[Drake] Using Heathkit HP-23B with T4X?

[doc at kd4e.com]

Oh, OK, yeah ... doubler x 1.414 ... sigh.

Guess I will spring for a rebuilt AC-3 and be done with it.

Thanks!

doc


> Bob, your e-mail is bouncing ...
>
> I just tried to send this direct with the hp-23 schematic.
>
>
> I just looked at the HP-23 schematic.
>
> Is that a voltage tripler, from 268 to 820 no load?
>
> What if it were changed to a doubler?
>
>
>>> You can build a 650-700 volt HV supply with 120/240 volt isolation
>>> transformer.
>>>
>>> 240 * 1.414 = 340
>>> 340 * 2 = 680
>>>
>>> You can buy these transformers from Allied, Mouser, and DigiKey.
>>>
>>> They are a viable solution to the problem.
>>>
>>> Bob Macklin
>>> K5MYJ
>>> Seattle, Wa.
>>> "Real Radios Glow In The Dark"
>>>
>>>
>>>> It looks as though the HP-23 matches the T4X *except*
>>>> for the HV.
>>>>
>>>> The HV says 820 No Load - anyone know what it is with
>>>> a load and if there is a fairly simple way to drop it
>>>> to 650?
>

-- 

Thanks! & 73, KD4E
David Colburn http://kd4e.com
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