cb377760@longs.LANCE.ColoState.EDU (Curtis Brown) (03/03/91)
Everybody's talking about reducing 12 volt automotive power to useable 9 volt power. What are some ideas about raising 12 volts to 15 volts? ------------------------------------------------------- Curtis Brown self-claimed EE student cb377760@longs.LANCE.ColoState.Edu "So THAT'S what an invisible force field looks like!" -------------------------------------------------------
tomb@hplsla.HP.COM (Tom Bruhns) (03/07/91)
> What are some ideas about raising 12 volts to 15 volts?
Try a switching regulator. National's new line includes one that does
step-ups. You can also fairly easily build your own, using more parts.
One difficulty is if the 12 volts gets too close to 15 (as in _above_
15), in the typical step-up switcher you end up with problems because
the input ends up unattenuated at the output...but there are other
topologies that work.