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Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
Could Microwave Oven capacitors be used in a voltage multiplier format beyond their single intended purpose? Could several MOC's together be used as a voltage multiplier for a very small NST? Do not NST's have a 60Hz frequency at their initial output?
--> Where I'm going with this is [at the primary in a Tesla coil] doesn't the (NST) frequency arrive at 60Hz? If that's so could a small group pf MOC's be used to jump up the initial input (prior to the MMC or what-have-you)? If we were to just to examine a "what if" phenomenon: could this setup be used to make a valuable voltage jump (Hell of a Jacob's Ladder - if not anything else that needed a voltage multiplier)? Isn't all input frequency stuck @ 60/50Hz until acted upon by the secondary in a Tesla application? I realize that the construction of the MOC is limited but what about using them prior to a MMC bank to bring up the voltage in a small (6.5Kv) NST? Haven't folks used the MMC concept in a SGTC & didn't that starting frequency begin @ 60Hz?
When I searched this subject I found some reasons why they could not be used alone in Tesla applications alone but there seemed no reasons they could not be used as a voltage multiplier, per se' (as one IS so used in a common kitchen application). - Why not a slightly larger multiplier? ....They seem such a good source: what am I missing? Is their construction so different from other caps that they would simply not stand up?..... Just as an aside, I tried using four of them on a MOT for a Jacob's Ladder and got one Hell of an arc however....the arc was tough to start and didn't seem to climb the way a NST arc does. Is this a phenomenon of the NST design alone? [Arc STARTING ability.]
Apologies about the blur of questions: I just get so much time to experiment and I just started searching the mailing list.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
quicksilver wrote ...
Apologies about the blur of questions: I just get so much time to experiment and I just started searching the mailing list.
Maybe it's because English is not my native language but I find some of your posts hard to understand.
ad Tesla coils: The frequency from the HV transformer "arrives" at 60Hz, but it's in the tank circuit where it resonates at a much larfer frequency. The mains transformer still outputs 60Hz even if the coil oscillates at hundreds of kHz.
ad Multiplier: Yes they can be used in multiplier as any other capacitors, their only drawback is that they contain bleeder resistor which might noticably lower output voltage in "long string" multipliers.
"Just as an aside, I tried using four of them on a MOT for a Jacob's Ladder and got one Hell of an arc however...." Wasn't this because of resonance? You see a lot of resonant arcs on Youtube and it can indeed multiply the arc lenght than with the transformer alone.
wrote ...
[Arc STARTING ability.]
Arc starting ability is entirely dependent on output voltage (if by that you mean the distance the arc strikes) and maybe frequency but that's only when it starts getting in the tens of kHz range. If you mean the distance it draws to, this is dependent on many factors including arc current, voltage, power supply's maximum power point, output characteristics (inductive/capacitive/resistive), frequency etc. etc.
Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
I apologize about the string of questions. And it's NOT your English. I think of a question and other related elements fill my thinking - then I try to squeeze them all into one query. My writing skills suck.
You hit it on the head with the aspects of characteristics: inductive/capacitive/resistive.... I didn't take that into account with the questions surrounding why certain arcs "climb".
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MOC's, Voltage Multipliers & Applications
