2&sub_attr_name=Primary%20Output%20Voltage%20(VDC)&refineValue=6%20%3C%3D%20%20%3C%2013&refine=1&history=8t8d8frn%7CsubCategoryName~Power%2BSupplies%2B%2526%2BWall%2BAdapters%5Erdtvalue~Power-Supplies-Wall-Adapters%5Ecategory~45%5EcategoryName~category_root%5EprodPage~25%5Epage~SEARCH%252BNAV%40gig6ohxx%7Ccategory~4535%5EcategoryName~cat_45%5Eposition~1%5Erefine~1%5EsubCategoryName~Power%2BSupplies%2B%2526%2BWall%2BAdapters%2B%252F%2BAC-to-DC%2BLinear%2BRegulated%5EprodPage~25%5Epage~SEARCH%252BNAV

Wes  N7WS


On 7/25/2020 12:22 PM, jimlux wrote:
> On 7/25/20 12:17 PM, jimlux wrote:
>> I'm putting some remote gear (tuner & relay boxes) at the antenna base that 
>> runs off a standard 12V-7Ah battery (control is via WiFi) that runs the 
>> microcontroller and energizes the relays, etc.  Average load is low, peak 
>> load is high.
>>
>> I've got a nice inexpensive powersonic wallwart fast/float charger, but it's 
>> a switcher, and noisy.
>>
>> I'm looking for a inexpensive, wall wart style charger that has *some* 
>> regulation (AC line voltage will vary, temperature varies, etc.), and I'm not 
>> looking to build something. I just want to plug it in and have it work.
>>
>> Has anyone run across such a thing? (countless items in catalogs, but nothing 
>> talks about RFI.. maybe there's a key term to look for?)
>>
>
> One problem seems to be that conventional linear regulators are too 
> inefficient to be sold as consumer products.
>
> _