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@Mike, nice retirement job, much appreciated by many. I did a similar thing, a charged inductor that spikes into a capacitor, to make a big "ping" at the LC frequency, it was driving an ultrasonic

It’s still in a restricted beta. Google QSPICE to find the signup site.

Recovery time is also dependent on the recombination time for the gaseous ions involved not just on the circuit time constants. Recombination times are typically in the order of ten microseconds or

Well, who'd have thought... Out of the blue, I received an invitation to be a beta tester this evening. ? -- Regards, Tony

Is the QuickSpice good for downlaod & use? ________________________________ Sent: Wednesday, July 12, 2023 2:31 PM To: [email protected] <[email protected]> Subject: Re: [LTspice] Spark gap physics.

Gap geometry affects the field strength for a given gap width. With infinite plane parallel electrodes the voltage required to achieve the critical field strength is proportional to the electrode

yep. LTspice was my retirement job

hi eewiz Thanks for the help.. Some user info- All controlled cmp files have a fixed name of "MYstandard.xxx" where .xxx=.bjt, .dio, etc. The script is currently hard configured: 1. All user cmp

Wow, locating hydrocarbon's!

I am thinking now I'll have to use e (elementary charge), calculate the number of atoms for the direct path of the gap, use Paschen's voltage and do some magic with them.

I've had very good luck modeling a spark gap as a switch in series with 20V drop in each direction.? The test case was a parallel tank circuit(about 10uF capacitance at 2.5KV and 10uH inductance)

I'm not sure what you mean there, I think the arc, or the detection event in a GM tube can be considered 'low' resistance. I'd like to re-establish credentials as to why we're discussing this on

Just a thought, I was thinking the resistance drops non-linearly and what ever the source can supply is the current.

Oh sorry. Uploaded again.

Your zip contains filt.sub and filter.asy, but your model is looking for filter.sub Sent: Wednesday, July 12, 2023 9:07 AM To: [email protected] Subject: EXTERNAL: Re: [LTspice] Filters (Butterworth,

Understood, he's using the neon as a G-M tube, but the common G-M circuit already addresses the issue very simply.? G-M tube capacitance is about 5pF, the neons I've just measured are under 1pF, so

I uploaded my filter attempt to the file section. Hope all is self contained and it works. Anything to correct? — Christoph

Bonkers, " It is possible that the high current pulse when the bulb triggers is responsible for some of the chaotic behavior.? In order to remove the effects of the high current spike when the lamp

no probs - and yeah, don't know why he's using a couple of transistors, a very high value resistor is all that is used for G-M tubes. The high voltage ensures avalanche multiplication, and the low

Bordodynov, My subcircuit and symbol ( /g/LTspice/files/Temp/paschens-spark_gap.zip )