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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Yeah, it really should be replaced as the lights sometimes flicker on the front panel when cooking.
Apparently some MW magnetrons can output double their rated power if the MOT is replaced by several 32" LCD CCFL transformers with ZVS's on their primaries.
EDIT:- Laptop lost its audio, restarted and seems fine now.
EDIT 2 :- "I remember when i was first playing with high voltage. with some double transistor driver. the more i draw a arc. The brighter my room gets. I think it's releated to my cfls. "
That shouldn't happen. Best guess is that the CFL's are synchronising to your oscillator and thus affecting the normal operating frequency which changes the power draw and so the brightness.
EDIT 3:- I managed to do a test on CCFL with 9V batteries and noticed a proximity effect, seems that in conditions of low AC power the proximity of a hand or metal object to the tube affects the brightness a bit like on a plasma globe. I attribute this to changes in plasma geometry within the discharge causing bright spots which gives the illusion of an increase in overall brightness.
Registered Member #9252
Joined: Fri Jan 04 2013, 06:27AM
Location: Andromeda
Posts: 253
Also i was running the cfl driver just for the hell of it a few mins ago. and noticed when i touch the large red wire from the FBT. and remove my hand from it and touch the ground wire of the fbt i shoot sparks. like a capacitor.
Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
A few amusing things from the past...
When I used to mess around with SSTCs downstairs in the garage at my parents house, the touch sensitive lights in my parents bedroom would turn on, then randomly cycle through their brightness levels. Odd thing was, the lights were a very long way away from the experimental madness in the garage.
Once after a session of playing around with an ignition coil on my computer desk, I noticed that my monitor had gone mad - the on screen display had come up, and the usual button presses to cycle through the options and eventually close it now had a delay of several seconds after each button press.
More recently, at work, I managed to get over 100VDC onto several pins of a large microcontroller in a three phase inverter. It blew a hole in the microcontroller. When I powered the board back on, it booted up as normal and I got debug information out of the serial port however, no PWM from the partly exploded micro ever again!
Registered Member #53
Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
I'm not sure if the brand matters but you should be able to get any cfl to flicker by rubbing it on an already staticy surface (laundry from the dryer might be a good start).
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Someone should market "Plasma Balloons" filled with He/Xe/Ne mix and double encapsulated for long life. Easy enough to ship and can be self supporting.
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however, no PWM from the partly exploded micro ever again!
