Search found 63 matches

by Joshua Guertler
Mon Jan 20, 2020 7:05 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Help Finding a Transformer Core Part
Replies: 5
Views: 279

Re: Help Finding a Transformer Core Part

Greetings,

Thank you for getting back to be on the matter. It's truly an unfortunate incident, however I'm doing my best to make it right for the buyer.

The metal is about 0.014" thick, 1 5/16" wide, and 2 15/16" long. Thank you.

Sincerely,
Joshua Guertler
by Joshua Guertler
Sun Jan 19, 2020 8:17 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Help Finding a Transformer Core Part
Replies: 5
Views: 279

Help Finding a Transformer Core Part

Greetings, A few minutes ago I received the dreaded email from someone who bought my old x-ray transformer saying that he received it in shambles. By the looks of it, USPS gave it the old beat down, so much do that the actual box itself broke open during shipping. Fortunately, the core itself is pre...
by Joshua Guertler
Mon Jan 13, 2020 10:26 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Neon sign transformer power: a new look
Replies: 25
Views: 10231

Re: Neon sign transformer power: a new look

Greetings,

I recently got a 9 kV 30 mA NST with an internal resistance of 9.07k Ohms (not running). If I use a similar set up, what voltage output should I be expected, assuming that the current is roughly 20 mA? Thank you.

Sincerely,
Joshua Guertler
by Joshua Guertler
Fri Jan 10, 2020 6:40 pm
Forum: Items wanted
Topic: 0-200 V, 200 V Pulsed Power Supply Units
Replies: 2
Views: 289

0-200 V, 200 V Pulsed Power Supply Units

Greetings, I've been looking for a couple of power supplies to bias and power my thyratron for my fusor. Unfortunately, the thyratron is quite old and requires some relatively obscure power supply units. I was curious if anyone would happen to have and be will to sell the following items: 0-200 VDC ...
by Joshua Guertler
Fri Jan 10, 2020 1:22 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Neon sign transformer power: a new look
Replies: 25
Views: 10231

Re: Neon sign transformer power: a new look

Greetings,

If I find an NST that is secondary midpoint grounded, would I be able to cut the ground on the secondary to make it operate in a way more desirable for this set up? Thank you.
by Joshua Guertler
Wed Jan 08, 2020 4:26 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Neon sign transformer power: a new look
Replies: 25
Views: 10231

Re: Neon sign transformer power: a new look

Greetings, Thank you very much for your advice and contribution, Mr. Feldman. Out of curiosity, would the following set up work safely? It's a slight modification to better fit my system, where the capacitor is connected to a grounded load. Thank you. https://docs.google.com/drawings/d/1UQy425Cb1DnX...
by Joshua Guertler
Sun Jan 05, 2020 8:22 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Neon sign transformer power: a new look
Replies: 25
Views: 10231

Re: Neon sign transformer power: a new look

Greetings, Thank you very much for the model, it will certainly be very useful in the near future. Out of curiosity, what is R1 and RL for and if they represent a part built into the transformer. Also, if one were to build the circuit, would it be better to go with a full wave rectifier design? Than...
by Joshua Guertler
Sun Jan 05, 2020 12:55 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Simplified Deuterium System Drawing/Schematic
Replies: 6
Views: 302

Re: Simplified Deuterium System Drawing/Schematic

Greetings Mr. Hull, I agree with the general premise of your point about its capabilities for low-budget fusors, however I would like to echo the sentiments of Mr. Rowley. These sorts of PEM cells have historically run quite well (in different set ups, granted) with fusors in the several hundred tho...
by Joshua Guertler
Sat Jan 04, 2020 8:22 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Simplified Deuterium System Drawing/Schematic
Replies: 6
Views: 302

Simplified Deuterium System Drawing/Schematic

Greetings all, Unsurprisingly, the deuterium system can be the costliest - and most restrictive - component of a fusor for a high school or college student looking to make a garage fusor, coming in at around $500 for gas, regulators, and containers. Moreover, international builders are confronted by...
by Joshua Guertler
Thu Jan 02, 2020 10:22 pm
Forum: Items wanted
Topic: 10 kV 100 W Power Supply
Replies: 6
Views: 317

Re: 10 kV 100 W Power Supply

Greetings, The 12 kV 35 mA (give or take 5 mA) will provide steady state power to a capacitor bank with a total capacitance of 0.0555... uF, leading to a time constant (for 99%) of roughly 0.1 seconds. An inductor is also used to help govern the pulse width of the pulsed power. A deuterium thyratron...