[HomeBrew] series light tester info needed

Tue, 21 Jan 2003 21:21:09 -0800

Hi Will;

I made one by taking a standard duplex outlet and breaking off the tab
between the two brass screws. I put it in a surface mount outlet box with
a cover. Then I wired a line cord to the two brass screws. I got several
adapters from a building supply store. The kind that plug into an outlet
and you can screw a light bulb in them. I put a 60 watt, 100 watt and a
150 watt bulb in them. Plug the radio into one outlet and the adapter in
the other one. They will be in series. I start with the 60 watt and
monitor the B+. when it stops rising I change to the 100 watt. When B+
stops rising again I go to the 150 watt. Finally, I go directly to the
line. I use a voltage reducer for tube-type radios as most of them were
designed when the line voltage was 115-117, not today's 122 VAC. You can
find how to make a voltage reducer on the BAMA home page, about 1/2 way
down. Good Luck

73,

Ed Richards

On Tue, 21 Jan 2003 17:40:08 -0800 (PST) Will <[email protected]>
writes:
> ** Please do NOT cross-post messages to multiple mailing lists on the 
> "To:" or "CC:" line of the e-mail message. **
> 
> Can't find the schematic for a series light tester in any of my 
> radio books, nor by searching under that designation on the web. 
> 
> I need just the briefest description of how to construct and use 
> said device, the kind of tester (sort of like a kludg-ey Variac)that 
> accomplishes the purpose of gradually applying higher and higher 
> voltage to a radio or other appliance of unknown condition, by means 
> of increasing (decreasing?) the wattage of a light bulb used in 
> series with the thing being tested. Thanks much!
> 
> DE WILL/KD7BFX
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