In message 6c69adeb-a4d8-4dee-a5d4-aec0fd164...@n1k.org, Bob Camp writes:
HI
We seem to have drifted a bit.
This started out as a supply for the Z3xxx Lucent GPSDO’s. [...]
Which, being telco material, is likely built to work exactly the way
I described: An unclean, unregulated DC
.
Bob
From: Bob Camp kb...@n1k.org
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, October 26, 2014 10:37 PM
Subject: Re: [time-nuts] float chargers for oscillator backup power
HI
We seem to have drifted a bit.
This started out as a supply
On Sun, Oct 26, 2014 at 10:29 AM, Jim Lux jim...@earthlink.net wrote:
There are a variety of inexpensive wall-wart packaged float chargers for
lead acid batteries around. Might be easier to just get something off the
shelf.
http://www.power-sonic.com/images/powersonic/chargers/AC-
Hi Jim,
I think these chargers are only meant for float charging the battery. They
are not meant to supply a load (GPSDO) current.
It is more for connecting to your motorcycle or tractor battery and keeping
it fully charged over winter storage conditions.
I just picked up a MeanWell 24 volt
On 10/26/14, 10:43 AM, Brian Lloyd wrote:
On Sun, Oct 26, 2014 at 10:29 AM, Jim Lux jim...@earthlink.net wrote:
There are a variety of inexpensive wall-wart packaged float chargers for
lead acid batteries around. Might be easier to just get something off the
shelf.
Hi:
The Gibbs 5 Mhz frequency standard used a two step power supply system.
http://prc68.com/I/office_equip.html
It uses a couple of series connected UA723 based power supplies. One to drop the AC line to 20 VDC to float charge 3
series connected 6 Volt (18 V total) lead acid batteries and the
On 10/26/14, 10:59 AM, Tom Miller wrote:
Hi Jim,
I think these chargers are only meant for float charging the battery.
They are not meant to supply a load (GPSDO) current.
It is more for connecting to your motorcycle or tractor battery and
keeping it fully charged over winter storage
Where did you get it?
On 10/26/2014 1:59 PM, Tom Miller wrote:
Hi Jim,
I think these chargers are only meant for float charging the battery.
They are not meant to supply a load (GPSDO) current.
It is more for connecting to your motorcycle or tractor battery and
keeping it fully charged over
In message CAGVVbuFAM=u5Uhdf+wgTUNuoeMZ+=pzwq4jpugjnjdd60fg...@mail.gmail.com
, Brian Lloyd writes:
There are a variety of inexpensive wall-wart packaged float chargers for
lead acid batteries around. Might be easier to just get something off the
shelf.
Some of these things are
Living in south Florida backup power is short term and long term. As lab
batteries I use T 105 also known as Golf Cart batteries. Costco has those 6
Volt 200+A batteries for less than $ 80. Super price. Yes I have Costco
stock. For charging I use a VIctron Energy Phoenix 12 V 30 A charger.
A very interesting subject. If I am not mistaken the HP CS battery backup
supplies use a charger and post regulator/inverter. The charger is well
designed but linear as I recall. I have one in the basement with 2 X 28
Amp hour SLA batteries. Purchased new. I screwed around with flea market
duds.
I had a sail boat with six of those T105 batteries and the big AC charger
too. But I was running lights, a microwave oven, radios and so on. Those
batteries held kilowatt-hours of energy. That is gross over kill for a
GPSDO.
The simplest setup for a low power device is a LiPo battery of the
A pack made up of QUALITY 18650 sized cylindrical Li-ion cells would be a
much wiser choice. Only use cells from well known big-name makers (Sanyo,
Panasonic, Samsung, Sony). And make sure they are genuine cells.
Yes, buy decent packs made from soldered batteries. Used as a backup to a
low
HI
We seem to have drifted a bit.
This started out as a supply for the Z3xxx Lucent GPSDO’s. In those units, you
have a 24 volt switcher that is driven off of the battery or linear supply.
Since it’s designed as an isolated supply, I doubt the switcher in the GPSDO is
looking for a very clean
Hi Bob,
The little brick says it's happy with 18-36V.
Bob
From: Bob Camp kb...@n1k.org
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, October 26, 2014 10:37 PM
Subject: Re: [time-nuts] float chargers for oscillator backup power
HI
We
b...@evoria.net said:
The little brick says it's happy with 18-36V.
A 2:1 range of input voltage is common for power bricks.
On page 5-4, the Z3801A manual says:
BTS 27 nominal 19-30 operating, over 23 starting
BSC 54 nominal 37-60 operating, over 46 starting
A couple of other
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