[GreenKeys] Power supply for Eric's demodulator

[Jeffrey Angus]

On 1/6/2011 3:07 PM, Jim Haynes wrote:
> On Thu, 6 Jan 2011, Jeffrey Angus wrote:
> (Re: Triad Magnetics FD6-12)
>
>> The two primary windings are designed for about 160 mA
>> each to support the 2.5 A secondary.
>>
>> So, if you use only one of the primaries, you're limited to
>> 160 mA on that winding. Then if you pull 60 mA off of the
>> other primary winding (using it as an output) that leaves
>> about 100 mA to source the secondary 12 V winding.
>> That translates to about 970 mA @ 12 V.
>>
> Thanks for working that out.  So it looks like the transformer
> will be just fine for running one 60ma loop plus a reasonable amount
> of low voltage stuff.
>
>
Yes, just a BCH under a 1 Amp load at 12 Volts.

The thing to keep in mind with any transformer is current in
any one winding based on the overall power capability.

Jeff

Note, my numbers might be off a tad. I blame it on not
enough coffee this morning before I hit send.But they're
wrong on the safe side. ;-)