[Boatanchors] Transformers and Chokes Source

[Greg Mijal]

Cuz the voltage output is the same as a half wave and you are not using much 
current from the transformer so the half wave single diode is the least 
expensive way to do it.
73's
Greg
WA7LYO
Kinston NC
----- Original Message ----- 
From: "J. Forster" <jfor at quik.com>
To: "Glen Zook" <gzook at yahoo.com>
Cc: <boatanchors at mailman.qth.net>
Sent: Thursday, October 08, 2009 12:19 PM
Subject: Re: [Boatanchors] Transformers and Chokes Source


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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