flhtci2006
- Feb 13, 2013
- 2
- Joined
- Feb 13, 2013
- Messages
- 2
I need a power supply to operate a 20W halogen bulb at ~ 3.3v, 4.5v and 6v. The three voltages allow for variable brightness of the bulb (used with a microscope). Any ideas?
Also, am I correct that a 20W load (the bulb) at 3.3V would pull ~6A? I ask as I found a power supply that puts out 3, 4.5 and 6 volts but is rated at 2A.
http://www.powersupplieswarehouse.com/mw-powersupply.html
Thanks
Also, am I correct that a 20W load (the bulb) at 3.3V would pull ~6A? I ask as I found a power supply that puts out 3, 4.5 and 6 volts but is rated at 2A.
http://www.powersupplieswarehouse.com/mw-powersupply.html
Thanks