Power Supply for Home lab?

So many incomplete projects. I'm in agony.
Starting it again.

Well, Welcome to element14 community where every topic/chit chat is source of great information not only on the original topic but also on multiple topics within it
So worth reading everything here on element14 community !

About my project, I'm afraid other important projects caught me up and this project( which I thought to be a starter project for this year) has gone to the bottom of projects list to be completed this year. But I will happily follow your project if you make blogs regarding that.

mudz

ha..ha.. look like long story and never ending.

How the project? I also in the process of designing linear PSU (1000W in total with 30V 6A 4channel)

Mudz from your requirement look like you need an power bank and not PSU. he..he..

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LT Spice is free to anyone - if you get  chance then go to one of the Linear Technology lectures about it, delivered by Mike Engelhardt, I went to one in Edinburgh (part of the 2014 LTspice World Circuit ) and it was one of the best lectures of its kind I've ever attended.

Sorry about the random font changes - blame the E14 editor !!

MK

LT Spice is free to anyone - if you get  chance then go to one of the Linear Technology lectures about it, delivered by Mike Engelhardt, I went to one in Edinburgh (part of the 2014 LTspice World Circuit ) and it was one of the best lectures of its kind I've ever attended.

Sorry about the random font changes - blame the E14 editor !!

MK

For those who did NOT sign-up for the first (of 5) courses In "Intro to Power Electronics" hosted at www.coursera.org. Professors are from Univ of Colorado [USA], the course is pretty Good. They even give you a Link to get a copy of "Ltspice". IDK how fully functional is this copy is, but it is worth getting Nevertheless. For my professional needs this Ltspice and my Paid Student Copy of MatLab/Simulink are more than adequate to give me a handle on current technology in electronics. I am always looking out for what will possibly become Prior Art.

USCDADNYC (NY NY USA)

Way back when we had systems out in the country, they used Lead Acid batteries, and 13.8v was the 'desired' voltage to recharge them.

The comment was something along the lines of recharging at the fastest rate without causing undue stress ....

The trouble was many of these systems stayed at near full capacity, so all the 13.8v did was boil off the electolyte and the battery would be dry everytime we checked it.

We reduced the voltage to 13.4v and never had an issue or dry battery.

I've always used 13.4v every since.

Mark

It's an old-school thing, an anachronism. Due to the chemistry of lead acid batteries, they are conveniently chargeable at around 13.8V for a 12V nominal lead acid battery. So old school chargers were literally just a resistor and a 13.8V supply. Today trickle charging can still just be done with a (higher value) resistor, but back in time the accepted approach for normal charging was to use a 13.8V supply. Nowadays this would not be done, there are constant voltage and constant current phases that are observed, and they vary for different battery chemistries.

But in earlier times that would have been expensive to implement.

So, a lot of radio gear (radio being nearly synonymous with all electronics hobbyist activity) at that time could handle 13.8V. The supplies are still made, and any 12V automotive electronics will be able to run off that supply.

To ALL:

We all get product placement Ads (if we allow Cookies. And I do). One product intrigues me. It is a SMPS by Tenma # 72-9470, 13.8Vdc. Why 13.8Vdc? What is so special about 13.8Volts.? I know I am not very current (no pun intended) on Pwr Supplies, but can somebody help me here?

Good Thing I am not Superstitious, but the Tenma Part # has the elements of my Street Address. Weird, You can't make these things up.

USCDADNYC (NY NY USA)

Compact wrote>>...

We've also got an alternative process called Provisional Application which is designed supposedly to allow the applicant up to 12 months to get the Patent application lodged.

ELY Reply>> Same as in the U.S. Being such, I assume that the (required) Specification [detail description of the invention] will support the "Claims" later drafted w/i 12 months, in order to turn the Provisional into a Regular Australian Patent Application. Like the famous WWII US General MacArthur said "the Corps. The Corps. The Corps,

so it is in Patent Law, "The Claims. The Claims. The Claims.".

Compact wrote>>...

In addition to a standard patent we have a local thing called an Innovation Patent that lasts a maximum of 8 years.

These patents are supposedly granted without examination however these patents are only legally enforceable after examination and certification. (As you said WTF?)

ELY Reply>> Interesting this "Innovation Patent(s)", I suppose it is the Australian Patent Office attempt to spur the pace of Innovation. I guess the holder of an Innovation Patent Application, can use it as a Sword under the rubric of: "Patent Pending". Another words, any possible Infringers are on Notice as of the date of filing of the Innovation Patent Application. And Damage can start from that point in Time.

Thx for the Input. Like I said b/f , it is always interesting to converse w/ you

USCDADNYC (NY NY USA)