Re: Function of component in flash tube trigger circuit?

I've now tried 2 xenon beacon tubes in series and it works every time on
full or reduced settings. Also works every time with the piezo gaslighter
when iys ground plate is connected to the flash unit ground

I was always told that the clap of thunder was due to air refilling the gap
after being punched through by the lightening plasma arc.
That cannot be the reason for the pop when such xenon tubes fire as there is
no air inside them , why the pop?

What sort of power coming out as light in both cases.
Unknown original tube of 10mm diameter , 200 mm long
2 beacon tubes 6mm diameter, 140mm combined length

Supply is from 2 seriesed 1000uF capacitors with 300V on each
The beacon tubes are rated for 250V min , 500V maximum, nominal 400V
maximum energy input per flash: 45W /second, maximum flash rate at maximum
input power: 100/min

There is strike defeat, while recovering, sub-circuit and recovery time is
about 1/3 sec, don't know what it is with the original tube.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




.

Relevant Pages

  • Re: At power on tube filaments light up more than normal for a sec
    ... "The "flash" is perfectly normal and it's a trademark characteristic of Mullard / Amperex tubes. ... in a conductor electricity does not 'flow at the speed of light' the net flow of electrons in a conductor is barely a few meters per second. ...
    (rec.audio.tubes)
  • Re: At power on tube filaments light up more than normal for a sec
    ... heatsinked inside the cathode section so the 'bare' part ... "The "flash" is perfectly normal and it's a trademark characteristic of Mullard / Amperex tubes. ... "The flash occurs on one side of the filament wires between the bottom plate and the inside bottom of the tube and this phenomenon only occurs when powering up from a cold start. ...
    (rec.audio.tubes)
  • Re: Adding headers to rockets
    ... The 3/4", being the same outer diameter of my rocket tubes, can ... The 1" tubes will slide tightly over a finished motor. ... Jumpin Jacks, more flash or stars, cheap whistle bottle rockets..etc. ...
    (rec.pyrotechnics)
  • Re: At power on tube filaments light up more than normal for a sec
    ... heatsinked inside the cathode section so the 'bare' part ... Mullard / Amperex tubes. ... flash but I'll discuss Mullard / Amperex tubes specifically since they are ... "The flash occurs on one side of the filament wires between the bottom plate ...
    (rec.audio.tubes)
  • Re: How to deavtivate moldy birdbangers?
    ... Watering flash powder in cases isn't a good idea i think.. ... God forbid anyone dig up burried tubes of flash, ... Place the items in the soapy water ... many of the class C items have plastic tubes in them and the thick ...
    (rec.pyrotechnics)