[TowerTalk] zero RFI float charger for 12V battery

[Bob Turner]

Look at the IOTA line of (switcher) PS.  I first heard about them on the RFI reflector about 10 years ago.  I've had mine for about 5 years.  They are RFI quiet, at least my DLS-75 is.  It’s a 3 or 4 stage charger (can't remember), with an option to increase the float voltage by plugging in a jumper.   The jumper is also used to select what type of battery as they have different voltage characteristics.  I have the jumper plugged in on mine, gives a solid 14.2v to my shack.

Bob

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Wes
Sent: Saturday, July 25, 2020 8:25 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] zero RFI float charger for 12V battery

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.
>
> _

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk