🚀 go-pugleaf

On Wed, 11 Jun 2008 14:29:43 +1000, F Murtz <haggisz@hotmail.com>
wrote:

>legg wrote:
>> On Wed, 11 Jun 2008 11:24:33 +1000, F Murtz <haggisz@hotmail.com>
>> wrote:
>> 
>>> F Murtz wrote:
>>>> I would like to make an adjustable power supply using a transformer with 
>>>> a 24v 5a single wound secondary I would like the voltage to be 
>>>> adjustable from lowest to highest possible given transformer I would 
>>>> like to have regulated current
>>>>
>>>> There is another possibility I also have a larger transformer with two 
>>>> 32v 4.7a secondaries If anyone has a schematic for an adjustable power 
>>>> supply with adjustable current regulation making the most of the 
>>>> transformer specs I would be eternally grateful
>>>
>>> Thanks to every one for their help on power supply design from spec 
>>> sheets etc but I was hoping for an already designed circuit
<snip
>> A fair supply of app notes are available on the web to help you do
>> this, in consideration of the fact that you want to tailor the circuit
>> to transformers that you already have. Normally you wouldn't purchase
>> a part before you had some idea of what you needed, to do what you
>> aimed to do.
>> 
>> http://www.ieeta.pt/~alex/docs/ApplicationNotes/Rectifier%20Applications%20Handbook.pdf
>> 
<snip>
>Thanks I will look into what you have said.
>The reason for using these transformers is that I already have them. I 
>did not buy them They were disused equipment

The Motorola handbook will give a good idea about what your
transformers are capable of, and how they might be configured to give
different output voltages to suit a post regulator. That will be your
first step, and give you your options.

RL