Joule Thief

[innovation_station]

i like magic .. we gonna fly or grow plants fast !

now

im filling boost caps in  real time ..  SUPER HIGH SPEED ! 

like way toooooooooo   fast !

gadget ....  wanna have a chat ? 

got a gift 4 ya !

: )

ist!

[sparks]

  Was in a convenience store today and they were replacing flurescent A in a freezer compartment with leds enclosed in a mechanical enclosure that fits in the same space as flurescents.  The leds are what the young man called lazer diodes.  These are at the bottome of a reflective cone.  The units are manufactured by a company called Sloan .
The highvoltage "spikey" stuff is in the order of 500 volts.  I dont have the financial ability to purchase one of these fixtures but Jeanna's research came to mind so I report it here.  There are contracts by all major convenience stores to start replacing highpressure sodium and metal halide bulbs which are glorified carbon arc lamps with the diode lamp.
   This is a winner all around.  Thankyou for keeping it out there guys.  The world needs to know. 

Modify

     Flurescent bulbs have mercury vapor that is heated by accelerated electrons emitted by the filaments.  Mercury vapor and food storage just dont belong in the same sentence.  This is a wonderful example of applied technologies that has finally filtered down to the end users not sequestered due to paranoid military fools.

[crowclaw]

@ crowclaw

I think an even more interesting scope shot would be of the voltage across the collector coil on one channel and the voltage across the base coil on the other channel. This would show how the feed back works that turns the transistor on and off.

Xee2,
I'll set it up again and post the results for you, have got several projects on the go taking precedence at the moment... Kind Regards

[jeanna]

@Sparks,

That is indeed very gratifying as a start.
Thank you for the report.
Sometimes this does seem like a very steep hill we are climbing, and it is comforting to hear about this sort of evidence.

thank you,
jeanna

[resonanceman]

  Was in a convenience store today and they were replacing flurescent A in a freezer compartment with leds enclosed in a mechanical enclosure that fits in the same space as flurescents.  The leds are what the young man called lazer diodes.  These are at the bottome of a reflective cone.  The units are manufactured by a company called Sloan .
The highvoltage "spikey" stuff is in the order of 500 volts.  I dont have the financial ability to purchase one of these fixtures but Jeanna's research came to mind so I report it here.  There are contracts by all major convenience stores to start replacing highpressure sodium and metal halide bulbs which are glorified carbon arc lamps with the diode lamp.
   This is a winner all around.  Thankyou for keeping it out there guys.  The world needs to know. 

Modify

     Flurescent bulbs have mercury vapor that is heated by accelerated electrons emitted by the filaments.  Mercury vapor and food storage just dont belong in the same sentence.  This is a wonderful example of applied technologies that has finally filtered down to the end users not sequestered due to paranoid military fools.

Looks like this could be the company

http://www.sloanled.com/


gary