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This schematic does not run, as uploaded. Andy explained why (.options lines split up). The "+" character at the start of a line, tells LTspice to append this line to the previous one. When these are

Hello All Richard Andrews wrote: The spark plug in a spark-ignition engine has a gap of about 0.020 inches, and the voltage required to initiate a spark across this gap is about 20,000 volts. The

Hello, I am trying to make overvoltage switch using ACST from STmicroelectronics but seems can't simulate its spice model. Any help will be appreciated. Please find all the files over here,

FYI - The LTC6268-10's input voltage range just reaches the V- supply pin but does not go below it even a little.? So it's taking a risk, having the negative supply pin grounded, with the +IN pin

When you have a command such as this on a schematic: .options cshunt=1e-14 + noopiter + gminsteps = 0 it is essential to have all three lines in the same SPICE Directive.? But in the schematic you

Tom wrote, "One should never use a gas tube protector across an AC or DC line. Once they fire they will not shut off unless the voltage/current drop below the sustaining level. " But with AC, doesn't

They are basically the same principle except the neon gas both lowers the trigger voltage and makes it predictable. Neon bulbs must operate within power limits while spark gap power is only limited by

Spark gaps are widely used for protection. The most common is the ceramic gas tube protectors for Telecom. They come in 2 and 3 lead versions. 3 lead used for balanced lines. In the old days, the gas

I would dare to suggest that a hot cathode emitter is probably more what the OP is wanting for an ion thruster than a spark gap. I always envisage an ion thruster as being like the cathode end of an

Thanks so much for the detailed explanation! I actually ended up switching to the LTC6268-10 and found that I'm able to actually get some semblance of a response from that opamp at my smallest pulse

The difference is gas pressure. Obviously, the spark gap has atmospheric pressure, about 100 000 Pa, but the pressure in a neon lamp is much lower: 100 Pa to 3000 Pa.

One thing I was never clear on, is the difference between a spark gaps and neon discharge lamps.? Are they the same principle?? They seem so widely different.? Spark gap discharge is very hot,

Maybe off topic, but there is some discussion of gas mixture in different neon lamps (many no longer made) in the 1965 GE Glow Lamp manual I mis-named earlier. There is some discussion of purpose of

Thanks John.

That law is about hot-cathode diodes and probably doesn't apply at all well to spark gaps. ====================================================================================== Best wishes John

In my studies I found this: The Child-Langmuir law is a differential equation that describes the current through a spark gap as a function of the voltage and the gap spacing.

Thanks for the further clarification of purpose. It's not enough to get any real purchase on the problem, but OK that's your business not mine. I'm just saying that the tolerances on real spark gaps,

Dave Bell the formula is Current * sqrt((2*Voltage*Mass)/Ce.

Do you mean that you are using the spark gap as an EHT voltmeter? LTspice will simulate a 1Gohm/volt conventional analogue peak voltmeter, which would seem to be simpler and more accurate.

This sounds like a very interesting project! Out of curiosity, how do you measure thrust with a spark gap? Dave Sent: Thursday, July 13, 2023 12:45 PM To: [email protected] Subject: EXTERNAL: Re: