I've had very good success with BatteryMinder float chargers attached
standby for years. They work on a pulse charge system and go months
before I add a little water to flooded batteries. The pulse system also
desulphates older batteries and in some cases with substantial
restoration of A-H capacity. No RFI heard. Every other float charger
I've had needed frequent water or destroyed the battery.
Available as wall warts and in larger capacities 12 and 24v.
Grant KZ1W
On 7/25/2020 18:37, Wes wrote:
I probably told you about them. Iota is here in Tucson and eons ago I
moonlighted for some of the principals at another startup company.
I've also used their stuff in my RV and have recommended them many times.
That said, the OP is looking for a wall wart size unit.
Wes N7WS
On 7/25/2020 5:50 PM, Bob Turner wrote:
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@contesting.com] On Behalf Of
Wes
Sent: Saturday, July 25, 2020 8:25 PM
To: towertalk@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.
_
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