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Re: safety/current limiting,ect?

... and grid design primarily control grid amp draw it would be a good safety margin obviously the voltage you are going to run at would also affect the ballasting cheers colin
by guest
Sat Nov 02, 2002 4:56 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: safety/current limiting,ect?
Replies: 6
Views: 1964

Re: power supply question

... If your variac does more than 110v then calculate the new high at that voltage. You will have to figure the turns ratio for that trani. The power ... possible when setting up your diode string and use a few extras for a safety factor. Larry Leins Fusion Tech
by guest
Thu Oct 10, 2002 2:12 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: power supply question
Replies: 2
Views: 1367

Re: pulsed fusor power issues

... be used that way, but the main concern is to increase the operating voltage and raise the crossection of fusion without building really hairy ... grid the onerous chore of a ultra high voltage feed thru is avoided. Safety would be easier due to the fact that the other end would be tied to ...
by guest
Sun Sep 01, 2002 1:24 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: pulsed fusor power issues
Replies: 16
Views: 2961

Re: Power Costs

... the load demands. In this case a total of 10uf @ 80kv (for a margin of safety) A large choke or huge current limiter resistor with a rating of at ... his old supply from a junk yard and killing himself with it. A high voltage, high current supply which would be of a modern switcher type with ...
by Richard Hull
Thu Jul 11, 2002 2:47 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Power Costs
Replies: 3
Views: 2166

FAQ: Measuring Fusor Current

... like a neon sign transformer with two rectifiers for fullwave, half voltage rectification, you MUST NOT ground the case directly, but instead ... level system. Reading the system current in a manner which retains full safety grounding is ultra important. Farnsworth's team at ITT measured their ...
by Richard Hull
Thu Jun 27, 2002 3:36 pm
Forum: FAQs: High Voltage
Topic: FAQ: Measuring Fusor Current
Replies: 2
Views: 3565

Re: HV transformers

Mark: A lot of our surfing buddies out there are voltage virgins. You have to spell it out for them. Fuses would probably would ... out the hazard. But the setup of a mini substation would take conciderable safety measures. I plan to enclose my capacitor bank and high voltage behind a ...
by guest
Mon Jun 24, 2002 1:33 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: HV transformers
Replies: 10
Views: 3667


... advice for all who would work with a fusor. Fusor's all require high voltage at moderate to high currents inorder to function. At any voltage, ... from casual or accidental contact by anyone coming near the device. Safety interlocks, key switch operation, remote disconnect fail-safes are ...
by Richard Hull
Fri Jun 21, 2002 4:18 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Replies: 2
Views: 2113

Re: HV Meter Tutorial

Couple of Safety points here. 1. When using analog meters for HV measurements, it is always a good ... across the meter terminals. The MOV is essentially an open circuit below its breakdown voltage and a reasonably low resistance to voltages above its breakdown value. This will ...
by DaveC
Sun May 05, 2002 5:50 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: HV Meter tutorial
Replies: 5
Views: 1745

Scintillator tests

... This consists of an EMI PMT with mated preamp and dynode string. The voltage applied was +900 volts from a precision Tennelec NIM regulated HV ... and the knownledge to construct such a device. Most of all, the safety concerns are severe and slipups by rank amateurs can result in crippling, ...
by Richard Hull
Mon Apr 01, 2002 6:30 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Scintillator tests
Replies: 11
Views: 2708

Re: Attension Walmart Shoppers-cheap hv supplies

... to make, just take a bunch of diodes count them and divide the desired voltage by the number of diodes. Make sure that you have a twenty percent or more safety margin on the rated voltage. The board must be a fiberglass resin boards like aircraft ...
by guest
Thu Feb 07, 2002 9:20 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Attension Walmart Shoppers-cheap hv supplies
Replies: 6
Views: 2030

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