eWatt Lightbulbs
 

Does anyone know how we could make a driver that could use something like a 9V battery to power the LED lightbulb like Dean Kamen had? This would be extremely useful for helping sell them.

Re: eWatt Lightbulbs
 

well an easy way to demo them would be to bring a robot battery hooked up to an inverter and power them inside a lamp.

you could also just bring a lamp and ask to plug it in wherever you are.

Re: eWatt Lightbulbs
 

I was thinking that it would be a great way to show the small energy usage.

Re: eWatt Lightbulbs
 

Spend the $20 for a Kill-A-Watt and take that with you, perhaps with a lamp, and a normal bulb to show the energy draw difference. I'd show it running off wall power. A battery will confuse people.

Re: eWatt Lightbulbs
 

9 volt "Transistor" battery is not capable of sourcing 7 watts:

http://www.powerstream.com/9V-Alkaline-tests.htm

Re: eWatt Lightbulbs
 

An inverter really is the only option unless you want to hack into one and remove the transformer and rectifier, or ask that they unscrew one of their lightbulbs for testing.