High voltage lamp ignitor module
Added 2023-06-02 05:18:39 +0000 UTCQuite an interesting module, and also quite complex to design.
In hindsight the snubber and unusually large resistor are probably to deal with the high voltage pulse that the module effectively gets from the ballast output.
It has to protect itself against that high voltage spike without attenuating it too much.
https://www.youtube.com/watch?v=j9beRSDqWbo
Comments
I just use butane to ignite my lamps.
Curtis Hoffmann
2023-06-03 10:29:19 +0000 UTCThank you - that's some useful info. I shall investigate the strangely anonymous device labelled Q1 near them!
Jon Knight
2023-06-02 21:02:26 +0000 UTCIf they're the sense resistors (connected between the transistor and negative rail). If they are it may point at failure of the main transistor.
Big Clive
2023-06-02 18:38:22 +0000 UTCI love these tear downs. What would be really interesting was a video showing how you do the PCB -> schematic with the coloured dots. I'm about to embark on something similar with a Mountfield Li-Ion garden tool charger that has a big sooty mark where some large SMD resistors used to be.... :-)
Jon Knight
2023-06-02 07:52:23 +0000 UTCI saw "High voltage lamp ignitor module" ..... too good to be true, Clive plays with Coleman lanterns.. but alas.. Somewhere on my equally cluttered desk, I ha the remains of a Coleman HV lamp ignitor.. still has enough pixies in it to make you jump..!
Evan Jones
2023-06-02 07:45:48 +0000 UTCAll the girls run from my big fat juicy resistor... as well they should.
Russell Levine
2023-06-02 06:14:03 +0000 UTC
