Can this Switching Regulator (LM 2576-5) be used with a Basic Stamp

sam_sam_sam

I want to know if I could· use this regulator instead of the one that come with the Basic Stamp OEM kit

Do I need to add any thing To the Switching Regulator circuit that is in the Typical Applications ·I want to use this with a solar panel

Here is the link to it

http://micrel.com/_PDF/lm2576.pdf

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··Thanks for any··that you may have and all of your time finding them

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Sam

Post Edited (sam_sam_sam) : 6/9/2008 1:00:45 PM GMT

Mike Green

You should be able to figure this out.
1) What kind of power source does a Stamp use? What voltage? What current range? What characteristics?
2) Read the datasheets ... for the existing regulator, for the voltage sensitive parts that run off it like the processor and EEPROM.
3) Read the datasheet for the voltage regulator you want to use. The manufacturer usually gives you a schematic for its typical use.
The datasheet also has discussions of issues that might be important to consider. Does any of that apply to your situation?

You ask "if I could use this regulator instead of". You haven't yet provided enough information about what you want to do to be able to answer this.

You ask "Do I need to add anything ... solar panel". You haven't described your power source in enough detail. For example, what's the rating of the solar panel? Do you have any kind of storage for its output? If so, you would have a charge controller. What about it? If not, what do you want to happen when night comes or it's stormy and dark?

LoopyByteloose

In short - 5 volts regulated is required and if your regulator provides 5 volts regulated with enough milliamps, yes. Of course you must read and understand the data sheet.

On the other hand, solar power is a bit dicey. Ratings for panel outputs may not reflect what you really see. The best approach is to have a solar panel charge a battery bank that provides constant power to the microprocessor. DIYers tend to have a lot of trouble perfecting their own set up because they usually attempt to use too few solar panels.

The microprocessor can economize by going into sleep mode between tasks and when the sun is down.

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PLEASE CONSIDER the following:

Do you want a quickly operational black box solution or the knowledge included therein?······

···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

sam_sam_sam

Kramer

Thank You for your reply

In short - 5 volts regulated is required and if your regulator provides 5 volts regulated with enough milliamps, yes. Of course you must read and understand the data sheet.


······ LM2576-5· Data Sheet

It says that it is five volts @ 3 amps output·


I did read the data sheet

I just want to know if there was any thing that was need that was not on the data sheet any other caps for a clean power for the Basic Stamp as for
the other parts to this project it will not matter how clean the power supply
is


Here is the solar panel that i will be using here is the link to it


http://www.harborfreightusa.com/usa/itemdisplay/displayItem.do?itemid=41144&CategoryName=&SubCategoryName=

For the solar panel to battery charger·I was think about a LM2576-ADJ
set for 13.8 volts for a 12 volt battery


I was also going to use some of these LEDs and use the Basic Stamp as the
controller I need to get the details on the power supply work out before I
can work on what i want it to


At this point I do not want give to many more details
·
Here is the link to the LEDs that I am going to use

http://www.goldmine-elec-products.com/prodinfo.asp?number=G16721

http://www.allelectronics.com/make-a-store/item/LED-113/1-WATT-AMBER-ULTRA-ULTRA-BRIGHT-LED/-/1.html

http://www.allelectronics.com/make-a-store/item/LED-111/1-WATT-GREEN-ULTRA-ULTRA-BRIGHT-LED/-/1.html

http://www.allelectronics.com/make-a-store/item/LED-112/1-WATT-BLUE-ULTRA-ULTRA-BRIGHT-LED/-/1.html

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··Thanks for any··that you may have and all of your time finding them

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Sam

Post Edited (sam_sam_sam) : 6/9/2008 5:40:17 PM GMT

LoopyByteloose

Well, it really is hard to provide good sensible advise without details. If this is a commercial project that you want to develop, you really have to provide the 'sweat equity' of doing the design work.

In general, the forum is here to help everyone to learn by sharing goals and info.

Nonetheless, good luck to you.

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PLEASE CONSIDER the following:

Do you want a quickly operational black box solution or the knowledge included therein?······

···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

sam_sam_sam

Kramer

Thank for your reply

If this is a commercial project that you want to develop, you really have to provide the 'sweat equity' of doing the design work.
This is not·a commercial project but it is a project that I want built for the
Halloween and Christmas Times

I also thought that it would be fun to learn how to use these LEDs in a project

I might also built one to use with the low voltage light that is in my yard

that would slow change colors· ......>>>>>>>>>>>>>

http://www.goldmine-elec-products.com/prodinfo.asp?number=G16721

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··Thanks for any··that you may have and all of your time finding them

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Sam

uxorious

The June 2008 issue of Nuts and Volts has a good article about the LM2576 switching regulator. The circuit is very simple and can be used in a wide range of projects. I was pretty impressed at how simple it seems to put into use.

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~~ dRu ~~

LoopyByteloose

I get Nuts and Volts about a month late. The Une issue just arrived with that very clear article on using switching regulators. They are indeed better for battery based power as the wasted power is far less.

But in an A/C powered system, you can easily use a LM7805 with a 2N3055 transistor to get a high power 5 volt output.

With all power projects, one really must start by estimating the maximum amount of power needed and work back from there. Otherwise, you are likely to have 'too little, too late' and require a complete rebuild.

With LEDs, sometimes they are put in series and powered by high voltages as a string. The string can be easily controled by a transistor with less amp [noparse][[/noparse]smaller device] because nearly all transistors work up to 30volts dc. and many can go to 60volts.

Since you may have only 16 I/O pins for control, using series of LEDs gives you a much greater number of LEDs without the limits that low voltage, high amps will place on your design.

You really would be better with 24volts and 3 amps than 5 volts and 3amps. A heck of a lot more lights.

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PLEASE CONSIDER the following:

Do you want a quickly operational black box solution or the knowledge included therein?······

···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

sam_sam_sam

Kramer

You really would be better with 24volts and 3 amps than 5 volts and 3amps. A heck of a lot more lights

Thanks for the input and for the ·s

dRudRudRu

Thank You for your reply

That is where·I got the ·from i also built the kit from Nuts and Volts

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··Thanks for any··that you may have and all of your time finding them

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Sam