I'm wanting to build a few power regulators and boosters for several projects, and am trying to figure out what is most energy efficient. I intend for all to use standard "parts drawer^ components when possible.
One is a 48 volt .75 amp DC supply for a WIFI router (a really nice one!). I'm not sure why the cheapest capable supply I'm finding is $75 plus tax. ...but I do have a transformer I can get 60 volts from.
I also have several battery chargers. These will be run at a static voltage, 14.4 volt 1 Amp for VRLA batteries and 4.2 volt and between .5 amp and 1 amp for lithium cells. Most will pull from a car battery, but I'm also wanting to charge both batteries at a low rate from USB power (5 volt .5 amp to .9 amp max). I have thought about a joule thief for the booster, but I read it's not all that efficient. One boost will be 11 volts to 14.4 volts, which is minor. Also contenplating USB to 14.4 volts @ .1 amp.
What booster and regulators are the most effccient?
One is a 48 volt .75 amp DC supply for a WIFI router (a really nice one!). I'm not sure why the cheapest capable supply I'm finding is $75 plus tax. ...but I do have a transformer I can get 60 volts from.
I also have several battery chargers. These will be run at a static voltage, 14.4 volt 1 Amp for VRLA batteries and 4.2 volt and between .5 amp and 1 amp for lithium cells. Most will pull from a car battery, but I'm also wanting to charge both batteries at a low rate from USB power (5 volt .5 amp to .9 amp max). I have thought about a joule thief for the booster, but I read it's not all that efficient. One boost will be 11 volts to 14.4 volts, which is minor. Also contenplating USB to 14.4 volts @ .1 amp.
What booster and regulators are the most effccient?