Search found 385 matches

by ian_krase
Fri Jan 19, 2018 9:11 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Has anyone used the Spellman X3000 50V-30kV 400uA Rev E7 24Vdc
Replies: 2
Views: 58

Re: Has anyone used the Spellman X3000 50V-30kV 400uA Rev E7 24Vdc

400 uA is not enough for a fusor by almost anybody's estimation, though it might be enough for an accelerator.
by ian_krase
Fri Jan 19, 2018 5:17 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: High Voltage Supply for PMT
Replies: 9
Views: 184

Re: High Voltage Supply for PMT

How were you feedbacking it?
by ian_krase
Fri Jan 19, 2018 5:01 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: New pulsotron production line
Replies: 6
Views: 158

Re: New pulsotron production line

This guy showed off some actual hardware in the past, though I'm not clear on what it actually did.

I'm not really understanding what they're selling -- as far as I can tell, it's only a component (not the whole thing) of a large MCF fusion machine?
by ian_krase
Thu Jan 18, 2018 5:26 am
Forum: Images du Jour
Topic: My Attempt at a DIY Ionization Gauge
Replies: 5
Views: 253

Re: My Attempt at a DIY Ionization Gauge

Yeah, this is mostly not so much meant as an experiment in metrology as a way to practice ion sources. An ion gun will come later.
by ian_krase
Thu Jan 18, 2018 3:52 am
Forum: The Trading Post
Topic: HV Cable for Spellman DXM30N600X4215 30kV 20mA
Replies: 5
Views: 120

Re: HV Cable for Spellman DXM30N600X4215 30kV 20mA

I'm pretty sure you're going to be getting out the machine tools here.
by ian_krase
Wed Jan 17, 2018 8:29 am
Forum: Images du Jour
Topic: My Attempt at a DIY Ionization Gauge
Replies: 5
Views: 253

Re: My Attempt at a DIY Ionization Gauge

It works! Collector at ground, grid at about +28V, filament biased to between +2V and +5V to prevent electrons from hitting the collector. The exact filament bias voltage needs to be adjusted to zero the gauge. Filament emission current is about 70 microamperes. Collector current is read out on the ...
by ian_krase
Wed Jan 17, 2018 7:52 am
Forum: The Trading Post
Topic: Does anybody want 40kv wire?
Replies: 2
Views: 138

Re: Does anybody want 40kv wire?

Not certain, would need to check. Approximately 18 AWG with insulation that brings the OD to about 9mm. Pretty flexible.
by ian_krase
Sat Jan 13, 2018 3:11 am
Forum: The Trading Post
Topic: Vacuum Throttle Valve
Replies: 9
Views: 292

Re: Vacuum Throttle Valve

Conflat is normally measured by the OD of the flange in inches.
by ian_krase
Thu Jan 11, 2018 3:11 am
Forum: The Trading Post
Topic: Does anybody want 40kv wire?
Replies: 2
Views: 138

Does anybody want 40kv wire?

I have a source of 40kv insulated wire. Can sell 10 foot sections for $15 plus postage.
by ian_krase
Wed Jan 10, 2018 8:56 pm
Forum: Vacuum Technology (& FAQs)
Topic: cheap solenoid valve
Replies: 3
Views: 141

Re: cheap solenoid valve

Almost certainly requires high pressure in one direction to make the valve open. Not really useful for vacuum.