Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
eetcowie
User Rank
Blogger
Re: Comparison Tables?
eetcowie   1/14/2014 9:03:50 PM
NO RATINGS
...comparison tables..

Yes, at the end it will be useful to see it all, so they say. I'll decide a good format as I get closer to the end.

Adam-Taylor
User Rank
Blogger
Specification
Adam-Taylor   1/14/2014 3:33:41 PM
NO RATINGS
A great series of blogs, when it comes to specifying a battery what are the cardinal points of the specification (technology, end of life votage, amp hour etc) that the engineer needs to consider.

 

David Ashton
User Rank
Blogger
SLABs
David Ashton   1/14/2014 3:06:28 PM
NO RATINGS
Hi Ivan....another informative article, thanks.  I know VRLAs as SLABs (Sealed Lead Acid Batteries) which in Australia can be confused with a box holding 24 cans of beer :-)  

Can you explain how the technologies for this overcome the gassing that is usual with the wet-cell types?

And how do the so-called Deep-cycle batteries avoid the sulphation that happens with ordinary batteries if they are deep-discharged?

antedeluvian
User Rank
Blogger
capacity Mesurement
antedeluvian   1/14/2014 1:28:59 PM
NO RATINGS
Recent Brad Albing blogged about a new TI chip that acts as a gas guage for lead-acid batteries. It looked good to an innocent like myself, and I was wondering if you thought the product had any merit. Looking at it, it does seem to need to apply a load to guage the remaining charge, but so much of the topic is new to me that I would like an expert's opinion.

antedeluvian
User Rank
Blogger
Lead Acid Batteries
antedeluvian   1/14/2014 1:22:58 PM
NO RATINGS
As Mark Twain might have said, Everyone would like to get rid of the lead-acid battery, but nobody does!

I have been working on a battery backup unit design for industrial power supplies (24VDC) for 12 years or so. There is an old English joke-

Q: How do you start a pudding race?

A: Say go (ask Max to explain)

The project has not gone anywhere because management has never allocated the resources, but the need remains. Part of the issue of the design is that you need to charge a nominal 24VDC battery with a 24VDC power supply. There are several approaches to this, buit our current proposal is a buck/boost switchmode power supply. Boost for when the battery exceeds 24V and buck for the other case.

Anyway one of the considerations is that in order to test the battery, I am told you need to drain the battery through a load. The problem is that once this test is done, the battery needs to be recharged- what happens if backup is needed during the charge cycle? Do you concur with this concept that lead-acid batteries be regularily load-tested?

 

Duane Benson
User Rank
Blogger
Answered before I asked
Duane Benson   1/14/2014 1:16:51 PM
NO RATINGS
re "Sealed lead-acid technology is sluggish and cannot be charged as quickly as other battery systems" - You just answered a question I've had for quite a long time. This has been a good series.

Batteries are a bit of a mystery but too important to be left as a mystery.

Max The Magnificent
User Rank
Blogger
Comparison Tables?
Max The Magnificent   1/14/2014 11:52:35 AM
NO RATINGS
Hi Ivan -- at the end of this, once you've worked your way through every battery technology known to humankind, will you be presenting an overall comparison matrix showing the various technologies in relation to each other?

<<   <   Page 2 / 2


Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Want a Voltera Desktop PCB Printer?
Max Maxfield
13 comments
I just received an email from my chum Javi in Spain. "Have you heard about Voltera (VolteraInc.com)? It's a Canadian company that is going to offer desktop-size PCB printers for fast ...

Aubrey Kagan

Have You Ever Been Blindsided by Your Own Design?
Aubrey Kagan
37 comments
I recently read GCHQ: The uncensored story of Britain's most sensitive intelligence agency by Richard J. Aldrich. The Government Communication Headquarters (GCHQ), Britain's equivalent of ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
15 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...