Simple Power Supply Again
 

Perhaps a newsgroup about electronics?

Barry Criner wrote:
I posted a question several days ago about needing a design for a simple
DC power supply of about 2amps at 12v that is adjustable from an
external pot. I got several answers, but none that gave me a design for
a supply. The supply does not need elaberate regulation or filtering.
Anybody got a design?

Thanks -

Barry

Simple Power Supply Again
 

http://users.pandora.be/educypedia/e...tssupplies.htm

There are several different power supplies with schematics.

"Barry Criner" wrote in message
...
I posted a question several days ago about needing a design for a simple
DC power supply of about 2amps at 12v that is adjustable from an
external pot. I got several answers, but none that gave me a design for
a supply. The supply does not need elaberate regulation or filtering.
Anybody got a design?

Thanks -

Barry

Simple Power Supply Again
 

On Wed, 23 Jul 2003 23:40:03 GMT, Barry Criner
wrote:

I posted a question several days ago about needing a design for a simple
DC power supply of about 2amps at 12v that is adjustable from an
external pot. I got several answers, but none that gave me a design for
a supply. The supply does not need elaberate regulation or filtering.
Anybody got a design?

Thanks -

Barry

I just got done making another work radio cause the last one got
ripped off. I get a DC power supply of 3 - 4 amps @ 14 v and hook up
a CD and tape car radios with a 12 pin toggle switch to run on only
two speakers. I'm no electronic engineer , but I don't see much of a
problem to put in an adjustable resistor. Go to an industrial
electronic parts supplier.

Simple Power Supply Again
 

Electric Model aircraft speed control connected to a car battery

Simple Power Supply Again
 

On Wed, 23 Jul 2003 23:40:03 GMT, Barry Criner
wrote:

I posted a question several days ago about needing a design for a simple
DC power supply of about 2amps at 12v that is adjustable from an
external pot. I got several answers, but none that gave me a design for
a supply. The supply does not need elaberate regulation or filtering.
Anybody got a design?

Thanks -

Barry

cheapo 12v 2amp trickel charger plugged into a variac. Not the
cheapes in the world, but pretty much foolproof and you can still ise
it as a charger and a variac.

Dave

Simple Power Supply Again
 

On Wed, 23 Jul 2003 23:40:03 GMT, Barry Criner
pixelated:

I posted a question several days ago about needing a design for a simple
DC power supply of about 2amps at 12v that is adjustable from an
external pot. I got several answers, but none that gave me a design for
a supply. The supply does not need elaberate regulation or filtering.
Anybody got a design?

Got a local library?

Guidebook of electronic circuits; over 3,600 modern electronic
circuits, each complete with values of all parts and performance
details, organized in 131 logical chapters for quick reference and
convenient browsing.
Author: Markus, John, 1911-

Modern electronic circuits reference manual Book
Author: Markus, John, 1911-

Handbook of practical electronic circuits Book
Author: Lenk, John D.

The encyclopedia of electronic circuits Book
Author: Graf, Rudolf F.

or anything which says something like "Electronics Cookbook"

http://www.google.com/search?&q=12v+...pply+schematic
gave me 14,800 hits in half a second.


P.S: It's probably quicker, cheaper, and easier to just buy one.
http://www.mpja.com/productview.asp?product=6068+KT is a 1A kit
for $7.89 and their product=14628+PS 12v2A for $10. Their 3-30v
variable bench supply with meters and pots is $25.


----------------------------------------------
Never attempt to traverse a chasm in two leaps
http://www.diversify.com Comprehensive Website Design
================================================== =========

Simple Power Supply Again
 

There's a number of circuits on the web that are model train power packs or
supplies. Everything from Variac supplies to electronic ones that use all
kinds of output devices. Even a fair number of them are PWM designs which
are very good for controlling motors.

--
Bob May
Losing weight is easy! If you ever want to lose weight, eat and drink less.
Works evevery time it is tried!

Simple Power Supply Again
 

Barry Criner wrote in message ...
I posted a question several days ago about needing a design for a simple
DC power supply of about 2amps at 12v that is adjustable from an
external pot. I got several answers, but none that gave me a design for
a supply. The supply does not need elaberate regulation or filtering.
Anybody got a design?

Thanks -

Barry

Hi Barry,
This page has schematics for just about everything
http://www.commlinx.com.au/schematics.htm
There are more than 100 power supply schematics one of which should
suit your purposes.
Glenn

Simple Power Supply Again
 

Use a battery charger and a variac. Or, just use any isolation
transformer, a variac and a full wave bridge rectifier.

Pete Stanaitis
------------------

Grant Erwin wrote:

Perhaps a newsgroup about electronics?

Barry Criner wrote:

I posted a question several days ago about needing a design for a
simple DC power supply of about 2amps at 12v that is adjustable from
an external pot. I got several answers, but none that gave me a
design for a supply. The supply does not need elaberate regulation or
filtering. Anybody got a design?

Thanks -

Barry

Simple Power Supply Again
 

Better put some filtering on it. Battery chargers do not put out pure DC
but pulsating DC. Look at it on a scope.

Check out this site. Pick out the design you need. All the power supply
schematics you have ever thought of and much more.
http://www.commlinx.com.au/schematics.htm

Roger L

"Pete & sheri" wrote in message
...
Use a battery charger and a variac. Or, just use any isolation
transformer, a variac and a full wave bridge rectifier.

Pete Stanaitis
------------------

Grant Erwin wrote:

Perhaps a newsgroup about electronics?

Barry Criner wrote:

I posted a question several days ago about needing a design for a
simple DC power supply of about 2amps at 12v that is adjustable from
an external pot. I got several answers, but none that gave me a
design for a supply. The supply does not need elaberate regulation or
filtering. Anybody got a design?

Thanks -

Barry