[Boatanchors] Transformers and Chokes Source

J. Forster jfor at quik.com
Thu Oct 8 12:19:34 EDT 2009


Why a half wave rectifier? Why not a full wave bridge?

-John

==============


> Go to Radio Shack and purchase 2 6.3 volt filament transformers.  Hook the
> primary of 1 to the AC line.  Then hook the filament windings together and
> run the heater ("filament") of the 6AU6 from this junction.  Finally, use
> a half-wave rectifier from the "other" primary winding for the B+.
>
> I have done this many times over the years when I needed about 150 VDC.
>
> Glen, K9STH
>
> Website:  http://k9sth.com
>
>
> --- On Thu, 10/8/09, Lee Buller <k0wa at swbell.net> wrote:
>
> I need to build a power supply for a VFO - like a VF-1.  I have not done
> this in years, although I remember how.  My junk drawer is not heavy with
> transformers and chokes.  No pun intended.  Where do you find these things
> easily... Ebay?  Antique Electronics?  Suplus Sales of Nebraska? 
>
>
>
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