Re: Test equipment

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

Original poster: "Scott Hanson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <huil888-at-surfside-dot-net>

Ken -

Ummm .... I respectfully disagree, although it may be a manner of semantics.
I deal with a lot of different test equipment, and have yet to see any
instrument that the manufacturer actually called an "audio signal generator"
that had an upper frequency limit that extended very far beyond the limit of
detection by the human ear (around 20 kHz).

On the other hand, almost every instrument that the manufacturer identified
as a "test oscillator", "signal generator" or "function generator" had a
range from tens or hundreds of Hz to hundreds of kHz and well into the MHz
range for later instruments.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, December 15, 2002 9:04 AM
Subject: Re: Test equipment


 > Original poster: "Crow Leader by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<tesla-at-lists.symmetric-dot-net>
 >
 > Quite a few "audio generators" go into the high kHz or even MHz range.
 >
 > KEN
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Saturday, December 14, 2002 2:40 PM
 > Subject: Re: Test equipment
 >
 >
 >  > Original poster: "Scott Hanson by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
 > <huil888-at-surfside-dot-net>
 >  >
 >  > John -
 >  >
 >  > Of course, an "audio signal generator" won't do you any good for Tesla
 > coil
 >  > use. You need an RF signal generator, most of which have enough range
to
 >  > cover the audio frequencies.
 >  >
 >  > Typical Tesla coil operating frequencies are as low as 60 kHz for very
 > large
 >  > coils, to around a megahertz for very small coils. You'll want a
generator
 >  > that covers this range.
 >  >
 >  > There are many test oscillators and function generators from many
 > different
 >  > manufacturers available on the surplus market.The Hewlett Packard 651
 > series
 >  > test oscillators are excellent for Tesla coil tuning work, and can
 >  > frequently be found surplus or on eBay for very reasonable prices. This
is
 >  > an older series solid-state oscillator, but the large tuning dial is
much
 >  > easier to use than later, smaller H-P units like the 3312A series
function
 >  > generators.
 >  >
 >  > Although an LCR meter is nice to have, an oscilloscope is much more
useful
 >  > for Tesla coil tuning. Without a 'scope, the RF oscillator alone isn't
of
 >  > much use. I'd suggest looking for a nice clean used 100 MHz scope to
 >  > complement your signal generator.
 >  >
 >  > Scott Hanson
 >  > ----- Original Message -----
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > To: <tesla-at-pupman-dot-com>
 >  > Sent: Saturday, December 14, 2002 8:49 AM
 >  > Subject: Test equipment
 >  >
 >  >
 >  >  > Original poster: "John Richardson by way of Terry Fritz
 >  > <twftesla-at-qwest-dot-net>" <jprich-at-up-dot-net>
 >  >  >
 >  >  > Hi Everyone,
 >  >  >
 >  >  > I am looking for a few items for the "Basement Lab", and figured I
 > would
 >  >  > try here.  First, I am looking for an older audio signal generator,
 >  >  > preferably an old tuber HP, since everyone I have talked to says
this
 > is
 >  >  > the best to use for secondary testing.  I also lost an e-Bay bid on
a
 > 60's
 >  >  > vintage ESI 250 LCR bridge, the type with the "magic eye", and am
 > looking
 >  >  > for similar or same.  If anyone happens to have one or both of these
 >  > items,
 >  >  > please contact me off list, or if you know of someone who does have,
 >  > please
 >  >  > let me know.
 >  >  >
 >  >  > Thanks,
 >  >  >
 >  >  > John Richardson
 >  >  > <mailto:jprich-at-up-dot-net>jprich-at-up-dot-net
 >  >  >
 >  >  > BTW-Franceformer 4/20 on e-Bay for you mini-coil competitors.
 >  >  >
 >