[Prev][Next][Index][Thread]
Tips for Tesla-ers
From: Robert Michaels[SMTP:robert.michaels-at-online.sme-dot-org]
Sent: Sunday, September 07, 1997 8:47 AM
To: tesla-at-pupman-dot-com
Subject: Tips for Tesla-ers
The August, 1997 issue of the U.S.A. publication "Popular
Electronics" (vol. 14, no.8) has a few simple circuits which
may be interest to those on This List:
The items are part of a regular feature called "Circuit Circus"
which is on page 67 of the subject issue.
Item - 1 Might be called a poor-man's substitute for a
-------- variable transformer ("Variac"). It's a series-
parallel combination of light bulbs which are added and
subtracted from the load circuit by means of several switches.
Item - 2 Is an idea for using a real variable transformer
-------- in combination with a switched-light bulb used as
ballast to give a higher level of control where the applica-
tion of power to a load might cause unpredictable behavior.
Item - 3 Is a simple tester for detecting shorted turns
-------- in a transformer. A neon lamp is connected
across the transformer under test and a comparatively low-
voltage pulse is applied. If there are no shorted turns,
the inductive kick from the pulse will flash the neon lamp.
Note that this is useful in testing neon-sign transformers
and possibly Tesla secondaries as well.
Half coping, half hoping,
in -- Detroit, USA
Robert Michaels