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RE: vacuum pump AND Tesla Coils
From: TimRaney-at-aol-dot-com[SMTP:TimRaney-at-aol-dot-com]
Sent: Wednesday, July 16, 1997 2:14 PM
To: tesla-at-poodle.pupman-dot-com
Subject: Re: vacuum pump AND Tesla Coils
Folks, this didn't make the list the first go around (server problems?), but
I think it's still pertinent to the discussion and includes comments on using
Tesla coils to energize discharge tubes. TIM
In a message dated 97-07-12 19:47:33 EDT, Tim Raney writes:
<< Subj: Re: vacuum pump
Date: 97-07-12 19:47:33 EDT
From: Tim Raney
To: tesla-at-pupman-dot-com
Doug (and All):
"Microns" are another way of saying "thousandths of a millimeter of Hg."
One Torr equals one millimeter of Hg and a milliTorr (mTorr) is a more
current way of expressing "microns." If you can pump down to 25 microns, you
can do most of the classic discharge tube experiments using a HV DC power
supply or a Tesla oscillator. Most folks overlook the interesting discharge
tube effects you can observe by using a HV AC source, i.e., 9 to 15KV neon
sign transformer or a small (under 1KW output) Tesla oscillator.
The vacuum pump you mentioned is normally used in the refrigeration industry
for evacuating the system prior to recharging with a refrigerant. You can do
a lot of stuff with the pump you have. A good basic text available through
Lindsey Publications is "An Experimenter's Introduction to Vacuum
Technology," by Steve Hansen. Steve is the editor of "the Bell Jar" and
believe he's either on this list or the "HV List." He's got a web site with
a lot of vacuum-related information that is worth checking out.
I've done some simple experiments using discharge tubes with a Tesla coil or
HV AC source and produced plasma beams at pressures around 20 Torr (20 mm Hg)
and subjected these beams to magnetic fields. Fun to watch!! Hope this
helps.....you can do a lot more than just pump down capacitors.
TIMOTHY RANEY, TCBOR >>
---------------------
Forwarded message:
Subj: Re: vacuum pump
Date: 97-07-12 19:47:33 EDT
From: Tim Raney
To: tesla-at-pupman-dot-com
Doug (and All):
"Microns" are another way of saying "thousandths of a millimeter of Hg." One
Torr equals one millimeter of Hg and a milliTorr (mTorr) is a more current
way of expressing "microns." If you can pump down to 25 microns, you can do
most of the classic discharge tube experiments using a HV DC power supply or
a Tesla oscillator. Most folks overlook the interesting discharge tube
effects you can observe by using a HV AC source, i.e., 9 to 15KV neon sign
transformer or a small (under 1KW output) Tesla oscillator.
The vacuum pump you mentioned is normally used in the refrigeration industry
for evacuating the system prior to recharging with a refrigerant. You can do
a lot of stuff with the pump you have. A good basic text available through
Lindsey Publications is "An Experimenter's Introduction to Vacuum
Technology," by Steve Hansen. Steve is the editor of "the Bell Jar" and
believe he's either on this list or the "HV List." He's got a web site with
a lot of vacuum-related information that is worth checking out.
I've done some simple experiments using discharge tubes with a Tesla coil or
HV AC source and produced plasma beams at pressures around 20 Torr (20 mm Hg)
and subjected these beams to magnetic fields. Fun to watch!! Hope this
helps.....you can do a lot more than just pump down capacitors.
TIMOTHY RANEY, TCBOR