[ARC5] Collins xfmr ratings

[AKLDGUY .]

After reading Mac's reply, I realised I had meant full-wave rectification,
not half-wave. Most readers probably realised what I meant.

73 de Neil ZL1ANM


On Fri, Aug 15, 2014 at 2:00 PM, D C _Mac_ Macdonald <k2gkk at hotmail.com>
wrote:

> Wouldn't output be about 500VDC using the 1100 c.t. with full-wave
> rectification and choke input with adequate bleeder?
>
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * (Since 30 Nov 53) *
> * k2gkk hotmail com *
> * Oklahoma City, OK *
> * USAF & FAA (Ret.) *
> * * * * * * * * * * *
>
>
>
> > Date: Fri, 15 Aug 2014 08:44:06 +1200
> > From: neilb0627 at gmail.com
> > To: kg4kgl at gmail.com; arc5 at mailman.qth.net
> > Subject: Re: [ARC5] Collins xfmr ratings
>
> >
> > Actually I think that is quite a suitable transformer.
> >
> > The 1100V CT will give 770V DC when half-wave rectified to a capacitor
> > input filter. That leaves a bit of excess for his regulation purposes.
> >
> > OTOH, the 700V CT would give 490V DC in the same half-wave
> configuration. A
> > bit low, but could be used unregulated. There's no real justification for
> > regulation of the entire B+, although the VFO B+ benefits from it.
> >
> > If I was offered that transformer I'd jump at it, so long as the
> > core looked like it could supply 150W or more.
> >
> > 73 de Neil ZL1ANM
> >
> >
> > On Fri, Aug 15, 2014 at 1:02 AM, KG4KGL <kg4kgl at gmail.com> wrote:
> >
> > > Hello all,
> > >
> > > I hope someone here can help with Collins equipment. I have power
> > > transformer model # 672-0286-009
> > >
> > > It is rated at 1100/700 CT but I can not find anything about its
> current
> > > rating.
> > >
> > > I want to build a regulated pwr supply to power among other things a
> > > BC-459.
> > >
> > > Thank you,
> > >
> > > Robert
> > > KG4KGL
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