Rotary and pig testing
After we talked last night, I did some more testing. I can get a good jacobs
ladder with the pig transformer by using resistive loading only. Using a
2000W heater the ladder works and I get 10A primary current. Using about
5000W I get about 27A primary current and a nice hot arc on the ladder. The
arc does go up the ladder and it is hot. If I run it too long the brass rods
get so hot they start to fall over. I think the pig is working fine.
As I mentioned, I ran the rotary with two 12kv 30ma neons and the rotary
works good. Limited to 10,000V I get about 20" discharges. So the rotary
and the pig are both ok.
Next I connected the pig back up to the coil with 7000W of resistive load and
the welder out of the circuit. Using the rotary gap only I do get consistent
firing. Limited to about 10,000V I get 10A of primary current and about 20"
discharges. Since I'm now supplying about 150ma of current to the coil
primary circuit I would expect to get much better performance than I had with
the two 12kv 30 ma neons. Do you have any ideas?
I also tried the same setup only with a static gap in series with the rotary.
The performance was not as good.
When doing this testing, sometimes I hear a loud pop from the rotary. I
don't know what is causing this.
So far, I still have had much better performance with a 12kv 120ma neon power
supply than with the new pig. This thing is indeed difficult to figure out.
Can you give me a detailed description of your setup? Rotary, static gap,
welder, resistive loads, etc. At what variac setting does everything start
to work well? My pig should put out 14,400v but I have never had it up over
10,000v when connected to the coil.
Thanks, Ed Sonderman