Search found 485 matches: +voltage +safety

Searched query: +voltage +safety

by Nicolas Krause
Thu Jan 14, 2021 6:39 pm
Forum: Vacuum Technology (& FAQs)
Topic: DIY Turbopump Controller
Replies: 16
Views: 743

DIY Turbopump Controller

... a maximum of 45W of power or 64VA. Given that it also specs that the voltage for each phase of the motor is 150V I've calculated the max current as 64VA/(1.73*150V)=246mA. So with a bit of a safety buffer a 200V supply that can also give up to 300mA of current should be ...
by Nicolas Krause
Wed Jan 06, 2021 4:44 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: High Voltage Probe
Replies: 3
Views: 443

High Voltage Probe

... Over fall reading break I threw together a pcb in KiCad for a high voltage probe. It's nothing too complicated, just the usual string of resistors ... putting it in a piece of pvc tubing filled with parafin wax to improve safety. IMG_1467[1].JPG
by ChristofferBraestrup
Fri Nov 13, 2020 1:09 pm
Forum: Images du Jour
Topic: Signal recovery/analysis system
Replies: 4
Views: 964

Signal recovery/analysis system

... X-Y chart recorder, and below the NIM bin is an Oxord Cryosystems slow voltage sweep generator (electromechanical! Litterally a motor and gearbox ... pirani/penning gauge drivers, vent solenoid drivers, data-logging, and safety interlocks, or this should go in its own rack. SRRACK1.jpg SRRACK ...
by Rich Feldman
Thu Nov 12, 2020 6:47 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Grounding - neutral wire or grounding pin
Replies: 7
Views: 1671

Re: Grounding - neutral wire or grounding pin

There are two safety reasons why the grounding pin of every receptacle needs an intentional metallic ... between "hot" conductor and the metal case. 1. Grounding path should keep the case voltage safely low. A 10 ohm or even 1 ohm salted earth connection can't do that. (note ...
by SamKothe
Thu Nov 12, 2020 12:02 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low current, high voltage safety
Replies: 4
Views: 705

Re: Low current, high voltage safety

Thank you all so much, this is exactly what I wanted to know.
I'll be sure to be very safe and if possible find an alternative to a high voltage.
-Sam
by John Futter
Wed Nov 11, 2020 4:24 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low current, high voltage safety
Replies: 4
Views: 705

Re: Low current, high voltage safety

Sam Even these little supplies are lethal if used with an output capacitor And by this I mean capacitance such as maybe you using a coax cable ie about 30pf per foot not including the capacitance of the last multiplier output stage to connect with all of these will give a very nasty current spike th...
by Frank Sanns
Wed Nov 11, 2020 3:21 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low current, high voltage safety
Replies: 4
Views: 705

Re: Low current, high voltage safety

You would not want to grab both leads. While there is probably not enough power to stop your heart, you will get a very big surprise. It will bite and bite you hard because at 5KV, that current will flow through your body and it will not be pleasant.
by SamKothe
Wed Nov 11, 2020 2:21 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low current, high voltage safety
Replies: 4
Views: 705

Re: Low current, high voltage safety

I figure if I put a 14.4 ohm resistor in series with the power supply (12V) and the high voltage generator's input the power would be limited to 10 watts, in case the high voltage generator does not have built in protection.
by SamKothe
Wed Nov 11, 2020 12:42 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Low current, high voltage safety
Replies: 4
Views: 705

Low current, high voltage safety

Hi everyone, I'm working on a project necessitating high voltages (4-5kVDC) at comparatively low current (1-2mA). There are these high voltage DC/DC converters (https://www.mouser.com/ProductDetail/XP-Power/F50?qs=w%2Fv1CP2dgqp9eWErQLdwfA%3D%3D) that ...
by Dennis P Brown
Sat Nov 07, 2020 10:50 am
Forum: FAQs: Fusor Construction & Operation
Topic: FAQ - How to boost fusion in operation - Wall loading and cooling
Replies: 16
Views: 1393

Re: FAQ - How to boost fusion in operation - Wall loading and cooling

... than any other coolant; an excellent insulator relative to high voltage, and both easy to obtain and inexpensive. The ideal coolant media. ... is very explosive. So proper plumbing (no leakages) is essential for safety.