I'm running into a problem w/ power control for a high-current system: basically I would like to have a battery back-up to step in & power the system when it is unplugged from the wall. The system draws a maximum 100a for a one sec. pulse...I'm looking for something that can either use two batteries, so when one is charged, the other discharges -- OR some type of chip that allows wall power to power the system until it is unplugged, in which case the battery steps in...ANY IDEAS?
totally agree -- basically, I am actuating several small pieces of Shape Memory Alloy -- the current needed to contract the wire I am using is 660mA -- DYNALLOY, Inc. | Shape Memory Alloy Actuator Wire Manufacturer (it's resistance is approx .74 ohms/in). I need to actuate at least 150 1" pieces of the muscle wire at the same time for the project -- wouldn't that need approx 100a of current??
I can't -- reason is that they all need to be independently controllable, with the option of them all actuating at the same time...I can actuate them each one sec. apart, but it really doesn't end up looking correct...