Re: Update on level shifter problem

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "J. B. Weazle McCreath by way of Terry Fritz <twftesla-at-uswest-dot-net>" <weazle-at-hurontel.on.ca>


At 08:52 PM 03/02/01 -0700, you wrote:
>
>Original poster: "Dr. Duncan Cadd by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <dunckx-at-freeuk-dot-com>
>
>Hi Weazle, Deano, Dave et al!
>
>Date: 03 February 2001 04:46
>Subject: Update on level shifter problem
>
>This is indeed bizarre.
>
>I assume that you're using the standard 1 uF or so caps from
>the original ovens?  If so, barring a defective cap, I'm at
>a bit of a loss.

YUP, THE CAPACITORS CAME WITH THE TRANSFORMERS & DIODES.

>
>If not, and if the caps aren't defective in some way, the
>only thing which comes to mind is that the ratio between the
>values of the caps in the rectifier circuitry and the total
>tank capacitance may be too low, but it hardly seems likely.
>Sounds as if you measured the output without the tank
>connected anyway.

I HAD JUST A MOCK UP OF A PRIMARY CIRCUIT.  A HELIX OF 28
TURNS OF NO. 10 WIRE, 5" LONG & 2" IN DIAMETER, A 3.6 nF.
CAPACITOR, AND A SINGLE STATIC GAP.
 
>
>Does removing the filter caps make any difference?
>Doorknobs have been known to die before now (as the old
>saying doesn't quite go ;-)

THE FILTER CIRCUIT TESTS OK WITH A PAIR OF OBITS AND THE
ABOVE MENTIONED PRIMARY MOCK UP.

>
>Dunckx
>

I'LL KEEP PLUGGIN' AWAY AT IT.  THANKS FOR THE SUGGESTIONS.



73, Weazle, VE3EAR/VE3WZL

Listening: 147.030+ and 442.075+
E-mail:    weazle-at-hurontel.on.ca
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