Re: Test equipment

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

Original poster: "Crow Leader by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>

I use a Leader LAG-120B. It's clearly marked "Audio Generator" and sold for
testing audio equipment, and goes to 1MHz. Their LAG-126 is good to 500kHz
and sold for the same purpose. The LAG-120 or 120B is a very common item,
and if you don't want some WWII tube monster, this might be something to
grab if you can find used.

http://energybeam-dot-com/tesla-coil/08-27-2002/Krodak-Leader-fun.jpg


KEN

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, December 15, 2002 2:04 PM
Subject: Re: Test equipment


 > 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.
 >  >  >  >
 >  >
 >
 >
 >